US3957172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End panel for nested tab safety closure
Assignee: Continental Can Co Inc
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Filing: 1975-07-14
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Granted: 1976-05-18
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Expires: 1995-07-14
Abstract
Abstract An improved child-resistant self-opening end closure of the type wherein the tab is nested between end panel protrusions which obstruct access to the tab ring and prevent grasping and lifting of the tab to open the container. The end panel is formed with a recess beneath the nose portion of the tab which provides maximum clearance between the tab and the end panel, whereby depressing the nose portion of the tab causes the ring portion to tilt upwardly sufficiently to permit it to be grasped.
Inventors
- 👤 Gary K. Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:55
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
An improved child-resistant safety closure for a can or similar container comprising an end panel and a pull tab secured thereto and having a nose portion and a handle portion, said end panel having protrusions obstructing grasping of said handle portion, said pull tab being substantially planar and having a rivet well accommodating tilting said pull tab relative to said end panel, the improvement comprising: tilt enhancing recess means formed in said end panel beneath the tab whereby said pull tab may be tilted into the recess means in order that said handle portion may be grasped, thereby permitting opening of said container.
Claim 2
Dependent Claim
103 words
An improved child-resistant safety closure for a can or similar container comprising an end panel and a pull tab secured thereto and having a nose portion and a handle portion, said end panel having protrusions obstructing grasping of said handle portion, said pull tab being substantially planar and having a rivet well accommodating tilting said pull tab relative to said end panel, the improvement comprising: tilt enhancing recess means formed in said end panel beneath the tab whereby said pull tab may be tilted into the recess means in order that said handle portion may be grasped, thereby permitting opening of said container.
Claim 3
Dependent Claim
20 words
The invention as described in claim 1, wherein said recess means lies beneath said nose portion of said pull tab.
Claim 4
Dependent Claim
26 words
The invention as described in claim 2, wherein said end panel has a score defining an opening flap therein and said score traverses said recess means.
Claim 5
Dependent Claim
26 words
The invention as described in claim 3, wherein said recess means comprises a base and a sidewall and a portion of said score traverses said base.
Claim 6
Dependent Claim
39 words
The invention as described in claim 4, wherein a piercing member, for breaking said score, is formed on said nose portion of said pull tab and said portion of said score in said base lies beneath said piercing member.
Claim 7
Dependent Claim
19 words
The invention as described in claim 5, wherein said base slopes downwardly toward the periphery of said end panel.
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) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |