US3138173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pressure and vacuum cap
Assignee: Remington Arms Co LLC
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Filing: 1962-08-23
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Granted: 1964-06-23
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Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Robert B Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406; F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; F16K15/142; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7779; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7889; Y10T292/00; Y10T292/20; Y10T292/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PRESSURE AND VACUUM RELIEF VALVE COMPRISING CAP MEANS HAVING AN OPENING THEREIN, PLUG MEANS POSITIONED IN SAID OPENING, MEANS TO RETAIN SAID PLUG MEANS IN SAID OPENING, SAID PLUG MEANS INCLUDING A PLURALITY OF PORT MEANS, ELASTOMERIC MEANS SURROUNDING SAID PORT MEANS WHEREUPON CERTAIN OF SAID PORT MEANS ARE IN CONTINUOUS CONTACT WITH AN INTERNAL ATMOSPHERE AND CERTAIN OTHER PORT MEANS ARE IN CONTINUOUS CONTACT WITH AN EXTERNAL ATMOSPHERE, SAID ELASTOMERIC MEANS AND SAID PORT MEANS BEING ADAPTED TO ACT AS TWO-WAY VALVE MEANS WHEREBY UPON EXCESSIVE VACUUM OR EXCESSIVE PRESSURE IN SAID INTERNAL ATMOSPHERE, SAID ELASTOMERIC MEANS IS ACTUATED TO VENT SAID INTERNAL ATMOSPHERE TO THE EXTERNAL ATMOSPHERE AND THUS NORMALIZE THE PRESSURE IN THE INTERNAL ATMOSPHERE.
Claim 2
Dependent Claim
119 words
A PRESSURE AND VACUUM RELIEF VALVE COMPRISING CAP MEANS HAVING AN OPENING THEREIN, PLUG MEANS POSITIONED IN SAID OPENING, MEANS TO RETAIN SAID PLUG MEANS IN SAID OPENING, SAID PLUG MEANS INCLUDING A PLURALITY OF PORT MEANS, ELASTOMERIC MEANS SURROUNDING SAID PORT MEANS WHEREUPON CERTAIN OF SAID PORT MEANS ARE IN CONTINUOUS CONTACT WITH AN INTERNAL ATMOSPHERE AND CERTAIN OTHER PORT MEANS ARE IN CONTINUOUS CONTACT WITH AN EXTERNAL ATMOSPHERE, SAID ELASTOMERIC MEANS AND SAID PORT MEANS BEING ADAPTED TO ACT AS TWO-WAY VALVE MEANS WHEREBY UPON EXCESSIVE VACUUM OR EXCESSIVE PRESSURE IN SAID INTERNAL ATMOSPHERE, SAID ELASTOMERIC MEANS IS ACTUATED TO VENT SAID INTERNAL ATMOSPHERE TO THE EXTERNAL ATMOSPHERE AND THUS NORMALIZE THE PRESSURE IN THE INTERNAL ATMOSPHERE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |