US4119874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing arrangement for elongated electric motors
Assignee: Centrilift Hughes Inc
•
Filing: 1977-02-11
•
Granted: 1978-10-10
•
Expires: 1997-02-11
Abstract
Abstract An elongated electric motor having an annular stator comprising a plurality of magnetic laminations and a rotor on a shaft comprising a plurality of segments in said stator with a plurality of bearing means supporting said shaft and rotor, the bearing means including journal portions adjacent the stator with a groove therein in which a spring is disposed. The spring frictionally engages the stator and the bearings and prevents rotation of the bearing because of the magnetic field of the stator.
Inventors
- 👤 John Andrew Beavers
- 👤 Billy O. Dillion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:26
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/08; F16C35/00; F16C35/02; F16C2380/00; F16C2380/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
An elongated electric motor comprising: a housing; a homogeneous stator composed of a plurality of generally annular magnetic laminations, said stator being mounted in said housing; a shaft rotatably mounted within said stator; a generally cylindrical rotor composed of spaced apart rotor sections mounted on said shaft; a plurality of spaced bearing means between adjacent rotor sections and supporting said shaft; each of said bearing means having a ring portion engaging said stator; each said ring portion having a groove therein intermediate its ends, the open portion of which faces said stator; and elongated spring means in said groove in contact with said stator and said ring portion preventing rotation of said bearing means with said shaft because of the magnetic field of the stator.
Claim 2
Dependent Claim
125 words
An elongated electric motor comprising: a housing; a homogeneous stator composed of a plurality of generally annular magnetic laminations, said stator being mounted in said housing; a shaft rotatably mounted within said stator; a generally cylindrical rotor composed of spaced apart rotor sections mounted on said shaft; a plurality of spaced bearing means between adjacent rotor sections and supporting said shaft; each of said bearing means having a ring portion engaging said stator; each said ring portion having a groove therein intermediate its ends, the open portion of which faces said stator; and elongated spring means in said groove in contact with said stator and said ring portion preventing rotation of said bearing means with said shaft because of the magnetic field of the stator.
Claim 3
Dependent Claim
38 words
A motor as in claim 1 in which said bearing means comprises a sleeve portion surrounding said shaft and said ring portion engaging said stator, said sleeve portion and said ring portion being connected by a radial web.
Claim 4
Dependent Claim
16 words
A motor as in claim 2 in which said spring member is a corrugated metal member.
Claim 5
Dependent Claim
24 words
A motor as in claim 2 in which said spring member permits shaft elongation due to heat differential between said shaft and said stator.
Claim 6
Dependent Claim
14 words
A motor as in claim 1 wherein said bearing means comprises a non-magnetic material.
References Cited (Backward Citations)
GB155633A
Cited
US1464386A
Cited
US2315917A
Cited
US2781464A
Cited
US3136905A
Cited
US3506861A
Cited
US3551714A
Cited
US3823991A
Cited
US3980352A
Cited
US4006659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |