HK1164656A1 - Apparatus and method for self-stabilized rollable luggage assembly - Google Patents

Abstract

A luggage assembly includes a first piece of luggage and a second piece of luggage. An attachment member couples the second piece of luggage to the first piece of luggage so that the first and second pieces of luggage are self-stabilized while upright and inclined, and while in motion and while stationary.

Description

Apparatus and method for self-stabilizing rollable luggage assembly

Background

Some conventional pieces of luggage, such as carry bags and rolling sailbags, may have rollers on the bottom to make it easier for the traveler to transport the bags. However, travelers often need to transport two or more wheeled luggage simultaneously. If a traveler needs to transport more than two wheeled luggage, two hands are typically required. Thus, when transporting two or more large pieces of luggage, a traveler may find it difficult or impossible to do other things, such as answering a cellular telephone call, withdrawing cash or keys from a pocket or purse, holding a child's hand, etc.

Furthermore, in many situations, travelers may find it difficult to handle multiple pieces of luggage simultaneously. For example, it can be difficult to transport two large pieces up and down stairs or escalators safely or to transport two pieces through a narrow exit. Such manipulations can be particularly difficult when the traveler is small and one or both of the pieces of luggage are large and heavy. These kinds of difficulties can be multiplied when more than two pieces need to be transported.

Drawings

Features and advantages of the present invention will become apparent from the appended claims, the following detailed description of one or more example embodiments, and the corresponding figures, in which:

FIG. 1 shows an embodiment of a self-stabilizing, reliable luggage assembly;

fig. 2 depicts a perspective view of a piece of luggage called a tote bag.

Figure 3 shows a perspective view of a piece of luggage called a rolling sailcloth bag.

Fig. 4 depicts a perspective view of an item of luggage known as a shoulder bag.

Fig. 5-8 show side views of the components depicted in fig. 2-4 illustrating an embodiment of a method for forming a luggage assembly or luggage string according to an example embodiment of the invention.

Fig. 9 depicts a top view of the carry bag and rolling sailcloth bag from fig. 7.

Fig. 10 depicts a back view of a carrying bag and a front view of a rolling sailcloth bag according to another embodiment of the present invention.

Fig. 11-13 show side views of the tote bag and rolling sailcloth bag of fig. 10 in different stages of another exemplary embodiment of a method for forming a luggage string.

Fig. 14-17 show side views of another embodiment of a tote bag and rolling sailcloth bag in different stages of another method for forming a luggage string.

Fig. 18 shows a top view of the tote bag in fig. 17 coupled to a rolling sailcloth bag.

Figure 19 depicts an embodiment of a skewed luggage assembly including two suitcases and a shoulder bag.

Figure 20 depicts an embodiment of a luggage assembly in an upright position.

Figure 21A shows a top view of an embodiment of a stabilizer that may be used in the luggage assembly of figures 19 and 20.

Fig. 21B and 21C show respective top and side views of another embodiment of a stabilizer that may be used in the luggage assembly of fig. 19 and 20.

FIG. 22 shows a top view of the stabilizer of FIG. 21A coupling a pair of suitcases.

Fig. 23 shows another embodiment of a stabilizer.

FIG. 24 shows a top view of the stabilizer of FIG. 23 coupling a pair of suitcases.

FIG. 25 depicts a perspective view of an embodiment of a piece of luggage called a suitcase.

Fig. 26-29 depict embodiments of methods for forming the luggage assembly of fig. 19.

FIG. 30 is an embodiment of a stabilizer built into or stored in a pocket of a suitcase.

Figure 31 shows another embodiment of a stabilizer for a luggage assembly.

Figure 32 shows another embodiment of a stabilizer for a luggage assembly.

Detailed Description

Fig. 1 depicts an example embodiment of such a luggage assembly 100, including a tote bag 102 and a third bag 106 connected to a trailing bag 104. Further, the bags 102, 104, 106 are connected in a manner that allows most of the weight of the assembly 100 to rest on the wheels of the tote bag 102 and trailing bag 104. The assembly 100 is self-stabilizing when in motion and when stationary, and in particular, the traveler need not hold the handle 236 to hold the assembly 100 upright or in an inclined position whether or not the assembly 100 is in motion. These and other characteristics of the luggage assembly 100 enable superior stability and maneuverability. Additional details regarding the components and steps for forming the reliable luggage assembly 100, as well as various operating characteristics of the luggage assembly 100, are provided below.

Fig. 2 depicts a perspective view of an embodiment of a piece of luggage called a tote bag 102. As illustrated, the tote bag 102 has a front 224, a back 222, a top 226, a bottom 228, a left side 230, and a right side 232. As described in more detail below, in some embodiments, the tote bag 102 serves as the basis for a bag assembly that can be easily transported, handled, and parked.

For purposes of the present invention, the tote bag 102 may be referred to as the first bag, the primary bag, or the leading bag 102. In one embodiment, the dimensions of first pocket 102 are about 23 inches high, 12 inches wide, and 10 inches deep. In other embodiments, other types and/or sizes of bags may be used as the first or base bag.

In the embodiment of fig. 2, the top of first bag 102 features a soft handle 234. The left side 230 may also feature a soft handle. The first bag 102 also features a substantially rigid yet extensible handle 236 that includes two extendable rigid vertical members 240 and a substantially rigid gripping member 238 that spans across the top of the vertical members 240. In the embodiment of fig. 1, handle 236 is located at the rear of bag 102 and is longitudinally centered between the left and right sides.

The first bag 102 may also have a pair of wheels 242, one of which is seated at the rear left corner of the bottom of the bag 102 and the other of which is seated at the rear right corner of the bottom of the bag 102. One or more feet 244 may also be provided at or near the front edge of the bottom of first bag 102 to provide stability and prevent movement when first bag 102 is parked in the vertical position, with the weight resting on feet 244 and wheels 242.

Fig. 3 depicts a perspective view of an embodiment of a piece of luggage called a rolling sailcloth bag 104. As illustrated, the rolling sailcloth bag 104 has a front 304, a rear 302, a top 306, a bottom 308, a left side 310, and a right side 312.

In some embodiments, a rolling sailcloth bag 104 is connected to the first bag 102 to form a luggage assembly 100 that can be easily transported, handled, and parked. Thus, for the purposes of the present invention, the rolling sailcloth bag 104 may be referred to as a second or trailing bag 104. In at least one embodiment, the trailing pocket 104 is larger than the leading pocket. In one embodiment, the dimensions of the second pocket 104 are about 28.5 inches high, 13.5 inches wide, and 11.5 inches deep. In another embodiment, the dimensions of the second pocket are about 33 inches high, 16 inches wide and 13 inches deep. In another embodiment, the height of the second pocket may be greater than 47 inches. In other embodiments, other types and/or sizes of bags may be used as the second or trailing bag 104. For example, the trailing bag 104 may be the same size or smaller than the leading bag 102, with the attachment members 604 (fig. 6) sized accordingly (e.g., longer attachment straps) to provide suitable weight distribution to stabilize the bags 102, 104.

In the embodiment of fig. 3, the top of the second bag 104 features a soft handle 314. The second bag 104 may also feature a rigid extendable handle 316 along with a pair of wheels 318 at the rear corner of the bottom of the bag and one or more feet 320 at or near the front edge of the bottom. The feet 320 may provide stability and prevent movement in parking the second pocket 104 in the vertical position by virtue of the feet 320 and wheels 318.

Fig. 4 depicts a perspective view of an embodiment of a piece of luggage called a shoulder bag 106. As illustrated, the shoulder bag 106 has a back 402, a front 404, and a strap 406. As described in more detail below, in one embodiment, shoulder bag 106 may be connected to first bag 102 along with second bag 104 to form a bag assembly that may be easily transported, handled, and parked. Thus, for the purposes of the present invention, the shoulder bag 106 may be referred to as the top or third bag 106.

In the embodiment of fig. 4, strap 406 is sized to snugly receive handle 236. Thus, strap 406 may be slid down handle 236 until third bag 106 rests on top of first bag 102, and thereafter strap 406 will prevent top bag 106 from being dislodged. In other embodiments, other types and/or sizes of pouches can be used as the third pouch 106 (e.g., laptop pouch, handbag, tote bag, tool pouch). Typically, the third bag 106 may be sized to meet airline hand bag requirements. For example, the third pocket 106 may be small enough to fit under a typical airline seat. In other embodiments, the third pocket 106 may be omitted.

Fig. 5-8 depict side views of the components depicted in fig. 2-4. Additionally, fig. 5-8 illustrate an embodiment of a method for forming the luggage assembly 100 (fig. 1).

Fig. 5 depicts a first bag 102, a second bag 104, and a third bag 106, each resting in an upright position on the floor, as they may be seated, for example, after a traveler has retrieved the second bag 104 from the luggage carousel. The process for attaching the bags together in a manner to form a stable luggage assembly 100 may begin with the bag in this position. The traveler may then separate handle 314 into two separate pieces.

As shown in fig. 6, the handle 314 may include a main handle strap 602 and a reinforced handle strap 604. When only the second pouch 104 is used, a sleeve with snaps or any other temporary connection means may be used to keep the primary handle strap 602 connected with the reinforced handle strap 604. However, when desired, the traveler may release the temporary connecting member to allow the traveler to separate reinforced handle strap 604 from main handle strap 602, as shown by arrow 606 in fig. 6.

In one embodiment, the two ends of the primary handle strap 602 are connected to the top of the second bag 104 at two points at or near the left and right edges of the top 306 of the second bag 104, while the two ends of the reinforcing handle strap 604 are connected to the upper portion 322 (e.g., the upper third) of the back of the second bag 104. For example, the two ends of the reinforced handle strap 604 may be connected at two points at or near the top edge of the rear portion 302. In one embodiment, the two attachment points for reinforcing handle strap 604 are about equal distances from the longitudinal center of second bag 104 and are located at least as far apart from each other as vertical member 240 of handle 236 of first bag 102. Other embodiments may use other configurations of uprights, handles, and/or straps.

Once the traveler has separated reinforced handle strap 604 from main handle strap 602, the traveler lifts reinforced handle strap 604 over grip 238 of handle 236, as indicated by arrow 608. The extendable handle 236 may be retracted to make this easier.

As shown in fig. 7, the traveler then slides reinforcing handle strap 604 down handle 236 and/or extends handle 236 up through reinforcing handle strap 604 to couple second bag 104 to first bag 102. Accordingly, reinforcing handle strap 604 and handle 236 may serve as and may be referred to as attachment members. Similarly, reinforcing handle strap 604 may also be referred to as attachment strap 604.

Fig. 9 depicts a top view of the configuration of the first and second pouches 102, 104 shown in fig. 7, wherein the second pouch 104 is attached to the first pouch 102, but without the third pouch 10. As illustrated, once the traveler has attached second bag 104 to first bag 102 with reinforcing handle strap 604, reinforcing handle strap 604 may have three sections, a first section 604A and a third section 604C (each of which extends from second bag 104 around handle 236) and an intermediate second section 604B (which spans handle 236). In one embodiment, first section 604A and third section 604C are about the same length 902, and the length 902 is about twice the length 904 of the section spanning handle 236. For example, the segments 604A and 604C may be about 10 inches long, and the segment 604B may be about 6 inches long. The distance between the attachment points on second pocket 104 for sections 604A and 604C may also be about 6 inches. The relatively wide middle section, in combination with the relatively wide attachment point on the second pocket 104, may provide increased stability to the luggage assembly 100 by helping to prevent the left or right side of the second pocket 104 from lifting away from the first pocket 102. Other dimensions and/or ratios may be used in other embodiments. For example, the rigid handle 236 on the leading bag 102 can be wider than 6 inches or less than 6 inches (e.g., a single post), and the attachment strap can be correspondingly longer or shorter. The secure luggage assembly 100 may thus use an attachment strap 604 that is proportional in length to the distance from the trailing bag 104 and that surrounds the handle 236 to prevent the trailing bag 104 from sliding too far down the leading bag 102.

Referring again to fig. 7, the traveler may also attach the third bag 106 to the assembly 100 by sliding the strap 406 down the handle 236 to rest the third bag 106 on top of the first bag 102 and the reinforced handle strap 604. The added weight of the third pocket 106 on the reinforced handle strap 604 may provide increased stability to the luggage assembly 100. The added weight of the third pocket 106 may also contribute to the overall stability of the luggage assembly 100, depending on the weight and angle of the other pockets. For example, if the trailing bag 104 is very heavy and the leading bag 102 is very light, the third bag 106 on top of the leading bag 102 may provide a beneficial downward force in front of the wheels 242 of the first bag 102 to prevent the first bag 102 from returning to an upright position.

Furthermore, as indicated above, many different kinds of items may be used as the third pocket 106. For example, a case or package may be placed on top of the first bag 102 to serve as the third bag 106, and the rollable luggage assembly 100 may also serve as a self-stabilizing cart for transporting the case or package. The third bag 106 may or may not contain a strap 406.

When handle 236 has been extended upwardly through reinforced handle strap 604, the assembly may generally assume the configuration shown in fig. 7, with first bag 102 in an upright position and second bag 104 leaning against first bag 102. In this configuration, a majority of the weight of the second bag 104 may rest behind the wheels 318. Gravity may thus pull stiffening handle strap 604 securely against the front of upright member 240 and the top of first bag 102. Reinforcing handle strap 604 is configured to maintain second bag 104 in contact with at least a portion of first bag 102 and may prevent second bag 104 from sliding down the front of first bag 102 or moving away from the front of first bag 102 while luggage assembly 100 is in motion. In one embodiment, reinforcing handle strap 604 maintains the top back edge of second bag 104 substantially adjacent to the top back edge of first bag 102. In other embodiments, the attachment member may allow the second bag 104 to slide a short distance further down the back of the first bag 102. However, it is generally preferred to keep the top of the second bag 104 within a certain distance (e.g., about 2 inches) of the top of the first bag 102 to provide a weight distribution advantage, such as the weight distribution advantage described below.

Referring again to fig. 8, the luggage assembly 100 is depicted in an inclined configuration. Specifically, (a) reinforcing handle strap 604 of second bag 104 wraps around handle 236 of first bag 102, (b) third bag 106 rests on top of first bag 102 and reinforcing handle strap 604, with strap 406 receiving handle 236, (c) both first bag 102 and second bag 104 are tilted at an angle by virtue of their wheels 242, 318, with legs 244, 320 raised from the floor, and (d) at least a portion of the rear of second bag 104 is in contact with at least a portion of the front of first bag 102. In embodiments that do not include the third bag 106, the assembly 100 can be considered fully assembled when in the aforementioned configuration (but without the third bag 106).

Reinforcing handle strap 604 is dimensioned to engage handle 236 when second bag 104 is seated next to first bag 102. The reinforced handle strap 604 is typically flexible but substantially inelastic, but the strap 604 may also have some elasticity. Thus, when first bag 102 is tilted forward from an upright position to the tilted position shown in fig. 8, reinforcing handle strap 604 substantially prevents second bag 104 from sliding down the front of first bag 102 or moving away from first bag 102 when assembly 100 is in motion and at rest. For example, in the embodiment of fig. 8, the relative position of the tops of the first and second pouches 102, 104 can change by less than 5% of the height of the first pouch 102 (e.g., about 1 inch). In other embodiments, depending on the size and weight of the trailing bag 104, the attachment member 604 may enable greater or lesser changes in position to maintain balance.

When the first and second pockets 102, 104 are skewed or tilted as shown in fig. 8, most of the weight of the second pocket 104 is in front of the wheels 318. Thus, the weight of the second bag 104 keeps the second bag 104 firmly pressed against the first bag 102 and prevents the second bag 104 from accidentally returning to the upright position. Moreover, a sufficient portion of the weight of assembly 100 typically rests in front of wheels 242 to prevent first bag 102 from returning to the upright position. As described in more detail below, this tendency for the bag to remain in a forward tilted or skewed position may be referred to as internal trim stability or self-stability.

In one embodiment, the contact area where the front 222 of the first bag 102 contacts the back 302 of the second bag 104 covers greater than 75% of the front 224 of the first bag 102 and greater than 60% of the back 302 of the second bag 104. This contact area helps to keep second bag 104 from shifting relative to first bag 102.

Thus, when the bags 102, 104 are substantially full and configured in the position depicted in fig. 8, the luggage assembly 100 tends to remain in that position with some of the weight of the assembly supported by the wheels 242 and the remainder supported by the wheels 318. Thus, once the assembly has been completed, the traveler need not expend any effort to hold the assembly together and keep it properly positioned. The traveler can also easily move the assembly 100 with a single hand. Moreover, whether stationary or in motion and whether skewed or not, the assembly 100 is completely self-stabilizing and can continue its established process without assistance or other external support.

Additionally, in some embodiments, much of the weight of the assembly 100 may rest in front of the wheels 242 when in the completed and ready to roll position depicted in fig. 8. For example, depending on the weight of each bag and the distribution of the weight in each bag, about 20-40% of the weight of the assembly 100 may rest in front of the wheels 242 of the first bag 102.

In addition, handle 236 provides significant leverage and reinforcing handle strap 604 prevents second bag 104 from being displaced from its position on first bag 102. Thus, it is generally easy to press down on the handle 236 and lift the wheel 318 completely off the ground. For example, a 100 pound traveler can easily perform this with one hand on a luggage assembly 100 weighing over 100 pounds if the weight is well distributed within the bag. In addition, the further the traveler pushes down on handle 236, the more weight is displaced in front of wheels 242. The traveler can thus easily balance the entire assembly 100 on the wheels 242, similar to maneuvering a baby stroller up steps, escalator, etc. Thus, with the assembly 100 balanced on the wheels 242 of the leading bag 102, the traveler can find it very easy to maneuver the entire assembly 100 around turns, steps up, escalators up and down, and through various other obstacles that would be more difficult to handle with two or more pieces of conventional luggage (one hand, one piece). Further, since the assembly 100 is no wider than the widest bag in the assembly 100, it may be easy to maneuver the assembly 100 through crowded or narrow exits or passageways.

When the traveler does not want the assembly 100 to move, the traveler can simply return the first bag 102 to the upright position so that the feet 244 contact the ground and carry some of the weight of the assembly 100.

Furthermore, as indicated above, the manner in which reinforced handle strap 604 connects the first and second bags together helps keep the left and right sides of second bag 104 lifted or moved away from first bag 102 when assembly 100 is in a secure configuration. In other words, reinforced handle strap 604 prevents second bag 104 from spinning or rotating along its longitudinal axis relative to first bag 102. For example, in the embodiment of fig. 8, reinforcing handle strap 604 prevents second bag 104 from rolling more than 5 degrees relative to first bag 102 when first bag 102 and second bag 104 are substantially filled. Another embodiment may allow the second pocket to roll up to 30 degrees relative to the first pocket. This type of stability of the assembly 100 may be referred to as internal roll stability. In contrast, the resistance to rotation of the entire assembly 100 about its longitudinal axis may be determined primarily by the distance between the wheels on the bottom of the first pocket 102, and this type of stability may be referred to as external roll stability.

The assembly 100 also exhibits good internal and external pitch stability. For the purposes of the present invention, internal trim stability refers to the tendency of the two pockets 102, 104 to maintain the same angle of inclination relative to each other when the first and second pockets 102, 104 are in a secure configuration. In other words, the attachment features, weight distribution, and action resist other features that could otherwise cause one bag to deflect up or down relative to the other bag (even while the traveler is gripping handle 236 or any other portion of first bag 102 or second bag 104). Good internal pitch stability is one of the attributes that makes it easy to lift the wheel 318 by pressing down on the handle 236. External pitch stability refers to the tendency of the complete assembly 100 to hold all four wheels 242, 318 on the ground.

Furthermore, the assembly 100 exhibits good internal and external deflection stability. For the purposes of the present invention, internal deflection stability refers to the tendency of the first and second pouches 102, 104 to maintain the same relative alignment of their longitudinal axes. In other words, considering the contact overlay 802 between the first and second pouches 102, 104, the front portion 304 of the second pouch 104 does not tend to rotate relative to the rear portion 222 of the first pouch 102. External yaw stability refers to the tendency of the assembly 100 to track straight as it is rolling against all four wheels. The characteristics of pitch, roll, and yaw stability exhibited by the assembly 100 contribute to the assembly 100 being self-stabilizing both when in motion and when at rest, regardless of whether the bags 102, 104 are skewed. Note that the components of assembly 100 may be coupled using alternative attachment means, such as one or more Velcro (Velcro) straps, straps with snaps or zippers, and straps on trailing bag 104 that disconnect and reconnect with corresponding straps on leading bag 102. The straps may or may not be adjustable to provide suitable balancing/leverage for bags filled with different weights, and which may serve as reinforcing straps when not used to form the luggage assembly 100.

Fig. 10 depicts a back view of another embodiment of a tote bag 1040 and a front view of another embodiment of a rolling sailcloth bag 1050. The tote bag 1040 may also be referred to as a leading bag or first bag 1040. The rolling sailcloth bag 1050 may also be referred to as a tow bag or second bag 1050. As shown, mating strap 1042 is attached to the front of first bag 1040, and corresponding mating hook 1052 is attached to the rear of second bag 1050. The mating strap 1042 may be made of fabric, leather, plastic, or any other suitable material. Mating hook 1052 may be made of metal, plastic, or any other suitable material.

Mating strap 1042 is sized to receive mating hook 1052. For example, the top 1054 of mating hook 1052 may be approximately 4 inches wide, and the opening 1044 between mating strap 1042 and the rear of first bag 1040 may be approximately the same width as top 1054. The relatively wide mating hook 1052, when engaged by mating strap 1042, may tend to prevent the left and right sides of second bag 1050 from moving or lifting away from first bag 1040. The openings 1044 may also be referred to as mating slots 1044. Other dimensions may be used in other embodiments.

Fig. 11 depicts a side view of bags 1040 and 1050 in a first position. To begin connecting the first and second pockets 1040, 1050 into a stable luggage assembly 1000 (fig. 12 and 13) or luggage string, the traveler may deflect the first and second pockets 1040, 1050 slightly rearwardly, as shown. The traveler can then insert the tip 1056 of mating hook 1052 into mating slot 1044.

Fig. 12 depicts a side view of bags 1040 and 1050 upright with luggage assembly 1000. As depicted, mating hook 1052 may hold first and second bags 1040, 1050 together when returned to an upright position. Thus, mating hook 1052 and mating strap 1042 may be referred to as attachment members.

Fig. 13 depicts a side view of bags 1040 and 1050 skewed with luggage assembly 1000. As first bag 1040 is skewed away from second bag 1050, mating hook 1052 slides down into mating slot 1044 until inside top 1054 of mating hook 1052 engages mating strap 1042. In a skewed orientation, at least some weight of second bag 1050 may rest in front of wheels 1058 of second bag 1050, such that gravity presses the rear of second bag 1050 against the front of first bag 1040. Thus, similar to the embodiment of fig. 8, the luggage assembly 1000 may be self-stabilizing in this configuration and may be easily rolled with one hand. The handle of first bag 1040 may also be used to lift wheel 1058 off the ground, thereby allowing for good maneuverability, generally as described above with respect to fig. 2-9.

Fig. 14-17 show side views of another embodiment of a tote bag 1402 and a rolling sailcloth bag 1404 in different stages of another method for forming a luggage assembly 1400. In the illustrated embodiment, the tote bag 1402 and the rolling sailcloth bag 1404 include two or more sets of respective straps 1406, 1410 with releasable connectors 1408, 1412 coupled at intermediate portions along the straps 1406, 1410. The connectors 1408, 1412 are configured to be released and re-coupled to receiving connector portions on the same bag or on adjacent bags. That is, one end of straps 1406, 1410 is attached to the top rear portion of bags 1402, 1404, and the middle end of straps 1406, 1410 terminates with a portion of connectors 1408, 1412. The other end of straps 1406, 1410 are attached to the front top of bags 1402, 1404 and the other intermediate end of straps 1406, 1410 terminate with another portion of connectors 1408, 1412. When portions of connectors 1408, 1412 are coupled, straps 1406, 1410 may span across the top of respective bags 1402, 1404 from front to back. Additionally, portions of the connector 1412 on the canvas bag 1404 may be coupled to compatible portions of the connector 1408 on the handbag 1402 and vice versa. Straps 1406, 1410 and connectors 1408, 1412 may also be collectively referred to as attachment members.

Fig. 15 shows connectors 1408, 1412 decoupled, thereby releasing the four intermediate ends of straps 1406, 1410. In fig. 16, the portion of connector 1412 attached to strap 1410 on the top rear of the canvas bag 1404 is coupled to the portion of connector 1408 attached to strap 1406 on the top rear of the handbag 1402. The length of straps 1406, 1410 may be adjusted to pull the tote bag 1402 and the sailcloth bag 1404 closer together once the connector 1408/1412 is coupled.

Fig. 17 shows a side view of the luggage assembly 1400 with the bags 1402, 1404 in a skewed position. With the connectors 1408, 1412 coupled, the bag 1404 deflects in the direction of the bag 1402 as the bag 1402 is skewed. In this orientation, at least some of the weight of the bag 1404 may rest on top of and/or in front of the wheels 1414 of the bag 1402, such that gravity presses the back of the bag 1404 against the front of the bag 1402. Thus, similar to the embodiment of fig. 8, the luggage assembly 1400 may be self-stabilizing in this configuration and may be easily rolled with one hand. The handle of the first bag 1402 may also be used to lift the wheels 1416 off the ground, thereby allowing good maneuverability, substantially as described above with respect to fig. 2-9.

Fig. 19 and 20 depict an example embodiment of a luggage assembly 1900 that includes a suitcase 1902 connected to a towed suitcase 1904 and a shoulder bag 1906. Furthermore, suitcases 1902 and 1904 are connected with stabilizer 1908 in a manner that allows all or most of the weight of assembly 1900 to rest on the wheels of suitcase 1902 and towed suitcase 1904. Stabilizer 1908 enables assembly 1900 to be self-stabilizing when in motion and when stationary, and in particular, the traveler does not need to hold handle 1910 of assembly 1900 to keep it in an inclined position as shown in fig. 19 or upright as shown in fig. 20, regardless of whether assembly 1900 is in motion or stationary. These and other characteristics of luggage assembly 1900 achieve superior stability and maneuverability. Additional details regarding the components and steps used to form the rollable luggage assembly 1900, as well as various operating characteristics of the stabilizer 1908 and the luggage assembly 1900, are provided below.

Referring to fig. 19 and 21A, fig. 21A shows an embodiment of a stabilizer 1908 that includes a first connector or attachment member 2102 that is configured to fit under a handle 1912 on a first suitcase. Handle 1912 is generally sized to fit a human hand and attachment member 2102 may be further configured to be as wide as at least half of the length of handle 1912 to increase the stability of suitcase 1904 when coupled to suitcase 1902 with stabilizer 1908. The stabilizer 1908 also includes an extension portion 2104 (also referred to as a central body) coupled to the attachment member 2102. The length of the extended portion 2104 may be configured to extend between the first suitcase 1902 and the second suitcase 1904 and to hold the first suitcase 1902 adjacent to the second suitcase 1904 while the first and second suitcases 1902, 1904 are upright, askew, moving, and stationary.

Extension portion 2104 can include one or more engagement structures, such as slots 2108A-2108D along the length of extension portion 2104. The embodiment of the stabilizer 1908 shown in fig. 21A includes four (4) rectangular slots 2108A-2108D within the extension portion 2104, however, any suitable number and shape of slots 2108A-2108D may be used. Once the attachment member 2102 is pulled under the handle 1912 and through the handle 1912, the end of the extension portion 2104 coupled to the attachment member 2102 may be folded over the handle 1912 to couple or engage the attachment member 2102 to one of the slots 2108.

The attachment member 2102 may include an end 2106 that is L-shaped, cotter-shaped, U-shaped, or another suitable shape that fits under a handle 1912 on the first suitcase 1904 and engages one of the slots 2108. As shown in fig. 19 and 20, attachment member 2102 can include a substantially planar portion between end 2106 and extension portion 2104 to allow attachment member 2102 to fit between handle 1912 and suitcase 1904. Other suitable configurations of the attachment member 2102 can be used, such as velcro, snaps, and/or one or more snaps, among others.

The extension 2104 can have any other suitable size and shape. The extension 2104 is typically made using a non-elastic material, but the material can be rigid/semi-rigid or flexible for easy storage. The material may also be elastic, having a low elastic modulus. For example, in some embodiments, the extension portion 2104 is fabricated from ballistic nylon and the attachment member 2102 is fabricated from metal or plastic. In other embodiments, the extension 2104 is made of plastic. Additionally, the edges of the slot 2108 may be reinforced with a rigid material, such as plastic or metal, to increase the stability of the luggage assembly 1900. Other suitable materials and configurations can be used for the extension 2104 and the attachment member 2102.

In one embodiment, the extension portion 2104 is about 16 inches long and 8 inches wide. Slots 2108 are approximately 2.5 inches long by 7.5 inches wide with 1/2 inches to 1 inch dividers or edges 2110 between slots 2108. The attachment member is about 2.5 inches long and 2 inches wide. Other suitable dimensions may be used based on handles 1910, 1912 on suitcases 1902, 1904.

Fig. 21B and 21C show respective top and side views of another embodiment of a stabilizer 1908 that includes a first connector or attachment member 2102 that is configured to fit under a handle 1912 (fig. 19) on a suitcase. The handle 1912 is generally sized to fit a human hand and the attachment member 2102 may be any suitable size. In some embodiments, attachment member 2102 is configured to be as wide as at least half of the length of handle 1912 to increase the stability of suitcase 1904 when coupled to suitcase 1902 with stabilizer 1908. The stabilizer 1908 also includes an extension portion 2104 (also referred to as a central body) coupled to the attachment member 2102. The length of the extended portion 2104 may be configured to extend between the first suitcase 1902 and the second suitcase 1904 and to hold the first suitcase 1902 adjacent to the second suitcase 1904 while the first and second suitcases 1902, 1904 are upright, askew, moving, and stationary. The extension portion 2104 is tapered at one end slightly larger than the width of the attachment member 2102, wherein the one end of the attachment member 2102 is fastened to the extension portion 2104. In the illustrated embodiment, one end 2105 of the attachment member 2102 wraps over an end of the tapered section of the extension portion 2104 and is fastened to the extension portion 2104 with a rivet. Other suitable fasteners and configurations for coupling or fastening the attachment member 2102 to the extension portion 2104 may be used.

The other end 2106 of attachment member 2102 may be L-shaped, cotter-shaped, U-shaped, or another suitable shape that fits under handle 1912 on first suitcase 1904 and engages the edge of one of dividers 2110A-2110D between slots 2108A-2108D. As shown in fig. 19 and 20, attachment member 2102 can include a substantially planar portion between end 2106 and extension portion 2104 to allow attachment member 2102 to fit between handle 1912 and suitcase 1904. Other suitable configurations of the attachment member 2102 may be used, such as velcro, snaps, and/or one or more straps, among others.

Extension portion 2104 can include one or more engagement structures, such as slots 2108A-2108D along the length of extension portion 2104. The embodiment of the stabilizer 1908 shown in fig. 21B includes a combination of one trapezoidal slot 2108A and three (3) rectangular slots 2108B-2108D in the extension portion 2104, however, any suitable number and shape of slots 2108A-2108D may be used. The extension 2104 can also have any other suitable size and shape. The extension 2104 is typically made using a non-elastic material, but the material can be rigid/semi-rigid or flexible for easy storage. The material may also be elastic, having a low elastic modulus. For example, in some embodiments, the extension portion 2104 is fabricated from ballistic nylon and the attachment member 2102 is fabricated from metal or plastic. In other embodiments, the extension 2104 is made of plastic. Additionally, the edges of the slot 2108 may be reinforced with a rigid material, such as plastic or metal, to increase the stability of the luggage assembly 1900. Other suitable materials and configurations can be used for the extension 2104 and the attachment member 2102.

In one embodiment, extension portion 2104 is about 16 inches long and 8 inches wide at one end, and tapers from 8 inches at divider 2108B to about 2.5 inches to 3 inches at the end of extension portion 2104 coupled to attachment member 2102. Slots 2108B-2108D are about 2.5 inches long by 7 inches wide, and slot 2108A has a trapezoidal shape that is about 2.5 inches long and tapers from about 7 inches wide at divider 2108B to 6 inches at divider 2108A. Another tapered slot 2112 may be included between divider 2110A and the end of extension portion 2104 at attachment member 2102. The divider 2110 may be 1/2 inches to 1 inch wide. In some embodiments, attachment member 2102 is approximately 2.5 inches long and 2 inches wide. Other suitable dimensions for extension member 2104, attachment member 2102, slot 2108, and divider 2110 may be used based on the size of handles 1910, 1912 on suitcases 1902, 1904.

Referring to fig. 21A-21C and 22, fig. 22 shows a top view of stabilizer 1908 coupling suitcases 1902, 1904 to one another. One of slots 2108A-2108D in stabilizer 1908 will typically be the correct distance to engage handle 1910 on second suitcase 1902 when extension portion 2104 (also referred to as the central body) is folded over handle 1912 and attachment member 2102 is engaged in one of slots 2108. In the example shown in fig. 22, slot 2108D engages handle 1910 on suitcase 1902 and attachment member 2102 engages slot 2108B. The slots 2108A-2108D used will generally depend on the depth of the suitcases 1902 and 1904 and the size of the slot 2108. For example, thin suitcases 1902, 1904 can result in attachment member 2102 engaging slot 2108C or 2108D, while deep suitcases 1902, 1904 can result in attachment member 2102 engaging slot 2108A or 2108B. Generally, slots 2108 are typically used that position suitcases 1902, 1904 in contact with each other or with the smallest possible clearance with each other when in an upright and tilted position and when in motion and stationary and when wheels 1918, 1920 on suitcases 1902, 1904 remain on the ground. Wheels 1918, 1920 may be turning wheels, one-way wheels, or other suitable devices that allow suitcases 1902, 1904 to roll along.

Handle 1910 on second suitcase 1902 is typically sized to fit a person's hand and may include a retractable portion 1914 that allows handle 1910 to be stored within or along the back side of suitcase 1902 and approximately flush with the top of suitcase 1902. Handle 1910 may be placed in a storage position and handle 1910 raised after appropriate slot 2108 has been positioned over handle 1910.

Referring to fig. 23 and 24, another embodiment of stabilizer 2300 is shown including a first connector or attachment member 2102 engaged in handle 1912 on suitcase 1904 and a second attachment member 2302 engaged in handle 1916 on suitcase 1902. Handles 1912, 1916 are generally sized to accommodate a human hand and attachment members 2102, 2302 may be further configured to engage at least half of the length of handles 1912, 1916 to increase the stability of suitcase 1904 when coupled to suitcase 1902 with stabilizer 2300. The stabilizer 2300 may also include an adjustable extension portion 2304 coupled between the attachment members 2102, 2302. Extension 2304 comprises two pieces of material coupled with a buckle or other suitable fastener. Stabilizer 2300 is configured to extend between suitcases 1902, 1904 and hold suitcase 1902 adjacent to suitcase 1904 when suitcases 1902, 1904 are upright, tilted, moving, and stationary.

Attachment member 2302 can include end 2306 that is L-shaped, U-shaped, cotter pin-shaped, or another suitable shape that has at least one edge that engages a handle 1912 or 1916. As shown in fig. 24, attachment members 2102, 2302 can include a substantially planar portion between ends 2106, 2306 and extension 2304 to allow attachment members 2102, 2302 to fit under handles 1912, 1916 on respective suitcases 1902, 1904. Other suitable configurations of attachment members 2102, 2302 may be used, such as VELCROSnaps and/or one or more straps, among others. Although the illustrated embodiment of the extension portion 2304 has a rectangular shape, the extension portion 2304 can have any suitable shape, such as oval, square, or circular.

Figure 25 depicts a perspective view of an embodiment of an article of luggage called suitcase 1902. As illustrated, suitcase 1902 has a front 2502, a back 2504, a top 2506, a bottom 2508, a left side 2510, and a right side 2512. As described in more detail below, in some embodiments, two or more suitcases 1902, 1904 (fig. 19) are coupled by a stabilizer 1908 to form a luggage assembly 1900 that can be easily transported, manipulated, and parked. For purposes of the present invention, suitcases 1902, 1904 may be referred to as a suitcase or an item of luggage.

In the embodiment of fig. 25, the top of suitcase 1902 features a soft handle 1916. The left side 2510 may also feature a soft handle. First suitcase 1902 also features a substantially rigid yet extendable handle 1910 that includes two extendable rigid vertical members 1914 and a substantially rigid gripping member 2520 that spans the top of vertical members 1914. In the embodiment of fig. 19, handle 1910 is located at the rear of suitcase 1902 and is longitudinally centered between the left and right sides. In other embodiments, the handle 1910 is attached to a single rigid retractable vertical member 1914 instead of two retractable vertical members 1914.

Suitcase 1902 may also have a pair of rigid or rotating wheels 1920, with one wheel sitting at the rear left corner of the bottom of suitcase 1902 and the other wheel sitting at the rear right corner of the bottom of suitcase 1902. One or more feet 2524 may also be provided at or near the front edge of the bottom of suitcase 1902 to provide stability and prevent movement when suitcase 1902 is parked in an upright position, with the weight resting on feet 2524 and wheels 1920. Alternatively, swivel wheels may be provided at the rear and front of the suitcase.

To balance luggage assembly 1900, suitcase 1904 is generally the same size, larger, and/or equal to or larger in weight than suitcase 1902. Stabilizer 1908 may be adjusted as needed to balance luggage assembly 1900 in the upright and tilted positions, with wheels 1918, 1920 of both suitcases 1902, 1904 remaining on the ground. If stabilizer 1908 is too tight, wheels 1920 of suitcase 1904 may lift off the ground and cause luggage assembly 1900 to become unstable. If stabilizer 1908 is too loose, it may be difficult to balance suitcases 1902, 1904 such that luggage assembly 1900 is self-stabilizing. Stabilizer 1908 provides a wide adjustment range to establish a center of gravity for suitcases of various sizes and weights that balances those suitcases in tilted and upright positions.

Fig. 26-29 depict side views of luggage pieces 1902, 1904 and embodiments of methods for forming luggage assembly 1900 (fig. 19). Note that instructions according to an embodiment of a method for forming the luggage assembly 1900 may be included in the packaging of the stabilizer 1908 or may be obtained via another source, such as a symbol showing where the stabilizer 1908 is sold from and/or a manufacturer website accessible via a computerized information network, such as the internet.

Fig. 26 depicts first suitcase 1902 and second suitcase 1904 resting vertically on the floor, as they might be seated, for example, after a traveler has retrieved second suitcase 1904 from a luggage carousel. The process for attaching the suitcases together in a manner that forms stable luggage assembly 1900 may begin with suitcases 1902, 1904 in this position. The back of suitcase 1904 is placed adjacent to the front of suitcase 1902. One of slots 2108 (fig. 21A) of stabilizer 1908 is placed on retractable handle 1910 of suitcase 1902.

Fig. 27 shows the loose end 2106 (fig. 21A) of stabilizer 1908 ready to be pulled through under handle 1912 on suitcase 1904, thus engaging handle 1912 on the top of suitcase 1904. Fig. 28 shows stabilizer 1908 being pulled taut through handle 1912, and fig. 29 shows stabilizer 1908 being folded over handle 1912 so that end 2106 (fig. 21A) of attachment member 2102 can engage an edge of one of slots 2108.

In other embodiments, the traveler may engage the handle 1910 on top of the first piece of luggage 1904 with one end 2106 (fig. 24) of the stabilizer 2300 (fig. 24) and engage the handle 1916 on top of the second piece of luggage 1902 with the other end 2306 of the stabilizer 2300.

When one of slots 2108 engages handle 1910 or handle 1916 engages attachment member 2302 (fig. 23), first suitcase 1902 may be in an upright position and second suitcase 1904 may be reclined on first suitcase 1902. In this configuration, most of the weight of second suitcase 1904 may rest behind wheels 1920. Gravity may thus pull stabilizer 1908, 2300 firmly against handles 1912 and 1910 or 1916.

Stabilizers 1908, 2300 are configured to hold second suitcase 1904 in contact with at least a portion of first suitcase 1902 and prevent second suitcase 1904 from sliding down the front of first suitcase 1902 or moving away from the front of first suitcase 1902 while luggage assembly 1900 is in motion. In some embodiments, stabilizers 1908, 2300 keep the top back edge of second suitcase 1904 substantially adjacent to the top back edge of first suitcase 1902. In other embodiments, the stabilizers 1908, 2300 may allow the second suitcase 1904 to slide a short distance further down the back of the first suitcase 1902. However, it is generally preferred to keep the top of second suitcase 1904 within a certain distance (e.g., about 2-4 inches) of the top of first suitcase 1902 to provide a weight distribution advantage, such as the weight distribution advantage described below.

When first suitcase 1902 and second suitcase 1904 are tilted or tilted as shown in FIG. 19, most of the weight of second suitcase 1904 is behind wheels 1920. Thus, the weight of second suitcase 1904 keeps second suitcase 1904 pressed firmly against first suitcase 1902, and prevents second suitcase 1904 from accidentally returning to the upright position. Moreover, a sufficient portion of the weight of assembly 1900 typically rests behind wheels 1920 to prevent suitcase 1902 from returning to an upright position. As described in more detail below, this tendency for the suitcase to remain in a forward tilted or skewed position may be referred to as internal trim stability or self-stability.

Thus, when suitcases 1902, 1904 are substantially filled and configured in the position depicted in fig. 19, luggage assembly 1900 tends to remain in that position with some of the weight of the assembly supported by wheels 1918 on suitcase 1902 and the remainder supported by wheels 1920 on suitcase 1904. Thus, once the assembly 1900 has been completed, the traveler need not expend any effort to hold the assembly together and keep it properly positioned. The traveler can also easily move assembly 1900 with a single hand. Moreover, whether stationary or in motion and whether skewed or not, the assembly 1900 is fully self-stabilizing and can continue its established process while in motion without assistance or other external support.

Additionally, in some embodiments, much of the weight of assembly 1900 may rest behind wheels 1920 when in the completed and ready to roll position depicted in fig. 19. For example, depending on the weight of each suitcase and the distribution of weight in each suitcase, about 20-40% of the weight of assembly 1900 may rest behind wheels 1920 of suitcase 1904.

In addition, the handle 1910 provides significant leverage and the stabilizers 1908, 2300 prevent the second suitcase 1904 from shifting from its position on the first suitcase 1902. Thus, it is generally easy to press down on handle 1910 and lift wheels 1920 completely off the ground. For example, if the weight is well distributed within the suitcase, a 1910 pound traveler can easily perform this with one hand on a luggage assembly 1900 weighing more than 1900 pounds. In addition, the further the traveler pushes down on handle 1910, the more weight is displaced behind wheels 1920. The traveler can thus easily balance the entire assembly 1900 on the wheels 1918, similar to maneuvering a baby stroller up steps, escalator, etc. Thus, with assembly 1900 balanced on wheels 1918 of leading suitcase 1902, the traveler can find it very easy to maneuver the entire assembly 1900 around turns, steps up, escalators up and down, and through various other obstacles that would be more difficult to handle with two or more pieces of conventional luggage (one hand, one piece). Furthermore, because assembly 1900 is no wider than the widest suitcase in assembly 1900, it may be easy to maneuver assembly 1900 through crowded or narrow exits or passageways. Alternatively, when suitcases 1902, 1904 include rotating wheels, downward pressure may not be required to maneuver luggage assembly 1900 in confined spaces.

When the traveler does not want assembly 1900 to move, the traveler can simply return first suitcase 1902 to an upright position such that legs 2524 contact the ground and carry some of the weight of assembly 1900.

Furthermore, as indicated above, the manner in which stabilizers 1908, 2300 connect first and second totes together helps keep the left and right sides of second tote 1904 lifted or moved away from first tote 1902 when assembly 1900 is in a reliable configuration. In other words, stabilizers 1908, 2300 prevent second suitcase 1904 from spinning or rotating along its longitudinal axis relative to first suitcase 1902. For example, in the embodiment of fig. 26, stabilizers 1908, 2300 prevent second suitcase 1904 from rolling more than 5 degrees relative to first suitcase 1902 while first suitcase 1902 and second suitcase 1904 are substantially filled. Another embodiment may allow the second suitcase to roll up to 30 degrees relative to the first suitcase. This type of stability of assembly 1900 may be referred to as internal roll stability. In contrast, the resistance to rotation of the entire assembly 1900 about its longitudinal axis may be determined primarily by the distance between the wheels on the bottom of first suitcase 1902, and that type of stability may be referred to as external roll stability.

Assembly 1900 also exhibits good internal and external pitch stability. For purposes of the present disclosure, internal trim stability refers to the tendency of the two suitcases 1902, 1904 to maintain the same angle of inclination relative to one another when first and second suitcases 1902, 1904 are in a reliable configuration. In other words, the attachment members, weight distribution, and other features that act against could otherwise cause one suitcase to deflect upward or downward relative to the other suitcase (even when the traveler is gripping handle 1910 or any other portion of first suitcase 1902 or second suitcase 1904). Good internal pitch stability is one of the attributes that makes it easy to lift wheels 1920 by pressing down on handles 1910. External pitch stability refers to the tendency of the complete assembly 1900 to hold both wheels 1918, 1920 on the ground.

Moreover, assembly 1900 exhibits good internal and external deflection stability. For purposes of the present invention, internal yaw stability refers to the tendency of first and second totes 1902, 1904 to maintain the same relative alignment of their longitudinal axes. In other words, considering the contact between first and second totes 1902, 1904, the rear portion of second tote 1904 does not tend to rotate relative to front 2502 of first tote 1902. External yaw stability refers to the tendency of assembly 1900 to track straight as it is rolling against all four wheels. The characteristics of pitch, roll, and yaw stability exhibited by assembly 1900 contribute to assembly 1900 being self-stabilizing both when in motion and when stationary, regardless of whether suitcases 1902, 1904 are tilted.

Referring to fig. 30, another embodiment of a stabilizer 3002 built into a pocket 3004 at the top of suitcase 1902 is shown. One end of the stabilizer 3002 may be sewn or otherwise secured into the pocket 3004, while the other end 3006 may be used to couple to another suitcase (not shown). When not in use, the stabilizer 3002 may be stored in the pocket 3004. In other embodiments, stabilizer 3002 may be completely removable from pocket 3004, and one end (not shown) of stabilizer 3002 may be configured to attach to handles 1910, 1916 or other suitable locations on suitcase 1902, while the other end 3006 of stabilizer 3002 is attached to a suitable location on another suitcase (not shown).

Fig. 31 shows another embodiment of a Y-shaped stabilizer 3100 that may be used to form the luggage assembly 1900 (fig. 19). One attachment member 3110 of the stabilizer 3100 includes a triangular opening having a base positioned around the vertical support of the retractable handle 1910. Another section 3112 of stabilizer 3100 extends over the top of suitcases 1902, 1904 and includes an end configured to engage at least a portion of handle 1912. The stabilizer 3100 may also include an adjustable extension 3114 coupled between the attachment members 3110, 3112 using a buckle or other suitable fastener. Stabilizer 3100 is configured to extend between suitcases 1902, 1904 and to hold suitcase 1902 adjacent to suitcase 1904 when suitcases 1902, 1904 are upright, tilted, moving, and stationary. Extension 3114 may be configured to allow a traveler to pull excess material from between handles 1910, 1912 and draw suitcases 1902, 1904 closer together and extend the length of extension 3114 as desired.

Figure 32 shows another embodiment of a Y-shaped stabilizer 3200 that may be used to form a luggage assembly 1900. One section 3202 of stabilizer 3200 is positioned around the vertical support of retractable handle 1910 and another section 3204 of stabilizer 3200 extends over the top of suitcase 1904 and includes an end 3206 configured to wrap around handle 1912 and engage one of a series of slots or rods 3208 positioned on the center or extension of stabilizer 3200 between handles 1910 and 1912. Stabilizer 3200 is configured to extend between suitcases 1902, 1904 and to hold suitcase 1902 adjacent to suitcase 1904 when suitcases 1902, 1904 are upright, tilted, moving, and stationary. The traveler can engage end portion 3206 in one of slots or rods 3208 to pull excess material from between handles 1910, 1912 and draw suitcases 1902, 1904 closer together.

Thus, as has been described, embodiments of the rollable luggage assembly may be constructed of two or more pieces of luggage using suitable attachment means to keep the luggage assembly self-stabilizing both when stationary and when rolled. The size and weight of each piece of luggage when full and the configuration of the attachment means may be used to keep the pieces balanced on the wheels of the assembly.

In view of the principles and example embodiments described and illustrated herein, it will be recognized that the illustrated embodiments can be modified in arrangement and detail without departing from such principles. For example, alternative embodiments may form luggage assemblies from other types and sizes of bags, other types of attachment members, and the like using methods similar to those described above. For example, in some embodiments, the trailing bag may be shaped substantially like a rectangular cuboid. Further, a second trailing bag may be attached to the first trailing bag to form a rolling luggage assembly with 6 wheels on the ground. Likewise, more than two trailing bags may be used.

Moreover, the foregoing discussion has focused on particular embodiments, but the disclosure encompasses other configurations. In particular, although expressions such as "in one embodiment," "in another embodiment," etc., are used herein, these phrases are intended to generally refer to embodiment possibilities and are not intended to limit the invention to particular embodiment configurations. As used herein, these terms may refer to the same or different embodiments that may be combined into other embodiments.

Similarly, while example processes have been described with respect to particular operations performed in a particular order, numerous modifications may be applied to those processes to obtain numerous alternative embodiments of the present invention. For example, alternative embodiments may include processes that may use fewer than all of the disclosed operations, processes that use additional operations, and processes in which the individual operations disclosed herein are combined, subdivided, rearranged, or otherwise altered.

In view of the wide variety of useful permutations that may be readily derived from the example embodiments described herein, this detailed description is intended to be illustrative only and should not be taken as limiting the scope of the invention. What is claimed as the invention, therefore, is all implementations that come within the scope of the following claims and all equivalents to such implementations.

Claims (45)

1. An apparatus, comprising:

a first attachment member configured to fit under a handle on a first suitcase, the handle sized to fit a person's hand;

an extension portion coupled to the first attachment member, the extension portion configured to extend between the first and second carrying cases and to hold the first carrying case adjacent to the second carrying case when the first and second carrying cases are upright, tilted, moving, and stationary, and the extension portion configured to fold over the handle on the first carrying case, and the attachment member configured to adjustably engage a section of the extension portion to couple the first and second carrying cases together; and

instructions for forming a luggage assembly from the first and second carrying cases using the apparatus.

2. The apparatus of claim 1, further comprising:

a series of slots along the length of the extension, at least one end of the apparatus configured to engage a handle on the second suitcase, and the slots spaced to accommodate the different sizes of the first suitcase and the second suitcase, the handle on the second suitcase sized to accommodate a person's hand.

3. The apparatus of claim 1, further comprising:

the first attachment member includes at least one of the group consisting of: a cotter pin and a U-shaped end to engage the edges of the slot in the extension.

4. The apparatus of claim 1, further comprising:

the extension portion is further configured to engage at least half of a handle on the second suitcase sized to fit a human hand.

5. The apparatus of claim 1, further comprising:

the extension portion includes a slot that engages a handle on the second suitcase sized to fit a person's hand.

6. The apparatus of claim 1, further comprising:

the first attachment member includes an end shaped to engage an edge of a slot on the extension portion.

7. The apparatus of claim 1, further comprising:

a second attachment member configured to engage at least half of a length of a handle on the second suitcase, the second handle sized to accommodate a human hand.

8. The apparatus of claim 1, further comprising:

a stabilizer is built into the second suitcase.

9. A baggage stabilizing device, comprising:

a stabilizer configured to engage a first piece of wheeled luggage and a second piece of wheeled luggage such that the first and second pieces of luggage remain self-stabilizing and adjacent to each other both when upright and tilted, and when in motion and stationary, the stabilizer comprising:

a first connector configured to hold a portion of the first piece of luggage;

a second connector configured to hold a portion of the second piece of luggage; and

an extension portion coupled between the first and second connectors;

the first connector may be attached at different locations along the extension portion to adjust the length of the extension portion between the first and second pieces of luggage; and

the stabilizer is removable from the first and second pieces of luggage.

10. The baggage stabilizing apparatus of claim 9, further comprising:

the first connector is configured to wrap around a handle on top of the first piece of luggage.

11. The baggage stabilizing apparatus of claim 9, further comprising:

the extension is configured with a series of slots, one of the slots configured to fit over a retractable handle on the second piece of luggage, and the other slots configured to be engaged by the first connector based on the size of the first and second pieces of luggage.

12. The luggage stabilizing apparatus of claim 9, further comprising the second connector configured to engage a substantial portion of a handle on top of the second piece of luggage.

13. The baggage stabilizing arrangement according to claim 9, further comprising at least one of the group consisting of:

the second connector is a slot in the extension,

the first connector includes an end configured to engage a handle on the top of a first suitcase, and

the second connector is configured to fit under a handle on top of a second suitcase, the second handle sized to fit a person's hand and the second attachment member further configured to engage at least half of a length of the second handle.

14. The luggage stabilizing apparatus of claim 9, further comprising

The first piece of wheeled luggage; and

the second piece of wheeled luggage.

15. A method for forming a self-stabilizing luggage assembly, the method comprising:

a first piece of luggage is coupled in contact with a second piece of luggage using an adjustable stabilizer configured to couple a handle on the first piece of luggage to a handle on the second piece of luggage while wheels on the bottom of the first and second pieces of luggage are held on the ground when the first and second pieces of luggage are skewed, upright, moving, and stationary.

16. The method of claim 15, further comprising:

engaging a handle on the top of the first piece of luggage with one end of the stabilizer; and

positioning a slot in the other end of the stabilizer on a handle at the top of the second piece of luggage.

17. The method of claim 15, further comprising:

engaging a handle on the top of the first piece of luggage with one end of the stabilizer; and

engaging a handle on the top of the second piece of luggage with the other end of the stabilizer.

18. An apparatus, comprising:

means for attaching two pieces of luggage to one another, the means including one end configured to be coupled to a handle on top of a first piece of luggage, another end configured to be coupled to a handle on a second piece of luggage, and an intermediate portion configured to adjustably extend between the handles.

19. The apparatus of claim 18, further comprising:

the means for attaching two pieces of luggage includes a series of rectangular slots in the intermediate portion, the slots being spaced apart from one another such that different slots are used to accommodate the two pieces of luggage of different sizes.

20. The apparatus of claim 18, further comprising:

the intermediate portion includes adjustable straps to accommodate different sizes of luggage.

21. The apparatus of claim 19, further comprising:

a first attachment member coupled to the middle portion and configured on a first end to fit under the handle on the first piece of luggage, the first attachment member configured to engage at least half of a length of the handle.

22. The apparatus of claim 18, further comprising:

a first attachment member coupled to the intermediate portion and configured on the first end to fit under the handle on the first piece of luggage and engage at least half of the length of the handle on the first piece of luggage; and

a second attachment member coupled to the middle portion and configured to fit under the handle on the second piece of luggage and engage at least half of the length of the handle on the second piece of luggage.

23. A method for forming a self-stabilizing luggage assembly from luggage having wheels, the method comprising:

coupling a handle on a first piece of luggage to a handle on a second piece of luggage using an adjustable stabilizer, wherein the adjustable stabilizer is configured to hold the first piece of luggage in contact with the second piece of luggage in a manner that: when the first and second pieces of luggage are skewed, upright, moving, and stationary, the wheels on the bottom of the first and second pieces of luggage tend to remain on the ground.

24. A baggage stabilizing device, comprising:

a central body having a first end, a second end, and at least one engagement structure between the first end and the second end;

a first attachment member coupled to the first end of the central body; and

a second attachment member coupled to the second end of the central body;

wherein the first attachment member is configured to engage a first handle at an upper portion of a first suitcase;

the second attachment member is operable to pass under a second handle at an upper portion of a second suitcase and then engage the engagement structure of the central body, thereby causing the luggage stabilizing apparatus to capture the second handle, the central body configured to:

when the first attachment member engages the first handle and a second engagement member engages the central body

Said engagement structure extending between said first and second handles, an

The first suitcase is then held adjacent to the second suitcase with sufficient force to be within the first suitcase

And the second suitcase when both are tilted, form a substantially stable luggage assembly.

25. The apparatus of claim 24, wherein:

the second end of the central body is configured to fold over the handle on the second suitcase and allow the second attachment member to engage the engagement structure of the central body.

26. A luggage assembly, comprising:

a first piece of luggage comprising a top, a bottom, a front, a rear, and one or more wheels at the bottom of the first piece;

a second piece of luggage comprising an upper portion, a top, a bottom, a front, a rear, a left side, a right side, and one or more wheels at the bottom of the second piece; and

an attachment member affixed to the second piece of luggage, the attachment member coupling the second piece of luggage to the first piece of luggage such that the first and second pieces of luggage are self-stabilizing in a skewed and vertical orientation and when in motion and when stationary.

27. A luggage assembly according to claim 26, further comprising:

a handle at the top of the first piece of luggage; and is

The attachment member is coupled to the handle.

28. A luggage assembly according to claim 26, further comprising:

a handle at the top of the first piece of luggage; and is

The attachment component includes an attachment strap attached to the second piece of luggage wrapped around the handle at the top of the first piece of luggage.

29. A luggage assembly according to claim 28, wherein the attachment strap comprises:

a left section and a right section each extending from the second piece of luggage to the handle of the first piece of luggage; and

a middle segment connecting the left and right segments and extending across the handle.

30. A luggage assembly according to claim 28, further comprising:

the second piece of luggage includes a longitudinal center between the left side and the right side; and is

The attachment strap includes two ends, one end affixed at a point spaced between the left side and the longitudinal center, and the other end affixed at a point spaced between the right side and the longitudinal center.

31. A luggage assembly according to claim 30, wherein the attachment strap is affixed to the rear of the second piece of luggage.

32. A luggage assembly according to claim 26, wherein a percentage of the weight of the second piece of luggage is at or behind at least one wheel on the bottom of the first piece of luggage when the first and second pieces of luggage are tilted in a rolling configuration.

33. A luggage assembly according to claim 26, further comprising:

a substantially rigid handle at the top of the first piece, wherein the handle provides leverage for tilting the first and second pieces of luggage.

34. A luggage assembly according to claim 26, further comprising the attachment member being dimensioned to engage the first piece of luggage in the following manner: preventing the second piece of luggage from moving away from the first piece of luggage when the first and second pieces of luggage are tilted.

35. A luggage assembly according to claim 26, further comprising the second piece of luggage having a weight, a portion of which rests behind at least one wheel on the second piece of luggage when the second piece of luggage is tilted, thereby tending to cause the rear portion of the second piece of luggage to press against the front portion of the first piece of luggage.

36. A luggage assembly according to claim 26, further comprising at least a portion of the front portion of the first piece of luggage remains in contact with at least a portion of the rear portion of the second piece of luggage while the luggage assembly is in motion when the first and second pieces of luggage are tilted.

37. A luggage assembly according to claim 28, further comprising the first handle being a rigid extendable handle and the attachment strap being flexible.

38. A luggage assembly according to claim 26, further comprising:

at least one of the group consisting of:

a mating strap on the front portion of the first piece, the attachment component including a mating hook to engage the mating strap; and

a set of straps on the first piece of luggage having connector portions that engage connector portions on a set of straps on the second piece of luggage.

39. A method for forming a self-stabilizing luggage string, the method comprising:

standing a first piece of luggage upright, wherein the first piece of luggage includes a bottom having one or more wheels;

positioning a second piece of luggage substantially adjacent to the first piece of luggage, wherein the second piece of luggage comprises a left side, a right side, a bottom with one or more wheels, an upper portion, and an attachment member affixed to the upper portion;

connecting the attachment member to the first piece of luggage to form the self-stabilizing luggage string as follows: will substantially prevent the second piece of luggage from moving away from the first piece of luggage when the first and second pieces are tilted, the luggage assembly remaining self-stabilizing both when upright and tilted, and when in motion and stationary; and

deflecting the first and second pieces to form the self-stabilizing luggage string having a weight substantially supported by at least one of the wheels on the bottom of the first piece of luggage and at least one of the wheels on the bottom of the second piece of luggage.

40. The method of claim 39, the connecting the attachment member further comprising at least one of the group consisting of:

a handle at the top of the first piece of luggage and the attachment member comprises an attachment strap wrapped around the handle at the top of the first piece of luggage that is attached to the second piece of luggage;

a mating strap on the front portion of the first piece, the attachment component including a mating hook to engage the mating strap; and

a set of straps on the first piece of luggage having connector portions that engage connector portions on a set of straps on the second piece of luggage.

41. A luggage assembly, comprising:

a first piece of luggage;

a second piece of luggage including an attachment member configured to couple the second piece of luggage in contact with at least a portion of the first piece of luggage, and the first and second pieces of luggage are configured to be self-stabilizing when the first and second pieces of luggage are assembled and positioned in vertical and inclined orientations, and when in motion and stationary.

42. A luggage assembly according to claim 41, further comprising:

the attachment member is a flexible and substantially non-elastic handle strap.

43. A luggage assembly according to claim 41, further comprising:

the first bag comprises a top;

the second bag includes a top, and when the first and second bags are in motion in an inclined orientation, the relative position of the tops of the first and second bags changes by less than 5% of the height of the first bag.

44. A luggage assembly according to claim 16, further comprising:

the first bag includes a bottom and a back and a set of wheels on the bottom;

the second bag includes a bottom and a back and a set of wheels on the bottom;

a sufficient portion of the weight of the assembly rests in front of the wheels of the first bag to prevent the first and second bags from returning from the tilted orientation to the upright orientation.

45. The luggage assembly of claim 41, the attachment member further comprising at least one of the group consisting of:

a handle at the top of the first bag and the attachment member comprises an attachment strap attached to a handle of the second bag wrapped around the first bag;

a mating strap on a front portion of the first piece and a mating hook on the second bag to engage the mating strap; and

a set of straps on the first bag having connector portions that engage connector portions on a set of straps on the second bag.