US3308846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve improvement
Assignee: Westinghouse Canada Inc
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Filing: 1963-10-16
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Granted: 1967-03-14
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Expires: 1983-10-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Yuile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:40
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/10; F16K17/105; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7761; Y10T137/7762; Y10T137/7769; Y10T137/777
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
A RELIEF VALVE FOR AN ENCLOSURE COMPRISING A VALVE MEMBER THAT IS MOVED TO OPEN AND CLOSE THE VALVE AND ADAPTED TO OPEN THE VALVE AT A PREDETERMINED FLUID PRESSURE IN SAID ENCLOSURE, BIASING MEANS FOR APPLYING TO SAID VALVE MEMBER A MAJOR PART OF THE AVAILABLE VALVE CLOSING FORCE, A RELEASABLE ASSISTANT MEANS COMPRISING A SOLENOID FOR APPLYING TO SAID VALVE MEMBER A MINOR PART OF THE AVAILABLE VALVE CLOSING FORCE, SAID MINOR PART HAVING A CONSTANT VALUE, AND MEANS RESPONSIVE TO SAID FLUID PRESSURE FOR RELEASING SAID RELEASABLE ASSISTANT MEANS UPON REACHING SAID PREDETERMINED PRESSURE WHEREBY THE FLUID PRESSURE TO BE RELIEVED FROM SAID ENCLOSURE ACTS UPON SAID VALVE MEMBER TO OPEN THE VALVE.
References Cited (Backward Citations)
US2214963A
Cited
US2342472A
Cited
US3041969A
Cited
US2944564A
Cited
FR1298599A
Cited
US3229713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |