Patent US371419A successfully refreshed from Google Patents.
Patent US3286874A successfully refreshed from Google Patents.
US3286874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy opening can
Assignee: Continental Can Co Inc
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Filing: 1965-02-12
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Granted: 1966-11-22
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Expires: 1985-02-12
Abstract
No abstract record available.
Inventors
- 👤 John S Bozek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:11
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN EASY OPENING CAN END COMPRISING AN UPSTANDING CHUCK WALL AND AN END PANEL, A PAIR OF INWARDLY CONVERGING WEAKENING LINES FORMED IN SAID END PANEL AND IN PART DEFINING A TRIANGULAR TEAR STRIP, SAID CAN END BEING RECESSED BETWEEN SAID CHUCK WALL AND SAID END PANEL IN ALIGNMENT WITH SAID TEAR STRIP TO DEFINE AN UPSTANDING WALL AROUND SAID END PANEL AND IN OPPOSED SPACED RELATION TO SAID CHUCK WALL, AND A GENERALLY CIRCUMFERENTIALLY EXTENDING THIRD WEAKENING LINE IN SAID UPSTANDING WALL AND EXTENDING BETWEEN THE WIDELY SPACED ENDS OF SAID PAIR OF WEAKENING LINES WHEREBY SAID CAN END MAY BE RUPTURED ALONG SAID THIRD WEAKENING LINE AND SAID TEAR STRIP PRIED OUT OF THE PLANE OF SAID END PANEL.
Claim 2
Dependent Claim
121 words
AN EASY OPENING CAN END COMPRISING AN UPSTANDING CHUCK WALL AND AN END PANEL, A PAIR OF INWARDLY CONVERGING WEAKENING LINES FORMED IN SAID END PANEL AND IN PART DEFINING A TRIANGULAR TEAR STRIP, SAID CAN END BEING RECESSED BETWEEN SAID CHUCK WALL AND SAID END PANEL IN ALIGNMENT WITH SAID TEAR STRIP TO DEFINE AN UPSTANDING WALL AROUND SAID END PANEL AND IN OPPOSED SPACED RELATION TO SAID CHUCK WALL, AND A GENERALLY CIRCUMFERENTIALLY EXTENDING THIRD WEAKENING LINE IN SAID UPSTANDING WALL AND EXTENDING BETWEEN THE WIDELY SPACED ENDS OF SAID PAIR OF WEAKENING LINES WHEREBY SAID CAN END MAY BE RUPTURED ALONG SAID THIRD WEAKENING LINE AND SAID TEAR STRIP PRIED OUT OF THE PLANE OF SAID END PANEL.
References Cited (Backward Citations)
US2210225A
Cited
US2547059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |