US3970211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-removable tab connection
Assignee: Continental Can Co Inc
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Filing: 1975-04-21
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Granted: 1976-07-20
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Expires: 1995-04-21
Abstract
Abstract An end closure having a non-detachable flap partially severable from the end panel to provide an opening. The flap is recessed below the remainder of the panel and is broken away by a tab which fits into the recess. The tab is adapted to be pushed inwardly and, after rupturing the score between the end panel and the flap, functions to swing the flap inwardly about a hinge formed by an unscored area of the flap perimeter. The invention is primarily directed to a means of attaching the tab to the flap so as to provide a lost motion enabling the movement of the flap relative to the tab during the inward swing.
Inventors
- 👤 George D. LaCross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:30
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
An improved non-detachable easy-opening end closure for a can or similar container comprising an end panel, a score formed in said end panel and defining therein a flap element adapted to be torn away from said end panel to provide an opening, a tab element superposed with respect to said flap, flap retention means for retaining said flap attached to said end closure subsequent to opening and tab attachment means attaching said tab to said flap, said attachment means providing a lost motion between said flap element and said tab element during opening of said end closure.
Claim 2
Dependent Claim
97 words
An improved non-detachable easy-opening end closure for a can or similar container comprising an end panel, a score formed in said end panel and defining therein a flap element adapted to be torn away from said end panel to provide an opening, a tab element superposed with respect to said flap, flap retention means for retaining said flap attached to said end closure subsequent to opening and tab attachment means attaching said tab to said flap, said attachment means providing a lost motion between said flap element and said tab element during opening of said end closure.
Claim 3
Dependent Claim
144 words
An improved non-detachable easy-opening end closure for a can or similar container comprising an end panel, a score formed in said end panel and defining therein a flap element adapted to be torn away from said end panel to provide an opening, a tab element superposed with respect to said flap, flap retention means for retaining said flap attached to said end closure subsequent to opening, and tab attachment means attaching said tab to said flap, said attachment means providing a lost motion between said flap element and said tab element during opening of said end closure, said tab element including a substantially flat tether and said tab attachment means comprising a rivet integrally formed in said flap and a slot formed in said tether, said rivet co-operating with said slot to permit said lost motion between said tab element and said flap element.
Claim 4
Dependent Claim
144 words
An improved non-detachable easy-opening end closure for a can or similar container comprising an end panel, a score formed in said end panel and defining therein a flap element adapted to be torn away from said end panel to provide an opening, a tab element superposed with respect to said flap, flap retention means for retaining said flap attached to said end closure subsequent to opening, and tab attachment means attaching said tab to said flap, said attachment means providing a lost motion between said flap element and said tab element during opening of said end closure, said tab element including a substantially flat tether and said tab attachment means comprising a rivet integrally formed in said flap and a slot formed in said tether, said rivet co-operating with said slot to permit said lost motion between said tab element and said flap element.
Claim 5
Dependent Claim
14 words
The invention according to claim 2, wherein said slot extends lengthwise of said tether.
Claim 6
Dependent Claim
17 words
The invention according to claim 3, wherein said rivet is disposed substantially centrally on said flap element.
Claim 7
Dependent Claim
140 words
An improved non-detachable easy-opening end closure for a can or similar container comprising an end panel, a score formed in said end panel and defining therein a flap element adapted to be torn away from said end panel to provide an opening, a tab element superposed with respect to said flap, flap retention means for retaining said flap attached to said end closure subsequent to opening, and tab attachment means attaching said tab to said flap, said attachment means providing a lost motion between said flap element and said tab element during opening of said end closure, said attachment means comprising a rivet integrally formed in one of said elements and a channel formed in the other of said elements, said rivet co-operating with said channel to permit a lost motion between said elements attendant to opening said flap element.
Claim 8
Dependent Claim
140 words
An improved non-detachable easy-opening end closure for a can or similar container comprising an end panel, a score formed in said end panel and defining therein a flap element adapted to be torn away from said end panel to provide an opening, a tab element superposed with respect to said flap, flap retention means for retaining said flap attached to said end closure subsequent to opening, and tab attachment means attaching said tab to said flap, said attachment means providing a lost motion between said flap element and said tab element during opening of said end closure, said attachment means comprising a rivet integrally formed in one of said elements and a channel formed in the other of said elements, said rivet co-operating with said channel to permit a lost motion between said elements attendant to opening said flap element.
Claim 9
Dependent Claim
23 words
The invention according to claim 5, wherein said rivet is formed in said tether and said channel is formed in said flap element.
Claim 10
Dependent Claim
24 words
The invention according to claim 2, wherein said flap is non-removably attached to said end panel by an unscored area in the flap perimeter.
Claim 11
Dependent Claim
14 words
The invention according to claim 7, wherein said unscored area lies beneath said tether.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |