Patent US3204926A successfully refreshed from Google Patents.
US3204926A
Expired / Lapsed
US
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Valve control mechanism
Assignee: Specialties Development Corp
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Filing: 1961-12-21
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Granted: 1965-09-07
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 William F Wismar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:58
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A VALVE CONTROL MECHANISM FOR A PRESSURE OPERATED VALVE OF THE TYPE PROVIDED WITH A CHAMBER HAVING PISTON MEANS THEREIN FOR HOLDING THE VALVE CLOSED WHEN THE CHAMBER IS PRESSURIZED, THE COMBINATION OF A BODY PROVIDED WITH A VENTING PASSAGEWAY THEREIN HAVING AN INLET END AND AN OUTLET END, MEANS ADAPTED TO OPERATIVELY MOUNT SAID BODY ON A PRESSURE OPERATED VALVE, A MEMBER INSERTED IN SAID PASSAGEWAY SEALING SAID PASSAGEWAY AND ADAPTED TO BE EXPELLED THEREFROM BY FLUID PRESSURE AT SAID INLET END OF SAID PASSAGEWAY, A CONTROL HEAD ROTATABLY MOUNTED ON SAID BODY TO ROTATE ABOUT THE LONGITUDINAL AXIS OF SAID MEMBER, SAID CONTROL HEAD HAVING A FIRST BORE FOR RECEIV-
Claim 2
Dependent Claim
113 words
IN A VALVE CONTROL MECHANISM FOR A PRESSURE OPERATED VALVE OF THE TYPE PROVIDED WITH A CHAMBER HAVING PISTON MEANS THEREIN FOR HOLDING THE VALVE CLOSED WHEN THE CHAMBER IS PRESSURIZED, THE COMBINATION OF A BODY PROVIDED WITH A VENTING PASSAGEWAY THEREIN HAVING AN INLET END AND AN OUTLET END, MEANS ADAPTED TO OPERATIVELY MOUNT SAID BODY ON A PRESSURE OPERATED VALVE, A MEMBER INSERTED IN SAID PASSAGEWAY SEALING SAID PASSAGEWAY AND ADAPTED TO BE EXPELLED THEREFROM BY FLUID PRESSURE AT SAID INLET END OF SAID PASSAGEWAY, A CONTROL HEAD ROTATABLY MOUNTED ON SAID BODY TO ROTATE ABOUT THE LONGITUDINAL AXIS OF SAID MEMBER, SAID CONTROL HEAD HAVING A FIRST BORE FOR RECEIV-
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |