Patent US3084633A successfully refreshed from Google Patents.
US3084633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pump or motor
Assignee: North American Aviation Corp
•
Filing: 1957-09-09
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Granted: 1963-04-09
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Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 Henrichsen Knut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:38
CPC Classifications
F; F01; F01B; F01B1/00; F01B1/06; F01B1/0641; F01B1/0644; F01B13/00; F01B13/04; F01B13/06; F01B13/061; F03; F03C; F03C1/00; F03C1/02; F03C1/04; F03C1/0403; F03C1/0435; F03C1/0438
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A HYDRAULIC DEVICE COMPRISING A VALVE MEMBER; A CYLINDER BLOCK IN ENGAGEMENT WITH AND ROTATABLE RELATIVE TO SAID VALVE MEMBER, SAID CYLINDER BLOCK HAVING A PLURALITY OF CYLINDERS THEREIN, SAID VALVE MEMBER HAVING INLET AND OUTLET PORTS COOPERATING WITH SAID CYLINDERS; A PISTONSLIPPER ASSEMBLY RECIPROCATIVE IN EACH OF SAID CYLINDERS; A BEARING RACE ENGAGED BY THE SLIPPER PORTIONS OF SAID PISTON-SLIPPER ASSEMBLIES, SAID BEARING RACE BEING POSITIONED TO CAUSE RECIPROCATION OF SAID PISTON-SLIPPER ASSEMBLIES UPON SUCH ROTATION OF SAID CYLINDER BLOCK, EACH OF SAID PISTON-SLIPPER ASSEMBLIES HAVING A METERING PASSAGEWAY THERETHROUGH EXTENDING FROM THE CYLINDER WITH WHICH THE SAME IS ASSOCIATED TO THE SLIPPER THEREOF AT THE LOCATION OF SAID BEARING RACE FOR PROVIDING LUBRICATING FLUID FOR SAID SLIPPER; AND CHECK VALVE MEANS IN EACH OF SAID PASSAGEWAYS FOR PERMITTING FLOW ONLY FROM SAID CYLINDERS TO SAID BEARING RACE WHILE PREVENTING REVERSE FLOW THERE-
Claim 2
Dependent Claim
144 words
A HYDRAULIC DEVICE COMPRISING A VALVE MEMBER; A CYLINDER BLOCK IN ENGAGEMENT WITH AND ROTATABLE RELATIVE TO SAID VALVE MEMBER, SAID CYLINDER BLOCK HAVING A PLURALITY OF CYLINDERS THEREIN, SAID VALVE MEMBER HAVING INLET AND OUTLET PORTS COOPERATING WITH SAID CYLINDERS; A PISTONSLIPPER ASSEMBLY RECIPROCATIVE IN EACH OF SAID CYLINDERS; A BEARING RACE ENGAGED BY THE SLIPPER PORTIONS OF SAID PISTON-SLIPPER ASSEMBLIES, SAID BEARING RACE BEING POSITIONED TO CAUSE RECIPROCATION OF SAID PISTON-SLIPPER ASSEMBLIES UPON SUCH ROTATION OF SAID CYLINDER BLOCK, EACH OF SAID PISTON-SLIPPER ASSEMBLIES HAVING A METERING PASSAGEWAY THERETHROUGH EXTENDING FROM THE CYLINDER WITH WHICH THE SAME IS ASSOCIATED TO THE SLIPPER THEREOF AT THE LOCATION OF SAID BEARING RACE FOR PROVIDING LUBRICATING FLUID FOR SAID SLIPPER; AND CHECK VALVE MEANS IN EACH OF SAID PASSAGEWAYS FOR PERMITTING FLOW ONLY FROM SAID CYLINDERS TO SAID BEARING RACE WHILE PREVENTING REVERSE FLOW THERE-
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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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |