Patent US20030097036A1 successfully refreshed from Google Patents.
US3181720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure or vacuum release closure for a container or the like
Assignee: Armour and Co
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Filing: 1962-07-05
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Granted: 1965-05-04
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 Norman M Cassie
- 👤 Leroy C Hefmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/0435; B65D41/045; B65D1/00; B65D1/02; B65D1/0223; B65D1/023; B65D1/0246; B65D51/00; B65D51/16; B65D51/1633; B65D51/1661
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN COMBINATION, A CONTAINER HAVING A WALLED PORTION TERMINATING IN A CIRCUMFERENTIAL LIP DEFINING AN OPENING TO SAID CONTAINER; A CAP FOR SEALING SAID OPENING, A LINER OF FOAM MATERIAL FITTED ON THE INSIDE OF SAID CAP, AND A NOTCH FORMED IN SAID LIP, SAID NOTCH BEING SHAPED FOR VARYING THE DENSITY OF THE LINER WITHIN SAID NOTCH WHEN SAID CAP IS DISPOSED IN SEALING RELATIONSHIP ON SAID LIP WHEREBY THE VARIATION IN THE DENSITY OF SAID LINER PERMITS GASES TO VENT FROM INSIDE OUT OR FROM OUTSIDE INTO THE CONTAINER DEPENDING ON THE RELATIVE PRESSURE WITHIN AND WITHOUT AND CONTAINER.
Claim 2
Dependent Claim
101 words
IN COMBINATION, A CONTAINER HAVING A WALLED PORTION TERMINATING IN A CIRCUMFERENTIAL LIP DEFINING AN OPENING TO SAID CONTAINER; A CAP FOR SEALING SAID OPENING, A LINER OF FOAM MATERIAL FITTED ON THE INSIDE OF SAID CAP, AND A NOTCH FORMED IN SAID LIP, SAID NOTCH BEING SHAPED FOR VARYING THE DENSITY OF THE LINER WITHIN SAID NOTCH WHEN SAID CAP IS DISPOSED IN SEALING RELATIONSHIP ON SAID LIP WHEREBY THE VARIATION IN THE DENSITY OF SAID LINER PERMITS GASES TO VENT FROM INSIDE OUT OR FROM OUTSIDE INTO THE CONTAINER DEPENDING ON THE RELATIVE PRESSURE WITHIN AND WITHOUT AND CONTAINER.
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) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |