US3140648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-blast valve
Assignee: Individual
•
Filing: 1962-01-31
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Granted: 1964-07-14
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Expires: 1982-01-31
Abstract
No abstract record available.
Inventors
- 👤 Bergman Sten Gosta Ariel
- 👤 Stalfors John Bertil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/006; A; A62; A62B; A62B13/00; Y; Y10; Y10S; Y10S454/00; Y10S454/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
MEANS FOR PROTECTING AIR VENTILATING AND FLUE GAS CHANNELS AGAINST AIR SHOCK WAVES, COMPRISING, IN COMBINATION: (A) MEANS DEFINING A RECTILINEAR INFLOW CHANNEL FOR RECEIVING SHOCK WAVES ENTERING AT ONE END OF SAID INFLOW CHANNEL, SAID END BEING OPEN TO THE ATMOSPHERE; (B) MEANS PROVIDING AN ENLARGED CHAMBER IN SAID INFLOW CHANNEL REMOTE FROM SAID INFLOW CHANNEL ONE END AND INCLUDING MEANS FORMING A VALVE SEAT AT THE END OF SAID CHAMBER REMOTE FROM SAID INFLOW CHANNEL ONE END; (C) A CONCAVE-CONVEX VALVE BODY LOCATED IN SAID ENLARGED CHAMBER WITH ITS CONCAVE FACE FACING SAID INFLOW CHANNEL ONE END; (D) MEANS MOUNTING SAID VALVE MEMBER FOR AXIAL MOVEMENT IN SAID CHAMBER TOWARD AND AWAY FROM SAID SEAT;
Claim 2
Dependent Claim
117 words
MEANS FOR PROTECTING AIR VENTILATING AND FLUE GAS CHANNELS AGAINST AIR SHOCK WAVES, COMPRISING, IN COMBINATION: (A) MEANS DEFINING A RECTILINEAR INFLOW CHANNEL FOR RECEIVING SHOCK WAVES ENTERING AT ONE END OF SAID INFLOW CHANNEL, SAID END BEING OPEN TO THE ATMOSPHERE; (B) MEANS PROVIDING AN ENLARGED CHAMBER IN SAID INFLOW CHANNEL REMOTE FROM SAID INFLOW CHANNEL ONE END AND INCLUDING MEANS FORMING A VALVE SEAT AT THE END OF SAID CHAMBER REMOTE FROM SAID INFLOW CHANNEL ONE END; (C) A CONCAVE-CONVEX VALVE BODY LOCATED IN SAID ENLARGED CHAMBER WITH ITS CONCAVE FACE FACING SAID INFLOW CHANNEL ONE END; (D) MEANS MOUNTING SAID VALVE MEMBER FOR AXIAL MOVEMENT IN SAID CHAMBER TOWARD AND AWAY FROM SAID SEAT;
References Cited (Backward Citations)
US2022143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |