Patent US2322082A successfully refreshed from Google Patents.
Patent US3410304A successfully refreshed from Google Patents.
US3410304A
Expired / Lapsed
US
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Relief valves
Assignee: Individual
•
Filing: 1966-01-19
•
Granted: 1968-11-12
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Herman L Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:03
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/042; F01; F01L; F01L3/00; F01L2003/25; F01L2003/258; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IN A VALVE, A CASE HAVING A VALVE SEAT, A CLOSURE SEATABLE ON SAID SEAT, A FRICTION DEVICE FOR HOLDING SAID CLOSURE IN CLOSED POSITION, MEANS TO APPLY FORCE TO SAID FRICTION DEVICE, A CONTROL MEMBER FOR RELEASING SAID FORCE-APPLYING MEANS.
Claim 2
Dependent Claim
41 words
IN A VALVE, A CASE HAVING A VALVE SEAT, A CLOSURE SEATABLE ON SAID SEAT, A FRICTION DEVICE FOR HOLDING SAID CLOSURE IN CLOSED POSITION, MEANS TO APPLY FORCE TO SAID FRICTION DEVICE, A CONTROL MEMBER FOR RELEASING SAID FORCE-APPLYING MEANS.
References Cited (Backward Citations)
US1733528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |