GB2223685A - An electric steplessly speed-changing running apparatus - Google Patents
An electric steplessly speed-changing running apparatus Download PDFInfo
- Publication number
- GB2223685A GB2223685A GB8824082A GB8824082A GB2223685A GB 2223685 A GB2223685 A GB 2223685A GB 8824082 A GB8824082 A GB 8824082A GB 8824082 A GB8824082 A GB 8824082A GB 2223685 A GB2223685 A GB 2223685A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- belt
- shaft
- speed
- annular groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/0015—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with an adjustable movement path of the support elements
- A63B22/0023—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with an adjustable movement path of the support elements the inclination of the main axis of the movement path being adjustable, e.g. the inclination of an endless band
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/02—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable endless bands, e.g. treadmills
- A63B22/0235—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable endless bands, e.g. treadmills driven by a motor
- A63B22/0242—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with movable endless bands, e.g. treadmills driven by a motor with speed variation
- A63B22/0257—Mechanical systems therefor
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- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The running apparatus includes a running belt driven by a drive shaft 13. The drive to the drive shaft 13 is imparted by way of an assembly comprising an active wheel 50 having a fixed half 51 and a movable half 55 forming therebetween an annular groove, a slidable outer sleeve 62 carrying the movable half 55, an inner sleeve 64 slidably but non-rotatably mounted within the outer sleeve 62, a shifting member 69 rotatably secured to the outer sleeve 62 and having a screw rod 691 threadedly engaged with the inner sleeve 64, a spring-loaded following wheel 80 having a corresponding annular groove and coupled to the drive shaft 13, and a V-belt 90 extending in and between the annular grooves of the wheels 50, 80. An electric elevator 120 is also provided for changing the inclination of the running belt. The drive speed of the drive shaft 13 may be steplessly varied by actuating the shifting member 69 so as to change the distance apart of the wheel halves 51 and 55 and to thus lower or raise the V-belt 90 within the intervening annular groove. <IMAGE>
Description
AN ELECTRIC STEPLESSLY SPEED-CHANGING RUNNING APPARATUS
BACKGROUND OF THE INVENTION
The present invention relates to a running apparatus, and more particularly to an electric steplessly speed-changing one.
An electric running apparatus provides a circulating running belt for a user to run thereon and must be caPable of being grade 1 y increased or decreased from a first speed to a second speed for safety and comfortableness of the user. To this end, the rpm of the motor is changed or a mechanical speed-changing device is incorporated into the apparatus. The former can be achieved by a D.C. motor which however is expensive, or by an A.C. motor equipped with a frequency-controller which, nevertheless, occupies a relatively large space, is still expensive and has an insufficient torque for operation in a low speed. The mechanical speed-changing device can be categorized into the stepped tYPe which is not safe and comfortable for the user and the stePless type which is thus suitable and ideal to be incorporated into the running apparatus.In the prior art, it has been proposed to incorporate an elevator into the running apparatus for changing the inclination of the running belt to simulate a sloPed runwaY. The elevator, however, is manual liy operated and can be adjusted only when the running belt stops running which means that there is no way to adjust the inclination of the running belt during the user's running thereon.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide further an electric step less ly speed-changing running apparatus.
It is further an object of the present invention to provide an electric steplessly speed-changing running apparatus having the inclination of the running belt capable of being adjusted uPon a user's running thereon.
According to the present invention, an electric steplessly sPeed-changing running apparatus includes a circulating running belt, a main motor having a first shaft, an active wheel including a fixed half having a second shaft secured to the first shaft and a centrally holed movable half slidably but non-rotatablu mounted on the second shaft and capable of cooperating with the fixed half to form therebetween a first annular groove of
V-shaped crosssection, an outer sleeve slidably in the direction of the first shaft but non-rotatablu mounted in the machine frame and including a first end and a second opposite end rotatably connecting therein the movable half and capable of carrying therewith the lovable half to slide on the second shaft, an inner sleeve slidably but non-rotatablY mounted and matched in the outer sleeve and including a third end and a fourth opposite end rotatablY fixing therein the second shaft, a shifting medium rotatably secured to the first end and having a screw rod threadedlY engaged to the third end such that when the shifting medium is rotated the medium and the third end will have a relative movement which in turn displaces the outer sleeve and the movable half which in turn changes the width of the clearance of the annular groove, an auxiliary motor mounted for driving the shifting medium, a spring-loaded following wheel having a corresPonding annular groove having the width clearance thereon capable of being automatically varied in accordance with a change of the clearance width of the first annular groove and interrelated to the running belt, and a V-belt mounted in and between the annular grooves of the wheels.
The running apparatus can further be provided with an electric elevator for adjusting the inclination of the running belt.
Certainly, the operation of the main motor, the auxiliary motor and the electric elevator can be computerized.
The present invention may best be understood through the following description vith reference to the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWING
Fig. 1 is a Perspective view showing a preferred embodiment of an electric steplessly sPeed-changing running apparatus according to the Present invention;
Fig. 2 is a sectional view taken along line 2-2 in
Fig. 1;
Fig. 3 is a sectional view taken along line 3-3 in
Fig. 1;
Fig. 4 is a sectional view showing a sPeed-changing device in Fig. 3;
Fig. 5 is a sectional view taken along line 5-5 in
Fig. 3;
Fig. 6 is a sectional view showing the belt wheel mounted on a following shaft in Fig. 3;
Fig. 7 is a sectional view taken along line 7-7 in
Fig. 6;
Fig. 8 is a perspective view showing an elevator according to the present invention;;
Fig. 9 is an operating flow chart of an electric steplessly speed-changing running apparatus according to the present invention;
Fig. 10 is a Perspective view showing further an elevator according to the present invention; and
Fig. 11 is a PersPective view showing a hand-operated elevator for an electric steplessly speed-changing running aPParatus according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Figs. 1-8, an electric steplessly speed-changing running apparatus according to the present invention includes a machine frame 10 having a receiving room 11 and a longitudinal groove 12, two transverse shafts 13. 14 rotatably, spacedly and parallel mounted in groove 12, a running belt 20 mounted on and between shafts 13, 14 to be driven to circulate thereby, a main motor 30 mounted in room 11 and having a motor shaft 31, a speed-changing device 40 including an active wheel 50, a shifting mechanism 60, an auxiliary motor 70, a following shaft 75, a spring-loaded following wheel 80, a V-belt 90 and a belt transmission assembly 100, an electric elevator 120, and an electronic control device 130 computerizing the operation of main motor 30, auxiliary motor 70 and electric elevator 120.
Active wheel 50 includes a fixed half 51 having a disk portion 52 and a shaft 53 fixed to shaft 31 br a bolt 54, and a movable half 55 having a disk portion 56 capable of cooperating with disk portion 52 to form therebetween an annular groove of V-shaped crosssection and a centrally holed shaft 57 slidably but non-rotatablY mounted on shaft 53 by the provisions of a ker 59 and a keyway 58 on shafts 53, 57.
Shifting mechanism 60 includes an outer sleeve 62, an inner sleeve 64 and a shifting medium including a cap 68 and a disk Plate 69. Outer sleeve 62 slidably (in the direction of motor shaft 31) but non-rotatably mounted on a bracket 61 secured to frame 10 includes a first partly closed end and a second opposite enlarged end rotatably connecting therein holed shaft 57 by a bearing 63 and two retaining rings 631 to be caPable of carrying therewith movable half 55 to slide on shaft 53. Inner sleeve 64 slidably but non-rotatably mounted and matched in outer sleeve 62 by a key 65 and a keyway 66 provided therebetween includes a third closed end and a fourth enlarged opposite end rotatably fixing therein shaft 53 by a bearing 67 and two retaining rings 671. Cap 68 rotatably matching against the outer surface of the first Partly closed end of outer sleeve 62 the opposite inner surface of which is rotatably matched against by disk plate 69 having a screw rod 691 threadedly engaged to the third closed end of inner sleeve 64 includes a toothed outer peripheral surface 681 and is secured to disk Plate 69 by bolts 690 such that when cap 68 is rotated, screw rod 691 and the third closed end of inner sleeve 64 will have therebetween a relative movement which in turn disPlaces outer sleeve 62 and movable half 55 which in turn changes the clearance width of the annular groove or the effective pitch diameter of active wheel 50.
Auxiliary motor 70 received in room 11 includes a shaft 71 mounting thereon a gear 72 meshing with toothed surface 681. Following shaft 75 is parallel to motor shaft 31 and rotatably mounted in room 11.
Following wheel 80 includes a fixed half 81, and a movable half 82 being loaded thereon with a spring 84 positioned by a Positioner 83 retained on following shaft 75 by a retaining ring 831, wherein halves 81, 82 are slidably but non-rotatably secured to following shaft 75 by a key 85 and a keyway 86 provided therebetween and thus form therebetween a corresponding annular groove having a variable clearance width.
V-belt 90 is mounted in and between annular grooves of wheels 50 and 80.
Belt transmission assembly 100 includes a first belt wheel 101 secured to following shaft 75, a second belt wheel 110 fixed to shaft 13 and a belt 115 mounted on and between belt wheels 101, 110. First belt wheel 101 includes as shown in Figs. 6 & 7 an inner wheel 102 secured to following shaft 75 and having a plurality of cut peripheral portions 103, a plurality of pawls 104 respectively mounted on peripheral portions 103, a plurality of sPrings 105 respectively mounted between portions 103 and pawls 104 for respectively urging outwardly pawls 104, and an outer wheel 106 which is uni-directionally rotatably mounted on inner wheel 102 by means of two bearings 107 and an internal sawtoothed surface 108 provided therein engagable with pawls 104 and includes an annular peripheral groove 109 for engaging therein a segment of belt 115 in order to thus form a free coupling function between belt wheel 101 and following shaft 75. Thus, a clockwise rotation of following shaft 75 will carry outer wheel 106 to rotate therewith and following shaft 75 will permit outer wheel 106 to clockwise rotate faster than inner wheel 102.
Elevator 120 includes two spaced upright legs having two rack Portions 126, two housings 125 respectively housing therein the spaced legs and secured to machine frame 10, a shaft 121 fixing thereto a middle worm gear 123 and two opposite end gears 122 rotatably connected respectively to housings 125 and respectively meshing with rack portions 126, a worm 124 fixing thereon a sProcket and meshing with worm gear 123, a motor 127 having a shaft mounting thereon a sprocket, and a chain 128 mounted on and between the sprockets of worm 124 and motor 127.
The operation of the present running apparatus is as follows:
Running belt 20 is driven by main motor 30 to circulate through active wheel 50, V-belt 90, following wheel 80, following shaft 75, belt transmission assembly 100 and shaft 13. Upon speed-changing, auxiliary motor 70 rotate disk plate 69 to effect a relative movement between inner sleeve 64 and disk plate 69 to in turn incur a relative movement between fixed and movable halves 51 & 55 so that the clearance width of the annular groove of active wheel 50 will be increased (decreased) to lower down (raise uP) V-belt 90 toward from the bottom of the annular groove and thus V-belt 90 is loosened tightened to allow spring 84 to push movable half 82 toward fixed half 81 (to urge movable half 82 against spring 84) to thus decrease (increase) the clearance width of the annular groove of following wheel 80 to increase (decrease) the effective pitch diameter of following wheel 80 until a steady state is reached by V-belt 90 and spring 84, in order to thus steplessly change the speed of running belt 20.
If the inclination of running belt 20 is to be changed, motor 127 is energized to raise or lower housings 125 through worm 124, worm gear 123, shaft 121 and gears 122.
As clearly shown in Figs. 3 & 5, movable (fixed) half 55 (51) and movable (fixed) half 82 (81) are positioned on the opposite side of V-belt 90 so that upon a relatively low (high) speed of running belt 20, movable half 55 of active wheel 50 will move leftwards (rightwards) and movable half 82 of following wheel 80 will also move leftwards (rightwards) so that V-belt 90 will have a parallel displacement to ensure that V-belt 90 will always transmit smoothly between wheels 50 & 80 and will not be worn single-sidedlu. In addition, with a free coupling function provided on belt wheel 101, the user on running belt 20 can freely run thereon with a sPeed higher than that of running belt 20 regularly driven by following shaft 75.
As shown in Fig. 9, electronic control device 130 can be easily designed by those skilled in the relevant art to perform the following functions:
Before starting the present running apparatus, the user must select an auto mode or a manual mode to use the running apparatus. If the former is selected, a further selection must be made among A. B and C programs, in which
A program may rePresent a standard one allowing running belt 20 to circulate from a low speed to a high speed maintained for a predetermined period of time to be gradually reduced to a zero speed. B program may allow running belt 20 to circulate at a vavy speed and C program may allow running belt 20 to have an inclination varied in accordance with the change of its circulating speed. Then, the user further selects to time-set or not. The running apparatus can now be started.If no selection is made before starting the running apparatus, the running apparatus will operate under a stored standard program (or a program selected last time).
After started, the running apparatus has a warming-up time to circulate running belt 20 at a walking speed and then the running belt 20 is increased to a set running speed gradually. If the manual operation is selected, running belt 20 will circulate at the set speed if the touch control speed key is not touched to increase or decrease the set speed. If the automatic operation is selected, running belt 20 will circulate in the way as instructed by the selected program. If the time set is arrived, running belt 20 will have its circulating speed gradually reduced to a walking sPeed maintained for a predetermined period of time for the user to take his breathing regularly. Then, the running apparatus automatically stops. If the user feels uncomfortable during his running or must leave from running belt 20 or does not pre-set the exercise time, he can press down a stoP switch which also allows running belt 20 to have its speed gradually reduced to a walking speed maintained for a predetermined period of time and then to come to a stop.
It can be noticed that as compared with the prior running apparatus having the running belt thereof having a fixed inclination during the time within which the runner is running thereon, the inclination of the present running belt 20 can be varied with the time and/or the speed at which belt 20 is circulating according to the instructions of a selected program so that the user may better feel that he is running on a "real" natural runaway As shown in Fig. 10, a second Preferred embodiment of an elevator 140 according to the present running apparatus includes two sPaced leg frames 141 each of which includes a support 142, a slider 145 slidably mounted in a groove 146 at a longitudinal side of frame 10. a first arm 143 having a longitudinal groove 144 and two opposite ends pivotally secured to support 142 and slider 145 respectively, and a second arm 147 having two opposite ends thereof respectively pivotally secured to the relevant longitudinal side of frame 10 and an intermediate portion of longitudinal groove 144, two screw rods 148 each of which is rotatably secured to the relevant longitudinal side of frame 10 and includes a first end threadedly engaging vith slider 145 and a second opposite end fixing thereto a sprocket 149, a chain 151 counted on and between sprockets 149, a following gear 152 fixed to one of screw rods 148, and a motor 153 mounted in frame 10 and having a geared shaft 154 meshing with following gear 152 so that screw rods 148 can be rotated to translate sliders 145 for adjusting the inclination of frame 10.
Certainly, if a reduced cost for the present running apparatus is desired, the electric elevator can be changed into a manual one as shown in Fig. 11 which is the same with elevator 120 excePt that worm 124 forms thereon a manually operated crank handle 160 instead of being driven by motor 127 and chain 128, with the disadvantage that an automatic change of the inclination of running belt 20 can be enjoyed no more.
Through the above description, it should now become readily apparent how and whu the Present invention can achieve the objects it contemplates.
Claims (12)
1. An electric steplessly speed-changing running apparatus comprising:
a machine frame;
two frame shafts rotatably, sPacedly and paralle1 in said machine frame;
a running belt mounted on and between said shafts to be driven to circulate thereby;
a main motor mounted in said frame and having a first motor shaft;
an active wheel having a first annular groove of
V-shaped crosssection and including a first fixed half having a second shaft fixed to said first motor shaft and a centrally holed first movable half slideably but non-rotatablu mounted on said second shaft and capable of cooperating with said fixed half to form therebetween said annular groove;;
an outer sleeve slidably in a direction of said first motor shaft but non-rotatably mounted in said frame, and including a first end, and a second opposite end rotatably connecting therein said movable half and caPable of carrying therewith said movable half to slide on said second shaft;
an inner sleeve slideably but non-rotatablu mounted and matched in said outer sleeve and including a third end and a fourth opposite end rotatably fixing therein said second shaft;
a shifting medium rotatably secured to said first end and having a screw rod threadedly engaged to said third end such that when said shifting medium is rotated, said medium and said third end will have a relative movement which in turn displaces said outer sleeve and said movable half which in turn changes the width of a clearance of said first annular groove;;
an auxiliary motor mounted in said frame for driving said shifting medium to rotate;
a spring-loaded following wheel having a corresponding second annular groove having the width of a clearance thereon capable of being automatically varied in acordance with a change of said clearance width of said first annular groove, and interrelated to one of said frame shafts; and
a V-belt mounted in and between said annular grooves of said wheels.
2. An electric steplessly speed-changing running apparatus according to Claim 1 wherein.
said following wheel includes a secnd fixed half and a second movable half cooperating to form therebetween said second annular groove; and
said first fixed half and said second movable half are positioned at a same side of said V-belt.
3. An electric steplessly sPeed-changing running apparatus according to Claim 1, further comprising an electronic control device electrically connected to said main and auxiliary motors for controlling an operation of said motors.
4. An electric steplessly sPeed-changing running apparatus according to Claim 1 wherein said shifting medium includes:
a cap rotatably matching on a first side of said first end; and
a disk plate rotatably matching on a second opposite side of said first end, secured to said cap and provided with said screw rod.
5. An electric steplessly sPeed-changing running apparatus according to Claim 4 wherein.
said cap includes a toothed outer periPheral surface; and
said auxiliary motor has a geared motor shaft meshing with said toothed peripheral surface.
6. An electric steplesslr speed-changing running apparatus according to Claim 1, further comprising:
a following shaft rotatably mounted in said frame, and connected to and driven by said following wheel;
two belt wheels respectively provided on said following shaft and said one frame shaft; and
a belt mounted on and between said two belt wheels.
7. An electric steplessly speed-changing running apparatus according to Claim 6 wherein between said following shaft and said respective belt wheel, there is provided with a free coupling function.
8. An electric steplessly speed-changing running apparatus according to Claim 1. further comprising an elevator for changing an inclination of said frame.
9. An electric steplessly speed-changing running apparatus according to Claim 8 wherein said elevator includes:
two Parallellu spaced upright legs each of which includes a rack portion;
two housings respectively housing therein said legs and secured to said frame;
a shaft fixing thereto middle worm gear and two opposite end gears rotatably connected respectively to said housings and respectively meshing with said rack portions;
a worm meshing with said worm gear; and
a driving mechanism driving said worm to rotate;
10.An electric steplessly speed-changing running apparatus according to Claim 8 wherein said elevator
includes:
two spaced supports placed on a ground surface;
two sliders slideably mounted at two sides of
said frame;
two first arms respectively having two opposite
ends pivotably connected to said supports and said sliders;
two second arms respectively having two opposite
ends thereof pivotably secured to said two sides of said
frame and respective intermediate portions of said first
arms;
two second screw rods rotatably secured to said
two sides respectively and having first ends respectively
threadedly engaging with said sliders and second ends
respectively fixing thereto two sprockets;
a chain mounted on and between said two
sprockets; and
a driving mechanism driving one of said second
screw rods to rotate.
11. An electric steplessly speed-changing running apparatus comprising:
a frame;
two parallel rotatable shafts spaced apart in said frame;
a running belt mounted on and extending between said shafts to be driven thereby;
a main motor mounted on said frame;
an active wheel driven by said main motor and having a fixed half and a movable half defining therebetween an annular groove of substantially V-shaped cross-section;
a following wheel having an annular groove and coupled to drive one of said shafts;
a V-belt mounted in and between said annular grooves of said wheels; ;
a shifting member rotatable to move said movable half with respect to said fixed hal to vary the clearance width of the annular groove of said active wheel and to thereby lower or raise said V-belt within said groove to effect a change of the speed at which said following wheel is driven by said active wheel; and
an auxiliary motor mounted on said frame for rotating said shifting member to effect such a speed change.
12. An electric steplessly speed-changing running apparatus substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8824082A GB2223685A (en) | 1988-10-14 | 1988-10-14 | An electric steplessly speed-changing running apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8824082A GB2223685A (en) | 1988-10-14 | 1988-10-14 | An electric steplessly speed-changing running apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8824082D0 GB8824082D0 (en) | 1988-11-23 |
| GB2223685A true GB2223685A (en) | 1990-04-18 |
Family
ID=10645177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8824082A Withdrawn GB2223685A (en) | 1988-10-14 | 1988-10-14 | An electric steplessly speed-changing running apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2223685A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2354805A (en) * | 1999-09-24 | 2001-04-04 | Borgwarner Inc | Belt CVT with failsafe and pulley adjusters |
| US9956450B2 (en) | 2009-03-17 | 2018-05-01 | Woodway Usa, Inc. | Power generating manually operated treadmill |
| US10238911B2 (en) | 2016-07-01 | 2019-03-26 | Woodway Usa, Inc. | Motorized treadmill with motor braking mechanism and methods of operating same |
| US10709926B2 (en) | 2015-10-06 | 2020-07-14 | Woodway Usa, Inc. | Treadmill |
| USD930089S1 (en) | 2019-03-12 | 2021-09-07 | Woodway Usa, Inc. | Treadmill |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115395391B (en) * | 2022-09-23 | 2023-05-23 | 国网江苏省电力有限公司南通供电分公司 | Secondary fusion intelligent ring main unit convenient to connect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1529569A (en) * | 1974-11-20 | 1978-10-25 | Salsbury E | Power drive transmission assembly |
| US4502679A (en) * | 1982-09-21 | 1985-03-05 | Fred De Lorenzo | Motorized variable speed treadmill |
| US4635928A (en) * | 1985-04-15 | 1987-01-13 | Ajax Enterprises Corporation | Adjustable speed control arrangement for motorized exercise treadmills |
| US4729558A (en) * | 1985-10-11 | 1988-03-08 | Kuo Hai P | Running exerciser |
-
1988
- 1988-10-14 GB GB8824082A patent/GB2223685A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1529569A (en) * | 1974-11-20 | 1978-10-25 | Salsbury E | Power drive transmission assembly |
| US4502679A (en) * | 1982-09-21 | 1985-03-05 | Fred De Lorenzo | Motorized variable speed treadmill |
| US4635928A (en) * | 1985-04-15 | 1987-01-13 | Ajax Enterprises Corporation | Adjustable speed control arrangement for motorized exercise treadmills |
| US4729558A (en) * | 1985-10-11 | 1988-03-08 | Kuo Hai P | Running exerciser |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2354805A (en) * | 1999-09-24 | 2001-04-04 | Borgwarner Inc | Belt CVT with failsafe and pulley adjusters |
| US6406390B1 (en) | 1999-09-24 | 2002-06-18 | Borgwarner Automotive, Inc. | Continuously variable belt drive system |
| GB2354805B (en) * | 1999-09-24 | 2004-02-04 | Borgwarner Inc | Continuosly variable belt drive system |
| US6962543B2 (en) | 1999-09-24 | 2005-11-08 | Borgwarner Inc. | Continuously variable belt drive system |
| US10850150B2 (en) | 2009-03-17 | 2020-12-01 | Woodway Usa, Inc. | Manually powered treadmill with variable braking resistance |
| US11590377B2 (en) | 2009-03-17 | 2023-02-28 | Woodway Usa, Inc. | Manually powered treadmill |
| US10265566B2 (en) | 2009-03-17 | 2019-04-23 | Woodway Usa, Inc. | Manual treadmill and methods of operating the same |
| US10434354B2 (en) | 2009-03-17 | 2019-10-08 | Woodway Usa, Inc. | Power generating manually operated treadmill |
| US10561884B2 (en) | 2009-03-17 | 2020-02-18 | Woodway Usa, Inc. | Manual treadmill and methods of operating the same |
| US10561883B2 (en) | 2009-03-17 | 2020-02-18 | Woodway Usa, Inc. | Manually powered treadmill with variable braking resistance |
| US12115405B2 (en) * | 2009-03-17 | 2024-10-15 | Woodway Usa, Inc. | Treadmill with electromechanical brake |
| US10799745B2 (en) | 2009-03-17 | 2020-10-13 | Woodway Usa, Inc. | Manual treadmill and methods of operating the same |
| US9956450B2 (en) | 2009-03-17 | 2018-05-01 | Woodway Usa, Inc. | Power generating manually operated treadmill |
| US12090356B2 (en) | 2009-03-17 | 2024-09-17 | Woodway Usa, Inc. | Manually powered treadmill |
| US11465005B2 (en) | 2009-03-17 | 2022-10-11 | Woodway Usa, Inc. | Manually powered treadmill |
| US11179589B2 (en) | 2009-03-17 | 2021-11-23 | Woodway Usa, Inc. | Treadmill with electromechanical brake |
| US20220080245A1 (en) * | 2009-03-17 | 2022-03-17 | Woodway Usa, Inc. | Treadmill with electromechanical brake |
| US11369835B2 (en) | 2015-10-06 | 2022-06-28 | Woodway Usa, Inc. | Configuration of a running surface for a manual treadmill |
| US11826608B2 (en) | 2015-10-06 | 2023-11-28 | Woodway Usa, Inc. | Treadmill with intermediate member |
| US10709926B2 (en) | 2015-10-06 | 2020-07-14 | Woodway Usa, Inc. | Treadmill |
| US12208306B2 (en) | 2015-10-06 | 2025-01-28 | Woodway Usa, Inc. | Treadmill with intermediate member |
| US11420092B2 (en) | 2016-07-01 | 2022-08-23 | Woodway Usa, Inc. | Motorized treadmill with motor braking mechanism and methods of operating same |
| US10238911B2 (en) | 2016-07-01 | 2019-03-26 | Woodway Usa, Inc. | Motorized treadmill with motor braking mechanism and methods of operating same |
| US10905914B2 (en) | 2016-07-01 | 2021-02-02 | Woodway Usa, Inc. | Motorized treadmill with motor braking mechanism and methods of operating same |
| USD930089S1 (en) | 2019-03-12 | 2021-09-07 | Woodway Usa, Inc. | Treadmill |
| USD1065370S1 (en) | 2019-03-12 | 2025-03-04 | Woodway Usa, Inc. | Treadmill |
| USD1087256S1 (en) | 2019-03-12 | 2025-08-05 | Woodway Usa, Inc. | Treadmill |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8824082D0 (en) | 1988-11-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |