US3315700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular jacketed double bellows valve
Assignee: Individual
•
Filing: 1964-02-03
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Granted: 1967-04-25
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Expires: 1984-02-03
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:37
CPC Classifications
F; F16; F16K; F16K51/00; F16K51/02; F16K41/00; F16K41/10; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A VALVE COMPRISING A VALVE BODY HAVING INLET AND OUTLET CHAMBERS AND A VALVE SEAT THEREBETWEEN, A VALVE MEMBER MOVABLE TOWARD AND AWAY FROM SAID SEAT, A CYLINDER COMMUNICATING WITH ONE OF SAID CHAMBERS, A PISTON ROD FOR SAID VALVE MEMBER RECIPROCABLE IN SAID CYLINDER, A BELLOWS SURROUNDING SAID PISTON ROD HAVING ITS ENDS SEALED TO SAID VALVE AND THE REMOTE END OF SAID CYLINDER, A STATIC CHAMBER SURROUNDING SAID CYLINDER AND VALVE CHAMBERS COMMUNICATING WITH SAID CYLINDER, A SECOND BELLOWS SURROUNDING SAID FIRST BELLOWS IN SPACED RELATION THERETO, THERE BEING A PORT IN SAID CYLINDER INTERCONNECTING SAID STATIC CHAMBER AND THE SPACE BETWEEN SAID BELLOWS.
Claim 2
Dependent Claim
106 words
A VALVE COMPRISING A VALVE BODY HAVING INLET AND OUTLET CHAMBERS AND A VALVE SEAT THEREBETWEEN, A VALVE MEMBER MOVABLE TOWARD AND AWAY FROM SAID SEAT, A CYLINDER COMMUNICATING WITH ONE OF SAID CHAMBERS, A PISTON ROD FOR SAID VALVE MEMBER RECIPROCABLE IN SAID CYLINDER, A BELLOWS SURROUNDING SAID PISTON ROD HAVING ITS ENDS SEALED TO SAID VALVE AND THE REMOTE END OF SAID CYLINDER, A STATIC CHAMBER SURROUNDING SAID CYLINDER AND VALVE CHAMBERS COMMUNICATING WITH SAID CYLINDER, A SECOND BELLOWS SURROUNDING SAID FIRST BELLOWS IN SPACED RELATION THERETO, THERE BEING A PORT IN SAID CYLINDER INTERCONNECTING SAID STATIC CHAMBER AND THE SPACE BETWEEN SAID BELLOWS.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |