US3273590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive valve having a uniformly progressive and smooth opening characteristic
Assignee: Bendix Corp
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Filing: 1964-06-04
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Granted: 1966-09-20
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Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 Stephen G Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:55
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; F16K17/087; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A FLUID PRESSURE RESPONSIVE VALVE DEVICE COMPRISING: A HOUSING MEMBER HAVING WALLS DEFINING A FLUID CHAMBER, A FLUID SUPPLY CONDUIT CONNECTED TO SAID HOUSING FOR SUPPLYING AN INPUT FLUID FLOW TO SAID FLUID CHAMBER, A FLUID OUTLET CONDUIT CONNECTED TO SAID HOUSING, A VALVE MEMBER DISPOSED WITHIN SAID FLUID CHAMBER FOR CONTROLLING FLUID FLOW FROM SAID FLUID CHAMBER TO SAID OUTLET CONDUIT, SAID VALVE MEMBER HAVING FIRST AND SECOND ANNULAR RADIALLY SPACED VALVE LANDS FORMING AN INTERMEDIATE ANNULAR VALVE CHAMBER THEREBETWEEN, A BELLOWS MEMBER HAVING A FIRST END FIXEDLY SECURED TO SAID HOUSING, SAID BELLOWS HAVING A SECOND FREE END CONNECTED TO SAID VALVE MEMBER, FIRST PASSAGE MEANS FORMED IN SAID VALVE MEMBER, FLUIDLY CONNECTING SAID ANNULAR VALVE CHAMBER AND THE INTERIOR OF SAID BELLOWS, SECOND PASSAGE MEANS FLUIDLY CONNECTING SAID FLUID OUTLET CONDUIT AND THE INTERIOR OF SAID BELLOWS.
Claim 2
Dependent Claim
140 words
A FLUID PRESSURE RESPONSIVE VALVE DEVICE COMPRISING: A HOUSING MEMBER HAVING WALLS DEFINING A FLUID CHAMBER, A FLUID SUPPLY CONDUIT CONNECTED TO SAID HOUSING FOR SUPPLYING AN INPUT FLUID FLOW TO SAID FLUID CHAMBER, A FLUID OUTLET CONDUIT CONNECTED TO SAID HOUSING, A VALVE MEMBER DISPOSED WITHIN SAID FLUID CHAMBER FOR CONTROLLING FLUID FLOW FROM SAID FLUID CHAMBER TO SAID OUTLET CONDUIT, SAID VALVE MEMBER HAVING FIRST AND SECOND ANNULAR RADIALLY SPACED VALVE LANDS FORMING AN INTERMEDIATE ANNULAR VALVE CHAMBER THEREBETWEEN, A BELLOWS MEMBER HAVING A FIRST END FIXEDLY SECURED TO SAID HOUSING, SAID BELLOWS HAVING A SECOND FREE END CONNECTED TO SAID VALVE MEMBER, FIRST PASSAGE MEANS FORMED IN SAID VALVE MEMBER, FLUIDLY CONNECTING SAID ANNULAR VALVE CHAMBER AND THE INTERIOR OF SAID BELLOWS, SECOND PASSAGE MEANS FLUIDLY CONNECTING SAID FLUID OUTLET CONDUIT AND THE INTERIOR OF SAID BELLOWS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |