US4346949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor assembly provided with a bearing having virtually zero axial clearance
Assignee: Airbus Group SAS
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Filing: 1980-03-06
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Granted: 1982-08-31
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Expires: 2000-03-06
Abstract
Abstract Rotor assembly comprises a rotor and a bearing having inner and outer races with rolling elements disposed therebetween, one of the races being secured to the rotor and the other thereof being secured to a rotatable annular member concentric with the rotor. Magnetic means secured to each of the races cooperate to take up the axial clearance of the bearing, reducing it to virtually zero.
Inventors
- 👤 Jean-Francois Beau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:19
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/30; F16F15/315; F16F15/3156; F16C; F16C25/00; F16C25/06; F16C25/08; F16C25/086; F16C32/00; F16C32/04; F16C32/0406; F16C32/044; F16C32/0442; F16C39/00; F16C39/02; F16C2300/00; F16C2300/40; F16C2300/62; F16C2361/00; F16C2361/55
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
A rotor assembly comprising: a rotor adapted for rotation about a shaft; a bearing comprising inner and outer races concentric with said rotor and rolling members disposed to roll between said races; one of said races being secured to said rotor and the other thereof being secured to a rotatable annular member concentric with said rotor, said rotor and said annular member being longitudinally relatively displaceable to the extent of the axial clearance of said bearing; magnetic means secured to each of said rotor and said annular member, which means cooperate to maintain said rotor and said annular member longitudinally displaced by said axial clearance.
Claim 2
Dependent Claim
105 words
A rotor assembly comprising: a rotor adapted for rotation about a shaft; a bearing comprising inner and outer races concentric with said rotor and rolling members disposed to roll between said races; one of said races being secured to said rotor and the other thereof being secured to a rotatable annular member concentric with said rotor, said rotor and said annular member being longitudinally relatively displaceable to the extent of the axial clearance of said bearing; magnetic means secured to each of said rotor and said annular member, which means cooperate to maintain said rotor and said annular member longitudinally displaced by said axial clearance.
Claim 3
Dependent Claim
28 words
A rotor assembly in accordance with claim 1, wherein each of said magnetic means is a magnetic ring, said rings being axially displaced and concentric with said rotor.
Claim 4
Dependent Claim
51 words
A rotor assembly in accordance with claim 2 wherein said inner race is secured to said annular member through one of said magnetic rings; and wherein said annular member is adapted to contact a stop piece associated with said shaft to limit axial movement of said rotor assembly along said shaft.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |