Patent US3863997A successfully refreshed from Google Patents.
US3863997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conical bearings
Assignee: Vickers Ltd
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Filing: 1973-08-21
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Granted: 1975-02-04
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Expires: 1993-08-21
Abstract
Abstract A bearing including pivoted pads having flat surfaces running on a thrust face of conical form convex with respect to the flat running surfaces of the pads.
Inventors
- 👤 Anthony Roger Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:50
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/04; F16C17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A bearing that includes an axial piston swash plate having pivoted slipper pads, and a swash plate having a thrust face on the pads run in oPeration, the surface of each pad that runs on the thrust face being substantially flat and the thrust face being of conical form generated from a centre about which the motion of each pad is substantially circular and so as to be convex with respect to the substantially flat running surfaces of the pads.
Claim 2
Dependent Claim
80 words
A bearing that includes an axial piston swash plate having pivoted slipper pads, and a swash plate having a thrust face on the pads run in oPeration, the surface of each pad that runs on the thrust face being substantially flat and the thrust face being of conical form generated from a centre about which the motion of each pad is substantially circular and so as to be convex with respect to the substantially flat running surfaces of the pads.
References Cited (Backward Citations)
US2137487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |