US3675977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing for supporting heavy rotating machinery
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1970-10-02
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Granted: 1972-07-11
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Expires: 1990-10-02
Abstract
Abstract A hydrostatic bearing for heavy rotating machinery contains a number of bearing blocks, each consisting of a fixed base plate and a top plate which is movable in relation thereto. The bearing blocks cooperate with a race ring in the machinery, and are hydraulically interconnected in one or more groups. One block within each group will serve as reference unit with respect to the clearance between the blocks and race ring, and an automatic adjustment of the clearance will occur if the race ring due to changes in load and/or temperature will temporarily change its shape and/or its position.
Inventors
- 👤 Torsten Henry Arsenius
- 👤 Carl Goran Albin Hallstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:45
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0662; F16C32/0666; F16C13/00; F16C13/02; F16C13/04; F16C17/00; F16C17/02; F16C17/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A bearing for supporting heavy rotating machinery in which a race ring is supported by a number of individual hydrostatic bearing units, each having a top part which is self-aligning with respect to the envelope surface of the race ring and in which the bearing units are hydraulically interconnected in such a manner that an automatic adjustment of the clearance between the race ring and the top parts of the individual bearing units is obtained, irrespective of occasional changes in the shape and/or the position of the race ring, each bearing unit including a fixed base plate, and a top part cooperating therewith, said base plate and said top part acting as piston and cylinder when supplied with a pressure fluid, the face of the top part remote from the base plate being designed to suit the envelope surface of the race ring and having a pocket connected to a source of pressure fluid supply.
Claim 2
Dependent Claim
155 words
A bearing for supporting heavy rotating machinery in which a race ring is supported by a number of individual hydrostatic bearing units, each having a top part which is self-aligning with respect to the envelope surface of the race ring and in which the bearing units are hydraulically interconnected in such a manner that an automatic adjustment of the clearance between the race ring and the top parts of the individual bearing units is obtained, irrespective of occasional changes in the shape and/or the position of the race ring, each bearing unit including a fixed base plate, and a top part cooperating therewith, said base plate and said top part acting as piston and cylinder when supplied with a pressure fluid, the face of the top part remote from the base plate being designed to suit the envelope surface of the race ring and having a pocket connected to a source of pressure fluid supply.
Claim 3
Dependent Claim
53 words
The bearing according to claim 1, in which the adjacent faces of the base plate and of the top part is each provided with a seat adapted to receive a ball fitted between the top part and the base plate to transfer loads therebetween, when the fluid pressure is removed from the bearing.
Claim 4
Dependent Claim
61 words
The bearing according to claim 2, in which a piston fitted into a cylinder in each base plate is provided with a piston rod and is mounted in such a manner that it will lift the ball of the pertaining unit out of its seat in the base plate, when the cylinder is supplied with pressure fluid from the hydraulic system.
Claim 5
Dependent Claim
27 words
The bearing according to claim 1 in which all bearing units to each side of a vertical plane through the axis of the bearing are hydraulically interconnected.
Claim 6
Dependent Claim
43 words
The bearing according to claim 1, in which one bearing unit is mounted centrally in a vertical plane through the axis of the bearing and that further bearing units are arranged symmetrically with respect to the first mentioned unit and hydraulically connected thereto.
Claim 7
Dependent Claim
65 words
The bearing according to claim 3, in which the piston operating the ball in one particular unit of a group of interconnected units has a larger efficient area and shorter stroke than the pistons of the other units within the same group, and in that the piston in the first mentioned unit is operated directly by the pressure of the fluid supplied to that unit.
Claim 8
Dependent Claim
26 words
The bearing according to claim 1, in which each bearing unit is provided with its own pump driven independently of the pumps for the other units.
References Cited (Backward Citations)
US3093426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |