US4639146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust bearing
Assignee: Hitachi Ltd
•
Filing: 1984-04-13
•
Granted: 1987-01-27
•
Expires: 2004-04-13
Abstract
Abstract A thrust bearing has a plurality of bearing pads each provided on its back side with a pivot, and a support on which the pads are disposed in the circumferential direction. An integral carrier is mounted on the support. The carrier has leg portions and a resilient portion and definies a squeeze film damper portion between the rear surface thereof and the opposing surface of the support. The pads are carried tiltably by the carrier through the pivots.
Inventors
- 👤 Masahiro Yoshioka
- 👤 Hideki Izumi
- 👤 Hiroshi Inouye
- 👤 Eiichi Hazaki
- 👤 Shiro Nakadaira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:56
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/04; F16C17/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
A thrust bearing of the type having a plurality of bearing pads, pivots being provided on a back side of said bearing pads, an annular carrier having supporting legs and a resilient portion between said supporting legs, a plurality of apertures being provided in said resilient portion, and support means for said annular carrier, wherein a rear side of said resilient portion, said supporting legs and said support means define a squeeze film damper gap.
Claim 2
Dependent Claim
75 words
A thrust bearing of the type having a plurality of bearing pads, pivots being provided on a back side of said bearing pads, an annular carrier having supporting legs and a resilient portion between said supporting legs, a plurality of apertures being provided in said resilient portion, and support means for said annular carrier, wherein a rear side of said resilient portion, said supporting legs and said support means define a squeeze film damper gap.
Claim 3
Dependent Claim
41 words
A thrust bearing according to claim 1, wherein said supporting legs comprise a peripherally extending supporting leg provided on a radially inward side of said carrier, and a peripherally extending supporting leg provided on a radially outward side of said carrier.
Claim 4
Dependent Claim
37 words
A thrust bearing according to claim 1, wherein said supporting legs comprise a first radially extending support leg and a second radially extending support legs, said first and second support legs being spaced peripherally from each other.
Claim 5
Dependent Claim
35 words
A thrust bearing according to either one of claims 2 or 3, wherein the gap is variable by means of a spacer provided on said support means opposite the rear side of said resilient portion.
Claim 6
Dependent Claim
32 words
A thrust bearing according to claim 4, wherein a multiplicity of squeeze film damper portions are formed in the gap by means of a plurality of integral carriers placed one on another.
References Cited (Backward Citations)
US1425979A
Cited
CA566741A
Cited
US1438053A
Cited
US1684693A
Cited
DE720909C
Cited
FR1010959A
Cited
AT178767B
Cited
US3033619A
Cited
US3011839A
Cited
DE1177421B
Cited
GB1039434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |