Patent US3574424A successfully refreshed from Google Patents.
US3574424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axially loaded bearing
Assignee: MAN Turbo GmbH
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Filing: 1969-02-20
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Granted: 1971-04-13
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Expires: 1989-02-20
Abstract
Abstract An axially loaded bearing, in which the axial load is produced hydraulically.
Inventors
- 👤 Klaus Hagemeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
F; F16; F16C; F16C25/00; F16C25/06; F16C25/08; F16C27/00; F16C27/04; F16C27/045; F16C19/00; F16C19/54; F16C2360/00; F16C2360/23; F16C2360/24
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
An axially loaded bearing assembly, especially for a high-speed shaft, wherein hydraulic means are provided for realizing the axial prestress, comprising a plurality of antifriction bearing means, each of the bearing means having an inner race ring fixedly mounted on the shaft and an outer race ring form-lockingly mounted in a flange bushing, the flange bushings being axially movable in relation to each other by sliding in a supporting means and arranged therein to act as annular pistons, and means for preventing the flange bushings from rotating about the bearing axis.
Claim 2
Dependent Claim
91 words
An axially loaded bearing assembly, especially for a high-speed shaft, wherein hydraulic means are provided for realizing the axial prestress, comprising a plurality of antifriction bearing means, each of the bearing means having an inner race ring fixedly mounted on the shaft and an outer race ring form-lockingly mounted in a flange bushing, the flange bushings being axially movable in relation to each other by sliding in a supporting means and arranged therein to act as annular pistons, and means for preventing the flange bushings from rotating about the bearing axis.
Claim 3
Dependent Claim
26 words
A bearing assembly in accordance with claim 1, comprising sealing rings mounted in grooves for producing sealing joints between the supporting means and the flange bushings.
Claim 4
Dependent Claim
58 words
A bearing assembly in accordance with claim 2, in which the flange bushings are mounted in cylindrical recesses in the supporting means on either side of a part of lesser internal diameter than the recesses, the end faces formed at the ends of the part of lesser diameter being axially opposite annular piston faces on the flange bushings.
Claim 5
Dependent Claim
44 words
A bearing assembly in accordance with claim 3, comprising grooves substantially concentric about the bearing axis, for supplying hydraulic liquid to the annular piston faces, and radial ducts for draining oil leaking between cylindrical surfAces on the flange bushings and in the supporting means.
Claim 6
Dependent Claim
29 words
A bearing assembly in accordance with claim 4, further comprising radial grooves for leading hydraulic fluid between the piston faces and the ends of the part of lesser diameter.
Claim 7
Dependent Claim
27 words
A bearing assembly in accordance with claim 5, in which the part of lesser diameter is in the form of a bush inserted into the supporting means.
Claim 8
Dependent Claim
62 words
A bearing assembly according to claim 12, in which in an axial center position of the shaft, a small clearance is produced between a respective end face of an annular piston and the corresponding offset so that an annular space is formed between each annular piston and the housing which serves as pressure cylinder for producing the axial load on the bearing.
Claim 9
Dependent Claim
50 words
A bearing assembly according to claim 9, in which pressure oil is supplied to the pressure space by way annular grooves in the housing bore while the leakage oil is discharged by way of radial bores in the housing within the area of the outer edge of the flange bushings.
Claim 10
Dependent Claim
31 words
A bearing assembly according to claim 8, in which the end face of each offset is offset is provided with a radial groove in communication with a pressure oil circulation systems.
Claim 11
Dependent Claim
21 words
A bearing assembly according to claim 9, wherein the offset is effectively formed by a bushing inserted into the housing bore.
Claim 12
Dependent Claim
32 words
A bearing assembly with a housing according to claim 1, wherein the flange bushings slide with the outer diameters in an offset formed within a housing bore and thus forming annular pistons.
References Cited (Backward Citations)
US1946439A
Cited
US1982265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |