US3724728A - Can end with bonded seal slide - Google Patents

Can end with bonded seal slide Download PDF

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Publication number
US3724728A
US3724728A US00222070A US3724728DA US3724728A US 3724728 A US3724728 A US 3724728A US 00222070 A US00222070 A US 00222070A US 3724728D A US3724728D A US 3724728DA US 3724728 A US3724728 A US 3724728A
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US
United States
Prior art keywords
slide
combination recited
pull tab
lapping portion
pour opening
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.)
Expired - Lifetime
Application number
US00222070A
Inventor
D Douty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United States Steel Corp
Original Assignee
Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Steel Corp filed Critical Steel Corp
Application granted granted Critical
Publication of US3724728A publication Critical patent/US3724728A/en
Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/506—Rigid or semi-rigid members, e.g. plugs

Definitions

  • a slide has a pivot on the can end and has a slide lapping portion and a slide sealing portion adjacent the slide lapping portion.
  • the slide lapping portion is adapted to register with the can end lapping portion.
  • a pull tab has a connection to the slide.
  • Engaging means engage the can end lapping portion to press the can end lapping portion into intimate contact with the slide lapping portion.
  • a pressure barrier material seals the can end lapping portion at a first predetermined shear strength and the slide sealing portion at a second predetermined shear strength less than the first'p'redetermined shear strength.
  • the slide is rotatable by the pull tab about the pivot to break the bond between the slide sealing portion and the pressure barrier material adjacent the can end lapping portion to uncover the pour opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Abstract

A can end is provided with a pour opening. The can end has a can end lapping portion adjacent the pour opening. A slide has a pivot on the can end and has a slide lapping portion and a slide sealing portion adjacent the slide lapping portion. The slide lapping portion is adapted to register with the can end lapping portion. A pull tab has a connection to the slide. Engaging means engage the can end lapping portion to press the can end lapping portion into intimate contact with the slide lapping portion. A pressure barrier material seals the can end lapping portion at a first predetermined shear strength and the slide sealing portion at a second predetermined shear strength less than the first predetermined shear strength. The slide is rotatable by the pull tab about the pivot to break the bond between the slide sealing portion and the pressure barrier material adjacent the can end lapping portion to uncover the pour opening.

Description

United States Patent 11 1 Douty [5 4] CAN END WITH BONDED SEAL SLIDE [75] Inventor: Donald L. Douty, Franklin Township, Westmoreland County,
[73] Assignee: United States Steel Corporation,
Pittsburgh, Pa.
[22 Filed: Jan. 31, 1972 [21] Appl. No.: 222,070
Related s. Application Data [62] Division Of Ser. N0. 146,945, May 26, 1971, which is a division of sei. N0. 61,384, Aug. 5, 1970, Pat. N0. 3,622,055.
[56] References Cited UNITED STATES PATENTS Then ..222/557 X Baloeca et al. ..220/53 Primary Examiner-Stanley H. Tollberg Attorney-Robert J. Leek, Jr.
[57] ABSTRACT opening. A slide has a pivot on the can end and has a slide lapping portion and a slide sealing portion adjacent the slide lapping portion. The slide lapping portion is adapted to register with the can end lapping portion. A pull tab has a connection to the slide. Engaging means engage the can end lapping portion to press the can end lapping portion into intimate contact with the slide lapping portion. A pressure barrier material seals the can end lapping portion at a first predetermined shear strength and the slide sealing portion at a second predetermined shear strength less than the first'p'redetermined shear strength. The slide is rotatable by the pull tab about the pivot to break the bond between the slide sealing portion and the pressure barrier material adjacent the can end lapping portion to uncover the pour opening.
22 Claims, 70 Drawing Figures PATENTEDAPR 3 I975 SHEET OBUF 34 mm A PATENTEI] APR 3 I975 SHEET [180F134 PATENTEUAPR3 I973 SHEET USUF 34 FIG. 80
FIG. 8E
APR 3 I975 ","JENTEU SHEET llUF 34 PATENTEDAPR 3 I975 SHEET lZUF 34 PATENTEDAPR 3 1975 SHEET 130F 34 FIG. 12A
FIG. [28
FIG. IZC
PATENTEUAPR 3 I975 SHEET 150F3 1 nmm on 0; 9mm
PATENTEUAPR 3 I875 SHEET lBDF 34 FIG. 13E
FIG. I3F
PATENTEUMRB I975 13,724,728
' SHEET IBM 34

Claims (22)

1. In combination: a. a can end provided with a pour opening, 1. said can end having a can end lapping portion adjacent said pour opening, b. a slide having a pivot on said can end and having a slide lapping portion and a slide sealing portion adjacent said slide lapping portion, 1. said slide lapping portion being adapted to register with said can end lapping portion, c. a pull tab having a connection to said slide, d. engaging means engaging said can end lapping portion to press said can end lapping portion into intimate contact with said slide lapping portion to form a lapped joint, e. a pressure barrier material disposed about the entire periphery of said lapped joint and for sealing to said can end lapping portion at a first predetermined shear strength and to said slide sealing portion at a second predetermined shear strength less than said first predetermined shear strength, and f. said slide being rotatable by said pull tab about said pivot to break the bond between said slide sealing portion and said pressure barrier material adjacent said can end lapping portion to uncover said pour opening.
2. The combination recited in claim 1 wherein said slide has a bulge strength measured in pounds per square inch equal to or less than the bulge strength of said can end.
3. The combination recited in claim 1 wherein said engaging means has a stationary member supporting one member of said slide and said can end and a movable member engaging another member of said slide and said can end.
4. The combination recited in claim 1 wherein said pull tab is integral with said slide.
5. The combination recited in claim 1 wherein said pivot is integral with one of said can end and said slide.
6. The combination recited in claim 1 wherein said pivot is separate from one of said can end and said slide.
7. The combination recited in claim 1 wherein said engaging means is magnetic.
8. The combination recited in claim 1 and having stop means on one of said slide and said can end for engaging the other of said slide and said can end for limiting the movement of said slide.
9. The combination recited in claim 1 wherein said pivot is sealed to said can end by said pressure barrier material.
10. The combination recited in claim 1 wherein said pour opening is radial.
11. The combination recited in claim 1 wherein said pour opening is chordal.
12. The combination recited in claim 1 wherein said pour opening has substantially straight sides.
13. The combination recited in claim 1 wherein said pour opening has arcuate sides.
14. The combination recited in claim 1 wherein said pull tab is of the corrugated type.
15. The combination recited in claim 1 wherein said pulL tab is of the ring type.
16. The combination recited in claim 1 wherein said pull tab is of the serrated type.
17. The combination recited in claim 1 wherein said pull tab is of the projecting type.
18. The combination recited in claim 1 wherein said pull tab is of the waffle type.
19. The combination recited in claim 1 wherein said pull tab has a plurality of protuberances.
20. The combination recited in claim 1 wherein said pull tab has a plurality of cavities.
21. The combination recited in claim 1 wherein said pull tab is of the embossed aperture type.
22. The combination recited in claim 1 wherein said slide is rotatable in either a clockwise or counterclockwise direction.
US00222070A 1970-08-05 1972-01-31 Can end with bonded seal slide Expired - Lifetime US3724728A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6138470A 1970-08-05 1970-08-05
US22207072A 1972-01-31 1972-01-31

Publications (1)

Publication Number Publication Date
US3724728A true US3724728A (en) 1973-04-03

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ID=26741011

Family Applications (1)

Application Number Title Priority Date Filing Date
US00222070A Expired - Lifetime US3724728A (en) 1970-08-05 1972-01-31 Can end with bonded seal slide

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US (1) US3724728A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033449A1 (en) * 1980-02-02 1981-08-12 Fried. Krupp Gesellschaft mit beschränkter Haftung Closure to be opened by tearing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313784A (en) * 1939-10-05 1943-03-16 American Can Co Container
US3308986A (en) * 1964-09-30 1967-03-14 American Can Co Plastisol coatings for easy-open container ends

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313784A (en) * 1939-10-05 1943-03-16 American Can Co Container
US3308986A (en) * 1964-09-30 1967-03-14 American Can Co Plastisol coatings for easy-open container ends

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033449A1 (en) * 1980-02-02 1981-08-12 Fried. Krupp Gesellschaft mit beschränkter Haftung Closure to be opened by tearing

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Legal Events

Date Code Title Description
AS Assignment

Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112