US3113808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic bearing
Assignee: North American Aviation Corp
•
Filing: 1962-05-15
•
Granted: 1963-12-10
•
Expires: 1982-05-15
Abstract
No abstract record available.
Inventors
- 👤 George R Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:40
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0644; F16C32/0681; F16C32/0696
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A HYDRAULIC BEARING HAVING SILL AND RUNNER SURFACES SEPARATED BY A FILM OF PRESSURIZED HYDRAULIC FLUID OF CONSTANT THICKNESS, IN COMBINATION: PUMP MEANS DELIVERING PRESSURIZED HYDRAULIC FLUID, AND FLOW-CONTROL MEANS METERING THE FLOW OF PRESSURIZED HYDRAULIC FLUID DELIVERED BY SAID PUMP MEANS TO THE HYDRAULIC BEARING, SAID FLOW-CONTROL MEANS COMPRISING A CAPILLARY MEANS HAVING A FIXED-VALUE FLOW RESISTANCE, AND PRESSURE-RESPONSIVE VALVE MEANS REGULATING THE FLOW OF FLUID FROM SAID PUMP MEANS TO SAID CAPILLARY MEANS, SAID VALVE MEANS MAINTAINING A CONSTANT PRESSURE DIFFERENTIAL ACROSS SAID CAPILLARY MEANS WHEN PRESSURE LOADINGS OF THE BEARING ARE CHANGED AND WHEN PRESSURE LOADINGS OF SAID PUMP MEANS ARE CHANGED.
Claim 2
Dependent Claim
106 words
IN A HYDRAULIC BEARING HAVING SILL AND RUNNER SURFACES SEPARATED BY A FILM OF PRESSURIZED HYDRAULIC FLUID OF CONSTANT THICKNESS, IN COMBINATION: PUMP MEANS DELIVERING PRESSURIZED HYDRAULIC FLUID, AND FLOW-CONTROL MEANS METERING THE FLOW OF PRESSURIZED HYDRAULIC FLUID DELIVERED BY SAID PUMP MEANS TO THE HYDRAULIC BEARING, SAID FLOW-CONTROL MEANS COMPRISING A CAPILLARY MEANS HAVING A FIXED-VALUE FLOW RESISTANCE, AND PRESSURE-RESPONSIVE VALVE MEANS REGULATING THE FLOW OF FLUID FROM SAID PUMP MEANS TO SAID CAPILLARY MEANS, SAID VALVE MEANS MAINTAINING A CONSTANT PRESSURE DIFFERENTIAL ACROSS SAID CAPILLARY MEANS WHEN PRESSURE LOADINGS OF THE BEARING ARE CHANGED AND WHEN PRESSURE LOADINGS OF SAID PUMP MEANS ARE CHANGED.
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) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |