US3869063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy opening closure for containers
Assignee: Ardagh Metal Packaging Germany GmbH
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Filing: 1973-05-14
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Granted: 1975-03-04
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Expires: 1993-05-14
Abstract
Abstract This disclosure relates to an easy opening closure for containers of the type having a displaceable panel portion defined by a weakening line and wherein a pull tab is secured to the displaceable panel portion for effecting the rupture of the closure along the weakening line and the displacement of the panel portion thereof. A pull tab is secured to the displaceable panel portion by means of securing means such as a rivet and is subject to turning so as to render the same ineffective. The pull tab is interlocked with the displaceable panel portion by a simple punching operation which forms a projection on the underside of the pull tab and a like configurated socket in the panel portion receiving the projection.
Inventors
- 👤 Kurt Himstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:16
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
199 words
An easy opening closure for containers, said closure comprising a panel, at least one weakening line in said panel defining a displaceable panel portion, a pull tab for effecting the rupture of said panel along said weakening line and the displacement of said panel portion, means securing said pull tab to said panel portion with a part of said pull tab lying flatly against said panel portion, and interlocking means of the projection and socket type in said pull tab part and said panel portion for preventing rotational movement of said pull tab relative to said panel portion about said securing means, said interlocking means having the appearance of being simultaneously formed, said pull tab having a nose generally alignable with said weakening line and a grip portion, said nose and said grip portion being disposed on opposite sides of said securing means, and said interlocking means being disposed between a center of said securing means and said nose and projection being on said pull tab part and said socket being in said panel portion wherein said interlocking means are more forcibly engaged when said grip portion is moved away from said panel portion in a container opening operation.
Claim 2
Dependent Claim
199 words
An easy opening closure for containers, said closure comprising a panel, at least one weakening line in said panel defining a displaceable panel portion, a pull tab for effecting the rupture of said panel along said weakening line and the displacement of said panel portion, means securing said pull tab to said panel portion with a part of said pull tab lying flatly against said panel portion, and interlocking means of the projection and socket type in said pull tab part and said panel portion for preventing rotational movement of said pull tab relative to said panel portion about said securing means, said interlocking means having the appearance of being simultaneously formed, said pull tab having a nose generally alignable with said weakening line and a grip portion, said nose and said grip portion being disposed on opposite sides of said securing means, and said interlocking means being disposed between a center of said securing means and said nose and projection being on said pull tab part and said socket being in said panel portion wherein said interlocking means are more forcibly engaged when said grip portion is moved away from said panel portion in a container opening operation.
Claim 3
Dependent Claim
19 words
The closure of claim 1 wherein said interlocking means have the appearance of being formed by a center punch.
Claim 4
Dependent Claim
15 words
The closure of claim 1 wherein said interlocking means are disposed adjacent said securing means.
Claim 5
Dependent Claim
22 words
The closure of claim 1 wherein said interlocking means are disposed adjacent said securing means on opposite sides thereof in like positions.
Claim 6
Dependent Claim
47 words
The closure of claim 1 wherein said pull tab is of the type having a cut line therein defining a hinge facilitating pivoting of said pull tab relative to said panel portion, and said interlocking means being formed in said pull tab part bridging said cut line.
Claim 7
Dependent Claim
21 words
The closure of claim 5 wherein said interlocking meaNs are disposed on opposite sides of said securing means in like positions.
Claim 8
Dependent Claim
64 words
The closure of claim 1 wherein said pull tab includes an integral lug in part separated from the remainder of said pull tab by a cut line defining a hinge between said lug and the remainder of said pull tab facilitating pivoting of said pull tab relative to said panel portion, and at least a part of said projection being formed in said lug.
Claim 9
Dependent Claim
13 words
The closure of claim 7 wherein said cut line extends through said projection.
Claim 10
Dependent Claim
21 words
The closure of claim 7 wherein said interlocking means are disposed on opposite sides of said securing means in like positions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |