US3591038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy-open end with abuse-resistant opening tab
Assignee: Primerica Inc
•
Filing: 1969-09-12
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Granted: 1971-07-06
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Expires: 1989-09-12
Abstract
Abstract A scored can end closure is provided with an opening tab which is secured adjacent the score to a panel of the closure by a rivet and is held against vibration during shipment to prevent inadvertent rupture of the score. The opening tab is formed with downwardly curled edges, at least one portion of which is opened up, or made greater in diameter than the adjacent portions, so that it extends downwardly and contacts the end at an area spaced from the rivet, even when the panel is bulged outwardly by internal pressure, and thus dampens the tab against vibration during long distance shipment in freight cars and trucks.
Inventors
- 👤 Alexander Walker Mooring
- 👤 Harley Earl Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:12
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4012
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
A can end closure having a panel, a score formed in said panel and defining a removable portion therein, and an opening tab, one end of said opening tab being secured to said panel adjacent said score by a rivet and the other end of said opening tab comprising a handle end which is spaced above said panel, portions of said handle end being curled downwardly to form an edge curl, at least one area of which is opened up so that it projects downwardly beyond the adjacent portions of the edge curl a sufficient distance to contact the panel and thereby dampen the vibrations of said opening tab relative to said panel and prevent fracture of said score when the can end is subjected to abuse.
Claim 2
Dependent Claim
127 words
A can end closure having a panel, a score formed in said panel and defining a removable portion therein, and an opening tab, one end of said opening tab being secured to said panel adjacent said score by a rivet and the other end of said opening tab comprising a handle end which is spaced above said panel, portions of said handle end being curled downwardly to form an edge curl, at least one area of which is opened up so that it projects downwardly beyond the adjacent portions of the edge curl a sufficient distance to contact the panel and thereby dampen the vibrations of said opening tab relative to said panel and prevent fracture of said score when the can end is subjected to abuse.
Claim 3
Dependent Claim
40 words
The can end closure of claim 1 wherein said handle end comprises a pull ring having its inner edge defined by said edge curl, and wherein the portion of said edge curl which is nearest said rivet is opened up.
Claim 4
Dependent Claim
58 words
The can end closure of claim 2, wherein the outer edge of said handle end is formed into a downwardly projecting edge curl which extends on adjacent opposite sides of said rivet, and wherein the terminal edge portions of said edge curl are bent downwardly into contact with said end panel to prevent lateral rocking of said tab.
References Cited (Backward Citations)
US3432067A
Cited
US3404801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |