US3172558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with improved easy-open end
Assignee: Primerica Inc
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Filing: 1963-11-18
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Granted: 1965-03-09
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Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Wilkinson Harlen Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:06
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/401; B65D17/4011
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AN EASY-OPEN CONTAINER COMPRISING: A TUBULAR CONTAINER BODY; AND A COVER SECURED TO SAID CONTAINER BODY; SAID COVER HAVING A PERIPHERAL TEAR STRIP FROMED BY A PAIR OF SPACED SCORE LINES WHICH EXTEND SUBSTANTIALLY AROUND THE COVER BUT WHICH MERGE TOGETHER SHORT OF COMPLETELY SURROUNDING THE COVER PERIPHERY THUS LEAVING A SMALL PERIPHERAL HINGE OVER WHICH THE TEAR STRIP DOES NOT EXTEND; SAID HINGE HAVING AN AREA OF STRESS CONCENTRATION SET UP THEREIN WHEREBY, WHEN SAID TEAR STRIP IS REMOVED, THAT PORTION OF THE COVER RETAINED BY SAID HINGE IS BIASED UPWARD.
Claim 2
Dependent Claim
92 words
AN EASY-OPEN CONTAINER COMPRISING: A TUBULAR CONTAINER BODY; AND A COVER SECURED TO SAID CONTAINER BODY; SAID COVER HAVING A PERIPHERAL TEAR STRIP FROMED BY A PAIR OF SPACED SCORE LINES WHICH EXTEND SUBSTANTIALLY AROUND THE COVER BUT WHICH MERGE TOGETHER SHORT OF COMPLETELY SURROUNDING THE COVER PERIPHERY THUS LEAVING A SMALL PERIPHERAL HINGE OVER WHICH THE TEAR STRIP DOES NOT EXTEND; SAID HINGE HAVING AN AREA OF STRESS CONCENTRATION SET UP THEREIN WHEREBY, WHEN SAID TEAR STRIP IS REMOVED, THAT PORTION OF THE COVER RETAINED BY SAID HINGE IS BIASED UPWARD.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |