Patent US3556336A successfully refreshed from Google Patents.
US3556336A
Expired / Lapsed
US
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Tear-off container closure
Assignee: Alcoa Corp
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Filing: 1969-01-14
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Granted: 1971-01-19
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Expires: 1989-01-14
Abstract
Abstract A closure having a top portion with a recessed central panel and a peripheral rim, and a skirt depending from the rim, and having a tear strip defined by scoring divisive of the top portion and extending into the closure skirt, the tear strip having an embossed island in the recessed central panel portion thereof adjacent the rim to aid in severing the tear strip from the top portion and splitting said skirt for removal of the closure from a container.
Inventors
- 👤 Jackie A Coop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:23
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/40; B65D51/00; B65D51/18; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0015; B65D2251/0068; B65D2251/0078
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
A sheet metal closure comprising a top portion with a receSsed central panel and a rim around the panel, and a skirt depending from said rim, the closure further having a tear strip defined by scoring divisive of said top portion and extending into the closure skirt, said tear strip having an upwardly embossed island in the recessed panel portion thereof adjacent said rim and traversing a chordal line through the intersections of the sides of said tear strip with the periphery of said recessed central panel to aid in severing said tear strip from said top portion for removal of the closure from a container.
Claim 2
Dependent Claim
106 words
A sheet metal closure comprising a top portion with a receSsed central panel and a rim around the panel, and a skirt depending from said rim, the closure further having a tear strip defined by scoring divisive of said top portion and extending into the closure skirt, said tear strip having an upwardly embossed island in the recessed panel portion thereof adjacent said rim and traversing a chordal line through the intersections of the sides of said tear strip with the periphery of said recessed central panel to aid in severing said tear strip from said top portion for removal of the closure from a container.
Claim 3
Dependent Claim
52 words
A closure as set forth in claim 1 in which said embossed island extends from a relatively wide sector of said tear strip located in said recessed central panel outwardly of said chordal line inwardly towards a relatively narrow sector of said tear strip near the center of said recessed central 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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |