Patent US212515A successfully refreshed from Google Patents.
Patent US3229715A successfully refreshed from Google Patents.
US3229715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control valves
Assignee: Gullick Ltd
•
Filing: 1963-01-21
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Granted: 1966-01-18
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Donald T Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:39
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0446; F16K17/0453; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F16K15/14; F16K15/148; F16K17/0493; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7904; Y10T137/7922; Y10T137/7923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PRESSURE RELIEF VALVE COMPRISING A VALVE BODY HAVING INLET AND OUTLET PORT MEANS THEREIN, A CLOSURE PART IN SAID BODY FOR SAID OUTLET PORT MEANS, A DEFORMABLE SUBSTANTIALLY NON-COMPRESSIBLE MASS WITHIN SAID BODY AND BEARING ON SAID CLOSURE PART TO CLOSE SAID OUTLET PORT MEANS, SAID VALVE BODY BEING PROVIDED WITH MEANS INCLUDING A TUBULAR RESILIENT CONTINUOUS CIRCUMFERENTIAL SHEATH ENCLOSING SAID MASS AND DESIGNED TO URGE SAID MASS TOWARD SAID CLOSURE PART WITH A SELECTED FORCE BUT BEING EXPANSIBLE, TO PERMIT DEFORMATION OF SAID MASS AND ACCOMMODATE MOVEMENT OF SAID CLOSURE PART TO OPEN SAID OUTLET PORT MEANS TO RELIEVE PRESSURE IN EXCESS OF SAID FORCE, AND CONTRACTABLE TO EFFECT CLOSURE OF SAID PORT MEANS UPON RELIEF OF SUCH EXCESS PRESSURE.
Claim 2
Dependent Claim
122 words
A PRESSURE RELIEF VALVE COMPRISING A VALVE BODY HAVING INLET AND OUTLET PORT MEANS THEREIN, A CLOSURE PART IN SAID BODY FOR SAID OUTLET PORT MEANS, A DEFORMABLE SUBSTANTIALLY NON-COMPRESSIBLE MASS WITHIN SAID BODY AND BEARING ON SAID CLOSURE PART TO CLOSE SAID OUTLET PORT MEANS, SAID VALVE BODY BEING PROVIDED WITH MEANS INCLUDING A TUBULAR RESILIENT CONTINUOUS CIRCUMFERENTIAL SHEATH ENCLOSING SAID MASS AND DESIGNED TO URGE SAID MASS TOWARD SAID CLOSURE PART WITH A SELECTED FORCE BUT BEING EXPANSIBLE, TO PERMIT DEFORMATION OF SAID MASS AND ACCOMMODATE MOVEMENT OF SAID CLOSURE PART TO OPEN SAID OUTLET PORT MEANS TO RELIEVE PRESSURE IN EXCESS OF SAID FORCE, AND CONTRACTABLE TO EFFECT CLOSURE OF SAID PORT MEANS UPON RELIEF OF SUCH EXCESS PRESSURE.
References Cited (Backward Citations)
US2401237A
Cited
US2615670A
Cited
US2800321A
Cited
US2733060A
Cited
US2859033A
Cited
US2908250A
Cited
US2910998A
Cited
US2982537A
Cited
FR1250997A
Cited
US3080159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |