Patent US3883193A successfully refreshed from Google Patents.
US3883193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pedestal bearing with spiral grooves in the bearing gliding plane
Assignee: Dornier System GmbH
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Filing: 1973-06-25
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Granted: 1975-05-13
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Expires: 1993-06-25
Abstract
Abstract This invention relates to an improvement in a pedestal bearing having spiral-shaped oil grooves in the bearing gliding surface, the improvement comprising a continuous annular groove in the bearing gliding surface, said groove being in the area near the center of rotation of the bearing end and concentric thereto, and all of said spiral-shaped oil grooves terminating in said annular groove.
Inventors
- 👤 Wolfgang Hepp
- 👤 Klaus Pimiskern
- 👤 Werner Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:45
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/106; F16C33/107; F16C17/00; F16C17/04; F16C17/08; F16C17/10; F16C17/102; F16C17/105
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
70 words
In an axial friction bearing comprising a stationary ball socket and a spherical bearing part provided on the surface thereof with spiral grooves, said spiral grooves terminating in the feed direction in a recess concentric to the pole of the sphere, the improvement comprising that said recess is a continuous annular groove in proximity to said pole, and that a smooth sphere portion is between said groove and said pole.
Claim 2
Dependent Claim
70 words
In an axial friction bearing comprising a stationary ball socket and a spherical bearing part provided on the surface thereof with spiral grooves, said spiral grooves terminating in the feed direction in a recess concentric to the pole of the sphere, the improvement comprising that said recess is a continuous annular groove in proximity to said pole, and that a smooth sphere portion is between said groove and said pole.
Claim 3
Dependent Claim
26 words
A bearing according to claim 1 in which the cross-sectional surface of each of said spiral grooves corresponds to the cross-sectional surface of the annular groove.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |