Patent US4003496A successfully refreshed from Google Patents.
US4003496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End closure for container
Assignee: Continental Group Inc
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Filing: 1976-02-17
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Granted: 1977-01-18
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Expires: 1996-02-17
Abstract
Abstract An easy-opening end closure of the full opening type is formed with the flap-defining score-line located in the vertical chuck wall whereat the cutedge, of that portion of the closure remaining attached to the container after opening, is shielded by the container sidewall. The disclosure also relates to a method for forming the above described easy-opening end closure wherein the scoreline is formed in a horizontal portion of the end panel, said portion thereafter being upset to a substantially vertical position whereat it comprises a part of the chuck wall.
Inventors
- 👤 Obert M. Ostrem
- 👤 Donald F. Kulikowski
- 👤 Sam C. Pulciani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:04
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
An improved end panel for an easy-opening end closure of the full opening type comprising a central web, and a peripheral portion, said peripheral portion including a substantially axial chuckwall for placement in close association with the sidewall of a can or similar container, the improvement comprising a scoreline disposed in the outer surface of said chuckwall and formed and arranged to provide a removable flap which upon opening leaves a severed sharp edge on the chuckwall offset from the inner surface of said chuckwall toward the container sidewall subsequent to opening of the closure in a downwardly axial position.
Claim 2
Dependent Claim
100 words
An improved end panel for an easy-opening end closure of the full opening type comprising a central web, and a peripheral portion, said peripheral portion including a substantially axial chuckwall for placement in close association with the sidewall of a can or similar container, the improvement comprising a scoreline disposed in the outer surface of said chuckwall and formed and arranged to provide a removable flap which upon opening leaves a severed sharp edge on the chuckwall offset from the inner surface of said chuckwall toward the container sidewall subsequent to opening of the closure in a downwardly axial position.
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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |