US3285141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary null pilot valve controlled device
Assignee: Individual
•
Filing: 1964-07-07
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Granted: 1966-11-15
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Raymond C Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:44
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86549
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A SERVOMOTOR CONTROL DEVICE COMPRISING A CLOSED ELONGATED CYLINDRICAL PILOT VALVE CASING HAVING A PRESSURE FLUID DELIVERY PORT IN THE SIDE WALL THEREOF INTERMEDIATE THE OPPOSITE END THEREOF, A CANTED PILOT VALVE DISK ROTATABLY AND AXIALLY ADJUSTABLE IN SAID CASING HAVING A PORT CLOSURE RIM IN SLIDING CONTACT WITH THE INNER WALL OF THE CASING, SAID CANTED VALVE DISK HAVING A NULL POSITION COVERING AND CLOSING SAID DELIVERY PORT, MEANS EXTERIORLY OF SAID CASING OPERATIVELY CONNECTED TO SAID CANTED VALVE DISK FOR ADJUSTING THE SAME AXIALLY TO PREDETERMINED POSITIONS IN SAID CASING TO UNCOVER AND OPEN SAID DELIVERY PORT CONDUIT MEANS FROM SAID DELIVERY PORT, ADAPTED TO CONNECT THE INTERIOR OF THE ONE END OF A SERVOMOTOR CYLINDER HAVING A PISTON THEREIN, A SECOND FLUID PORT IN THE WALL OF SAID CASING DISPLACED AXIALLY BEYOND THE PORTION TRAVERSED BY SAID RIM, SAID SECOND PORT BEING ADAPTED TO BE CONNECTED TO A SOURCE OF FLUID UNDER PRESSURE, VALVE ACTUATING MEANS ADAPTED TO CONNECT THE SERVOMOTOR PISTON TO SAID CANTED VALVE DISK FOR ROTATING SAID CANTED VALVE DISK IN ITS CANTED POSITION ON THE CENTRAL AXIS OF SAID
Claim 2
Dependent Claim
186 words
A SERVOMOTOR CONTROL DEVICE COMPRISING A CLOSED ELONGATED CYLINDRICAL PILOT VALVE CASING HAVING A PRESSURE FLUID DELIVERY PORT IN THE SIDE WALL THEREOF INTERMEDIATE THE OPPOSITE END THEREOF, A CANTED PILOT VALVE DISK ROTATABLY AND AXIALLY ADJUSTABLE IN SAID CASING HAVING A PORT CLOSURE RIM IN SLIDING CONTACT WITH THE INNER WALL OF THE CASING, SAID CANTED VALVE DISK HAVING A NULL POSITION COVERING AND CLOSING SAID DELIVERY PORT, MEANS EXTERIORLY OF SAID CASING OPERATIVELY CONNECTED TO SAID CANTED VALVE DISK FOR ADJUSTING THE SAME AXIALLY TO PREDETERMINED POSITIONS IN SAID CASING TO UNCOVER AND OPEN SAID DELIVERY PORT CONDUIT MEANS FROM SAID DELIVERY PORT, ADAPTED TO CONNECT THE INTERIOR OF THE ONE END OF A SERVOMOTOR CYLINDER HAVING A PISTON THEREIN, A SECOND FLUID PORT IN THE WALL OF SAID CASING DISPLACED AXIALLY BEYOND THE PORTION TRAVERSED BY SAID RIM, SAID SECOND PORT BEING ADAPTED TO BE CONNECTED TO A SOURCE OF FLUID UNDER PRESSURE, VALVE ACTUATING MEANS ADAPTED TO CONNECT THE SERVOMOTOR PISTON TO SAID CANTED VALVE DISK FOR ROTATING SAID CANTED VALVE DISK IN ITS CANTED POSITION ON THE CENTRAL AXIS OF SAID
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |