US3795341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy opening container
Assignee: Continental Can Co Inc
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Filing: 1972-07-13
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Granted: 1974-03-05
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Expires: 1992-07-13
Abstract
Abstract An easy opening container including an end closure having a primary score line terminating in spaced ends so as to define a non-detachable tear portion. A secondary score line defining a lever section is formed in the removable panel section and a rigidifying bead is located on the lever section. Upon lifting of the lever section initial severance of the primary score line occurs. A pull tab is attached to the lever section.
Inventors
- 👤 O Ostrem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:57
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
241 words
An end closue for a container, said end closure comprising a panel, a primary score line terminating in spaced ends and defining a removable panel portion bendable about a line passing through said spaced ends an auxiliary score line disposed in said removable panel portion and defining a lever section substantially bisecting said removable panel portion between said spaced ends, said suxiliary score line having spaced legs terminating at ends located adjacent to said primary score line and a bight connecting the other ends of said legs located adjacent said line passing through said spaced ends of said primary score line, and means formed in said panel between said legs of said auxiliary score line to render said lever section substantially rigid adjacent said primary score line, and pull tab means attached to said lever section adjacent to said bight for severing said secondary score line and tilting said lever section upwardly out of the plane of said removable panel portion, said pull tab means extending from and in alignment with said lever section so as to overlie said panel whereby rigidified lever section initiates severance of said primary score line, and upon further upward pulling of said pull tab means said separable panel section is separated from said panel along the length of said prmary score line and bent about said line passing through said spaced ends of said primary score line to provide a pour opening in said panel.
Claim 2
Dependent Claim
241 words
An end closue for a container, said end closure comprising a panel, a primary score line terminating in spaced ends and defining a removable panel portion bendable about a line passing through said spaced ends an auxiliary score line disposed in said removable panel portion and defining a lever section substantially bisecting said removable panel portion between said spaced ends, said suxiliary score line having spaced legs terminating at ends located adjacent to said primary score line and a bight connecting the other ends of said legs located adjacent said line passing through said spaced ends of said primary score line, and means formed in said panel between said legs of said auxiliary score line to render said lever section substantially rigid adjacent said primary score line, and pull tab means attached to said lever section adjacent to said bight for severing said secondary score line and tilting said lever section upwardly out of the plane of said removable panel portion, said pull tab means extending from and in alignment with said lever section so as to overlie said panel whereby rigidified lever section initiates severance of said primary score line, and upon further upward pulling of said pull tab means said separable panel section is separated from said panel along the length of said prmary score line and bent about said line passing through said spaced ends of said primary score line to provide a pour opening in said panel.
Claim 3
Dependent Claim
55 words
The invention as defined in claim 1 wherein said primary score line is generally U-shaped with the open end of said U disposed adjacent the center of said panel, and wherein said auxiliary score line is generally U-shaped with the open end of said U facing the looped end of said U-shaped primary score line.
Claim 4
Dependent Claim
39 words
The invention as defined in claim 1 wherein sai means rendering said lever rigid comprises a bead disposed between said legs of said secondary score and terminating at one end adjacent the looped end of said U-shaped score line.
Claim 5
Dependent Claim
22 words
The invention as defined in claim 3 wherein said pull tab includes a pair of fulcrum legs straddling said secondary score line.
References Cited (Backward Citations)
US3411661A
Cited
US3386614A
Cited
US3442416A
Cited
US3401824A
Cited
US3494141A
Cited
US3643832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |