Patent US5659587A successfully refreshed from Google Patents.
Patent US3298286A successfully refreshed from Google Patents.
US3298286A
Expired / Lapsed
US
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Valve operator
Assignee: Grove Valve and Regulator Co
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Filing: 1964-12-18
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Granted: 1967-01-17
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Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Brody W Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:17
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/06; F15B15/066; F16; F16K; F16K31/00; F16K31/12; F16K31/16; F16K31/163; F16K31/1635; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A VALVE OPERATOR COMPRISING: A HOUSING, MEANS FORMING A CYLINDRICAL CHAMBER AT ONE END OF SAID HOUSING, A PISTON SLIDABY CARRIED IN SAID CHAMBER, AN END PLATE MOUNTED ON SAID HOUSING AT THE OTHER END THEREOF, A PAIR OF SPACED ARMS EXTENDING FROM SAID PISTON TOWARD SAID OTHER END, A PAIR OF ROLLERS ROTATABLY MOUNTED BETWEEN SAID ARMS, A GUIDE ROLLER ROTATABLY MOUNTED BETWEEN SAID ARMS, A GUIDE PLATE SECURED ON SAID END PLATE TO EXTEND TOWARD SAID ONE END OF SAID HOUSING, MEANS FORMING AN ELONGATED SLOT OPENING IN THE FREE END OF SAID GUIDE PLATE, SAID GUIDE ROLLER BEING RECEIVED IN SAID SLOT, LATERAL BEARING SURFACES ON OPPOSITE EDGES OF SAID GUIDE PLATE AT SAID FREE END THEREOF, SURFACES ON SAID HOUSING CLOSELY ADJACENT TO SAID BEARING SURFACES TO LIMIT SPREADING OF SAID GUIDE PLATE,
Claim 2
Dependent Claim
137 words
A VALVE OPERATOR COMPRISING: A HOUSING, MEANS FORMING A CYLINDRICAL CHAMBER AT ONE END OF SAID HOUSING, A PISTON SLIDABY CARRIED IN SAID CHAMBER, AN END PLATE MOUNTED ON SAID HOUSING AT THE OTHER END THEREOF, A PAIR OF SPACED ARMS EXTENDING FROM SAID PISTON TOWARD SAID OTHER END, A PAIR OF ROLLERS ROTATABLY MOUNTED BETWEEN SAID ARMS, A GUIDE ROLLER ROTATABLY MOUNTED BETWEEN SAID ARMS, A GUIDE PLATE SECURED ON SAID END PLATE TO EXTEND TOWARD SAID ONE END OF SAID HOUSING, MEANS FORMING AN ELONGATED SLOT OPENING IN THE FREE END OF SAID GUIDE PLATE, SAID GUIDE ROLLER BEING RECEIVED IN SAID SLOT, LATERAL BEARING SURFACES ON OPPOSITE EDGES OF SAID GUIDE PLATE AT SAID FREE END THEREOF, SURFACES ON SAID HOUSING CLOSELY ADJACENT TO SAID BEARING SURFACES TO LIMIT SPREADING OF SAID GUIDE PLATE,
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |