Patent US3270625A successfully refreshed from Google Patents.
US3270625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid motor and pressure responsive valve
Assignee: Ross Operating Valve Co
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Filing: 1965-09-07
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Granted: 1966-09-06
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 Andrew B Huntington
- 👤 Daniel B Abbott
- 👤 Edwin P Brinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:33
CPC Classifications
F; F15; F15B; F15B20/00; F15B20/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
IN COMBINATION WITH A SYSTEM HAVING A FLUID MOTOR, A SUPPLY PORT, AND A CONTROL VALVE HAVING INLET AND WORKING PORTS AND MOVABLE BETWEEN POSITIONS CONNECTING AND DISCONNECTING SAID SUPPLY PORT AND FLUID MOTOR, A LOCKOUT VALVE COMPRISING A HOUSING, A SPOOL SLIDABLY MOUNTED IN SAID HOUSING BETWEEN OPEN AND LOCKOUT POSITIONS, FIRST AND SECOND PORTS IN SAID HOUSING CONNECTED RESPECTIVELY TO SAID SUPPLY PORT AND CONTROL VALVE INLET PORT, AN EXHAUST PORT IN THE LOCKOUT VALVE HOUSING, THE VALVE SPOOL WHEN IN ITS LOCKOUT POSITION DISCONNECTING SAID FIRST AND SECOND PORTS AND CONNECTING SAID SECOND PORT AND EXHAUST PORT, MEANS BIASING SAID SPOOL TOWARD ITS LOCKOUT POSITION, PRESSURERESPONSIVE MEANS CONNECTED TO SAID CONTROL VALVE WORKING PORT FOR OVERCOMING SAID BIASING MEANS AND HOLDING SAID SPOOL TO ITS OPEN POSITION, THE SPOOL WHEN IN ITS OPEN POSITION CONNECTING SAID FIRST AND SECOND PORTS, AND MEANS ON SAID SPOOL FOR SELECTIVELY SHIFTING SAID SPOOL TO ITS OPEN POSITION.
Claim 2
Dependent Claim
157 words
IN COMBINATION WITH A SYSTEM HAVING A FLUID MOTOR, A SUPPLY PORT, AND A CONTROL VALVE HAVING INLET AND WORKING PORTS AND MOVABLE BETWEEN POSITIONS CONNECTING AND DISCONNECTING SAID SUPPLY PORT AND FLUID MOTOR, A LOCKOUT VALVE COMPRISING A HOUSING, A SPOOL SLIDABLY MOUNTED IN SAID HOUSING BETWEEN OPEN AND LOCKOUT POSITIONS, FIRST AND SECOND PORTS IN SAID HOUSING CONNECTED RESPECTIVELY TO SAID SUPPLY PORT AND CONTROL VALVE INLET PORT, AN EXHAUST PORT IN THE LOCKOUT VALVE HOUSING, THE VALVE SPOOL WHEN IN ITS LOCKOUT POSITION DISCONNECTING SAID FIRST AND SECOND PORTS AND CONNECTING SAID SECOND PORT AND EXHAUST PORT, MEANS BIASING SAID SPOOL TOWARD ITS LOCKOUT POSITION, PRESSURERESPONSIVE MEANS CONNECTED TO SAID CONTROL VALVE WORKING PORT FOR OVERCOMING SAID BIASING MEANS AND HOLDING SAID SPOOL TO ITS OPEN POSITION, THE SPOOL WHEN IN ITS OPEN POSITION CONNECTING SAID FIRST AND SECOND PORTS, AND MEANS ON SAID SPOOL FOR SELECTIVELY SHIFTING SAID SPOOL TO ITS OPEN POSITION.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |