US4231487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pull tab having memory for effecting rolling up of tab and removable panel portion
Assignee: Continental Group Inc
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Filing: 1979-08-14
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Granted: 1980-11-04
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Expires: 1999-08-14
Abstract
Abstract This disclosure relates to a pull tab for removing a removable panel portion of an easy opening container and thereafter effecting the folding up of the removed removable panel portion in an out-of-the-way position with respect to a resultant dispensing opening and with the removable panel portion being encased within the folded up tab. The tab is formed of plastics material which is so molded, preferably by an injection molding process, so as to have a memory in the form of a plurality of transversely extending memory fold lines. The memory fold lines are operable progressively to fold or roll up the tab in pup tent style to assume a triangular cross section. The removable panel portion is provided with transverse fold lines in alignment with the memory fold lines so as to be folded up together with and within the tab. The tab is permanently secured to the container panel.
Inventors
- 👤 Gary K. Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:11
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/12; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
51 words
A pull tab for easy opening containers, said pull tab comprising an anchoring portion, an intermediate securing portion and a grip portion, and linear memory means extending transversely of said pull tab in said securing portion for effecting automatic folding of said securing portion to a folded out-of-the-way position when released.
Claim 2
Dependent Claim
51 words
A pull tab for easy opening containers, said pull tab comprising an anchoring portion, an intermediate securing portion and a grip portion, and linear memory means extending transversely of said pull tab in said securing portion for effecting automatic folding of said securing portion to a folded out-of-the-way position when released.
Claim 3
Dependent Claim
28 words
A pull tab according to claim 1 wherein said grip portion also has memory means for effecting folding of said grip portion when said grip portion is released.
Claim 4
Dependent Claim
36 words
A pull tab according to claim 2 wherein said memory means of said grip portion are aligned with said memory means of said securing portion for effecting folding of said grip portion within said receiving portion.
Claim 5
Dependent Claim
28 words
A pull tab according to claim 2 together with means releasably securing said grip portion to said securing portion normally to prevent separate folding of said grip portion.
Claim 6
Dependent Claim
24 words
A pull tab according to claim 3 wherein said anchoring portion also has memory means for folding said anchoring portion about said securing portion.
Claim 7
Dependent Claim
24 words
A pull tab according to claim 1 wherein said anchoring portion also has memory means for folding said anchoring portion about said securing portion.
Claim 8
Dependent Claim
67 words
A pull tab according to claim 1 wherein said tab is secured to an easy opening container panel including a removable panel portion, said securing portion overlies and is secured to said removable panel portion, and said removable panel portion has lines of weakness aligned with said securing portion memory means for folding of said removable panel portion when removed by and together with said securing portion.
Claim 9
Dependent Claim
29 words
A pull tab according to claim 7 wherein said removable panel portion is integrally formed with said easy opening container panel and is defined by a line of weakness.
Claim 10
Dependent Claim
35 words
A pull tab according to claim 7 wherein said removable panel portion has a starting end, and fastener means permanently secure said securing portion and said grip portion to said removable panel portion starting end.
Claim 11
Dependent Claim
30 words
A pull tab according to claim 9 wherein other fastener means permanently secure said anchoring portion to said easy opening container panel remote from said removable panel portion starting end.
Claim 12
Dependent Claim
20 words
A pull tab according to claim 9 wherein said securing panel is further overall bonded to said removable panel portion.
Claim 13
Dependent Claim
28 words
A pull tab according to claim 9 wherein said grip portion also has memory means for effecting folding of said grip portion when said grip portion is released.
Claim 14
Dependent Claim
28 words
A pull tab according to claim 12 together with means releasably securing said grip portion to said securing portion normally to prevent separate folding of said grip portion.
Claim 15
Dependent Claim
49 words
A pull tab according to claim 12 wherein said memory means of said grip portion are aligned with said memory means of said securing portion and said removable panel portion lines of weakness for effecting folding of said grip portion within said securing portion and said removable panel portion.
Claim 16
Dependent Claim
24 words
A pull tab according to claim 14 wherein said anchoring portion also has memory means for folding said anchoring portion about said securing portion.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |