US3603654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball bearing self-aligning seat
Assignee: Motors Liquidation Co
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Filing: 1970-03-23
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Granted: 1971-09-07
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Expires: 1990-03-23
Abstract
Abstract An externally pressurized gas bearing of the porous sleeve type is used to rotatably support one end of a rotor on an electric motor. The gas bearing housing in turn is mounted on a ball bearing having limited radial play and ball raceways of open curvature thus giving a limited self-alignment to the gas bearing. The ball bearing is normally inoperative due to an interposed frangible link, however, should the gas supply be interrupted during the operation of the motor, seizure of the rotor is prevented by a breaking of the link and rotation of the ball bearing.
Inventors
- 👤 Melvyn R Bird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0662; F16C32/067; F16C17/00; F16C17/12; F16C17/20; F16C23/00; F16C23/02; F16C23/04; F16C32/0603; F16C32/0614; F16C32/0618; H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/173; H02K5/1732; F16C2380/00; F16C2380/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
In a device having a casing and rotor wherein seizure of the rotor during operation of the device causes substantial damage to the device, a bearing mount for the rotor comprising in combination, a bearing member including a bearing sleeve having a circumferential surface spaced closely adjacent a generally cylindrical portion of said rotor, means to deliver has under pressure through said bearing sleeve to the space between said member and said rotor portion, said space being of sufficient thickness to permit said gas to develop a load-carrying gas film to rotatably support said rotor, ball bearing means disposed between said bearing member and said casing, said ball bearing means having limited radial play and open ball race curvatures whereby said bearing member is limitedly universally mounted on said casing for self-alignment with said rotor, and frangible link means interconnecting said casing and said cylindrical bearing member whereby seizure of the said rotor portion on said bearing sleeve breaks said frangible link means to permit rotation of said rotor through said ball bearing means.
Claim 2
Dependent Claim
174 words
In a device having a casing and rotor wherein seizure of the rotor during operation of the device causes substantial damage to the device, a bearing mount for the rotor comprising in combination, a bearing member including a bearing sleeve having a circumferential surface spaced closely adjacent a generally cylindrical portion of said rotor, means to deliver has under pressure through said bearing sleeve to the space between said member and said rotor portion, said space being of sufficient thickness to permit said gas to develop a load-carrying gas film to rotatably support said rotor, ball bearing means disposed between said bearing member and said casing, said ball bearing means having limited radial play and open ball race curvatures whereby said bearing member is limitedly universally mounted on said casing for self-alignment with said rotor, and frangible link means interconnecting said casing and said cylindrical bearing member whereby seizure of the said rotor portion on said bearing sleeve breaks said frangible link means to permit rotation of said rotor through said ball bearing means.
Claim 3
Dependent Claim
105 words
The combination comprising, a race having a first raceway, a generally annular housing concentric with said race, a second raceway on said housing and confronting said first raceway, a complement of antifriction element in said raceways, a frangible pin extending generally radially from one of said raceways and protruding in a hole in the other of said raceways whereby said race and annular housing are normally substantially nonrotatable with respect to each other, a permeable sleeve mounted on said housing on the side opposite said second raceway means, a plenum between said housing and said permeable sleeve, and fluid connector means leading to said plenum.
Claim 4
Dependent Claim
105 words
The combination comprising, a race having a first raceway, a generally annular housing concentric with said race, a second raceway on said housing and confronting said first raceway, a complement of antifriction element in said raceways, a frangible pin extending generally radially from one of said raceways and protruding in a hole in the other of said raceways whereby said race and annular housing are normally substantially nonrotatable with respect to each other, a permeable sleeve mounted on said housing on the side opposite said second raceway means, a plenum between said housing and said permeable sleeve, and fluid connector means leading to said plenum.
References Cited (Backward Citations)
US2278663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |