US4451110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine bearing
Assignee: Safran Aircraft Engines SAS
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Filing: 1982-04-26
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Granted: 1984-05-29
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Expires: 2002-04-26
Abstract
Abstract The outside retainer of the bearing is mounted at the end of a relatively elastic squirrel cage attached by a flange to a rigid support; the radial movements of the retainer are limited by an annular stop. In accordance with the invention, parts are arranged so as also to serve as stops for the circumferential and axial movements of the bearing.
Inventors
- 👤 Alexandre Forestier
- 👤 Alain M. J. Lardellier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:49
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F16; F16C; F16C27/00; F16C27/04; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2360/00; F16C2360/23
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A bearing assembly comprising: a stationary support; an outside bearing retainer; a squirrel cage assembly elastically connecting said outside retainer to said support; and an annular stop unitarily formed with said support, said annular stop including a portion surrounding a portion of said outside retainer, with a predetermined radial clearance therebetween, wherein said portion of said outside retainer comprises first radial teeth on said outside retainer, wherein said portion of said stop comprises second radial teeth on said stop and circumferentially interlocking with said first radial teeth with a predetermined circumferential clearance therebetween, and wherein said portion of said stop further comprises two sets of third radial teeth, said sets being axially spaced by the axial thickness of said first radial teeth plus twice a predetermined axial clearance between said first and third radial teeth, and with said first radial teeth positioned between said sets, whereby circumferential and axial movements of said race are limited.
Claim 2
Dependent Claim
155 words
A bearing assembly comprising: a stationary support; an outside bearing retainer; a squirrel cage assembly elastically connecting said outside retainer to said support; and an annular stop unitarily formed with said support, said annular stop including a portion surrounding a portion of said outside retainer, with a predetermined radial clearance therebetween, wherein said portion of said outside retainer comprises first radial teeth on said outside retainer, wherein said portion of said stop comprises second radial teeth on said stop and circumferentially interlocking with said first radial teeth with a predetermined circumferential clearance therebetween, and wherein said portion of said stop further comprises two sets of third radial teeth, said sets being axially spaced by the axial thickness of said first radial teeth plus twice a predetermined axial clearance between said first and third radial teeth, and with said first radial teeth positioned between said sets, whereby circumferential and axial movements of said race are limited.
Claim 3
Dependent Claim
44 words
The bearing of claim 1 wherein said second radial teeth are positioned in the circumferential spaces between said first radial teeth, said second radial teeth having an axial thickness greater than said axial thickness of said first radial teeth plus twice said predetermined play.
Claim 4
Dependent Claim
20 words
The bearing of claims 1 or 2 wherein said second radial teeth form right parallelipipeds fixed to said annular stop.
References Cited (Backward Citations)
DE809864C
Cited
US2875001A
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US3205024A
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FR1342674A
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FR1346653A
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US3332726A
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FR1424222A
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US3485538A
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GB1284602A
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US3652139A
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US4084861A
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FR2439331A1
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GB2058245A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |