US3765735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing device for a rotating shaft
Assignee: Individual
•
Filing: 1972-02-08
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Granted: 1973-10-16
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Expires: 1992-02-08
Abstract
Abstract The bearing device for a rotating shaft which is lifted and centered by means of fluid-film bearings of the self-generating pressure type, comprises a pivot in the form of a spherical cap having an axis which coincides with the rotating shaft and rigidly fixed to this latter, a supporting track of selflubricating material for the cap having a profile of revolution which is widened-out towards the flat face of the spherical cap. The axis of the track coincides substantially with the axis of the rotating shaft and the spherical cap bears on and cooperates with the track during periods of starting and stopping of the shaft.
Inventors
- 👤 L Bourgain
- 👤 G Rouquie
- 👤 G Dreyfus
- 👤 Nabour M Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:25
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/166; F01D25/168; F16; F16C; F16C17/00; F16C17/04; F16C17/12; F16C17/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A bearing device for a rotating shaft and especially for a shaft which is lifted and centered by fluid-film bearings of the self-generating type, comprising a pivot having the shape of a spherical cap rigidly fixed to a rotating shaft and the axis of which coincides with the axis of the rotating shaft, and a frusto-conical supporting track for said pivot of selflubricating material, said track opening-out to receive said spherical cap and having an axis which coincides substantially with the axis of the shaft, said spherical cap resting on and cooperating with said track during starting and stopping of rotation of the shaft, said device including a ring of selflubricating metal fixed on an internal wall of a bore through which the rotating shaft passes, the internal diameter of said ring being only slightly larger than the diameter of the rotating shaft where surrounded by said ring.
Claim 2
Dependent Claim
148 words
A bearing device for a rotating shaft and especially for a shaft which is lifted and centered by fluid-film bearings of the self-generating type, comprising a pivot having the shape of a spherical cap rigidly fixed to a rotating shaft and the axis of which coincides with the axis of the rotating shaft, and a frusto-conical supporting track for said pivot of selflubricating material, said track opening-out to receive said spherical cap and having an axis which coincides substantially with the axis of the shaft, said spherical cap resting on and cooperating with said track during starting and stopping of rotation of the shaft, said device including a ring of selflubricating metal fixed on an internal wall of a bore through which the rotating shaft passes, the internal diameter of said ring being only slightly larger than the diameter of the rotating shaft where surrounded by said ring.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |