US3176954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible valve assembly
Assignee: Ross Operating Valve Co
•
Filing: 1961-04-13
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Granted: 1965-04-06
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Expires: 1981-04-13
Abstract
No abstract record available.
Inventors
- 👤 Russell J Cameron
- 👤 Daniel B Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:17
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/0426; F16; F16K; F16K31/00; F16K31/12; F16K31/42; F16K31/423; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; G05D16/2097; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/8593; Y10T137/87169; Y10T137/87193; Y10T137/87209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN COMBINATION, A PISTON-OPERATED MAIN VALVE HAVING A VALVE SEAT, INLET, OUTLET, PISTON, PISTON CHAMBER AND AN UPPER HOUSING SURFACE TO WHICH THE PISTON CHAMBER IS CONNECTED, A SOLENOID-OPERATED PILOT VALVE HAVING A LOWER HOUSING SURFACE, A PLUNGER, AND INLET AND OUTLET PORTS, THE INLET PORT BEING IN OPPOSED RELATION WITH THE PLUNGER WHEN THE PLUNGER MOVES TO ONE POSITION CLOSING SAID INLET PORT, A SPRING URGING SAID PLUNGER TOWARD SAID ONE POSITION, WHEREBY THE SPRING MUST COUNTERACT THE INLET PRESSURE, A SOLENOID FOR MOVING SAID PLUNGER AWAY FROM SAID INLET PORT AGAINST THE ACTION OF SAID SPRING, FORCE-MULTIPLYING MEANS BETWEEN SAID PILOT VALVE AND MAIN VALVE, SAID FORCE-MULTIPLYING MEANS HAVING A HOUSING WITH A LOWER HOUSING SURFACE CONNECTED WITH THE UPPER MAIN VALVE HOUSING SURFACE AND AN UPPER HOUSING SURFACE CONNECTED WITH THE LOWER PILOT VALVE HOUSING SURFACE, SAID FORCE-MULTIPLYING MEANS FURTHER HAVING A PISTON SLIDLABLY MOUNTED IN ITS HOUSING AND HAVING A PISTON CHAMBER CONNECTED TO SAID UPPER
Claim 2
Dependent Claim
160 words
IN COMBINATION, A PISTON-OPERATED MAIN VALVE HAVING A VALVE SEAT, INLET, OUTLET, PISTON, PISTON CHAMBER AND AN UPPER HOUSING SURFACE TO WHICH THE PISTON CHAMBER IS CONNECTED, A SOLENOID-OPERATED PILOT VALVE HAVING A LOWER HOUSING SURFACE, A PLUNGER, AND INLET AND OUTLET PORTS, THE INLET PORT BEING IN OPPOSED RELATION WITH THE PLUNGER WHEN THE PLUNGER MOVES TO ONE POSITION CLOSING SAID INLET PORT, A SPRING URGING SAID PLUNGER TOWARD SAID ONE POSITION, WHEREBY THE SPRING MUST COUNTERACT THE INLET PRESSURE, A SOLENOID FOR MOVING SAID PLUNGER AWAY FROM SAID INLET PORT AGAINST THE ACTION OF SAID SPRING, FORCE-MULTIPLYING MEANS BETWEEN SAID PILOT VALVE AND MAIN VALVE, SAID FORCE-MULTIPLYING MEANS HAVING A HOUSING WITH A LOWER HOUSING SURFACE CONNECTED WITH THE UPPER MAIN VALVE HOUSING SURFACE AND AN UPPER HOUSING SURFACE CONNECTED WITH THE LOWER PILOT VALVE HOUSING SURFACE, SAID FORCE-MULTIPLYING MEANS FURTHER HAVING A PISTON SLIDLABLY MOUNTED IN ITS HOUSING AND HAVING A PISTON CHAMBER CONNECTED TO SAID UPPER
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |