US4128280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-pressurizing floating gas bearing having a magnetic bearing therein
Assignee: Linde GmbH
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Filing: 1977-02-18
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Granted: 1978-12-05
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Expires: 1997-02-18
Abstract
Abstract The bearing is a composite bearing comprised of a self-pressurizing floating gas bearing and a permanent magnet bearing. The permanent magnet bearing serves to support the bearing body in spaced relation to the support body at least during the starting up of the bearing body from a standstill condition to a running down of the bearing body to the standstill position. The bearing may be constructed as a radial or thrust bearing. The permanent magnet bearing may be located within or without the gas bearing.
Inventors
- 👤 Werner Purtschert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/02; F16C17/03; F16C17/12; F16C17/24; F16C39/00; F16C39/06; F16C39/063; F16C39/066; F16C32/00; F16C32/04; F16C32/0406; F16C32/0408; F16C32/0423; F16C32/0427
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
76 words
A self-pressurizing floating gas bearing comprising a support body having a first bearing surface thereon; a bearing body having a second bearing surface facing said first bearing surface, said bearing body being movably mounted with respect to said support body; and an auxiliary permanent-magnet bearing forming a magnetic field to at least compensate the weight of said bearing body whereby, said bearing body exerts no pressure or only a negligible pressure on said first bearing surface.
Claim 2
Dependent Claim
76 words
A self-pressurizing floating gas bearing comprising a support body having a first bearing surface thereon; a bearing body having a second bearing surface facing said first bearing surface, said bearing body being movably mounted with respect to said support body; and an auxiliary permanent-magnet bearing forming a magnetic field to at least compensate the weight of said bearing body whereby, said bearing body exerts no pressure or only a negligible pressure on said first bearing surface.
Claim 3
Dependent Claim
21 words
A self-pressurizing floating gas bearing as set forth in claim 1 wherein said auxiliary bearing is disposed within said bearing surfaces.
Claim 4
Dependent Claim
39 words
A self-pressurizing floating gas bearing as set forth in claim 2 wherein said auxiliary bearing includes a first permanent magnet surrounding said bearing body and a second permanent magnet disposed in said support body below said first permanent magnet.
Claim 5
Dependent Claim
21 words
A self-pressurizing floating gas bearing as set forth in claim 1 wherein said auxiliary bearing is disposed outside said bearing surfaces.
Claim 6
Dependent Claim
60 words
A self-pressurizing floating gas bearing as set forth in claim 4 wherein said bearing body is rotatable about an axis perpendicular to said support body and has an axial extension on said axis, and wherein said auxiliary bearing includes a first permanent magnet on a free end of said extension and a stationarily mounted permanent magnet opposite said first magnet.
Claim 7
Dependent Claim
80 words
A self-pressurizing floating gas bearing as set forth in claim 4 wherein said support body has a pair of axially spaced apart annularly disposed bearing surfaces, said bearing body is rotatably mounted within said annularly disposed bearing surfaces to define a pair of gas bearings therebetween, and said auxiliary bearing includes at least one permanent surrounding said bearing body axially between said pair of gas bearings and a second permanent magnet disposed below said permanent magnet surrounding said bearing body.
Claim 8
Dependent Claim
61 words
A self-pressurizing floating gas bearing as set forth in claim 1 which further comprises a plurality of bearing segments mounted in said support body in spaced circumferential relation to said bearing body to define a gas bearing therebetween, at least the segment of said segments supporting most of the weight of said bearing body being a part of said auxiliary bearing.
Claim 9
Dependent Claim
38 words
A self-pressurizing floating gas bearing as set forth in claim 7 wherein said one segment is permanently magnetic and wherein said auxiliary bearing includes a permanent magnet surrounding said bearing body in opposed relation to said magnetic segment.
Claim 10
Dependent Claim
42 words
A self-pressurizing floating gas bearing as set forth in claim 7 wherein said auxiliary bearing includes a permanent magnet surrounding said bearing body and a permanent magnet in said one segment in opposed relation to said permanent magnet surrounding said bearing body.
Claim 11
Dependent Claim
41 words
A self-pressurizing floating gas bearing as set forth in claim 7 wherein said support body has a bearing seat receiving said one segment in spaced relation and which further comprises an auxiliary magnetic bearing between said one segment and said seat.
Claim 12
Dependent Claim
58 words
A self-pressurizing floating gas bearing as set forth in claim 10 wherein said one bearing segment has a pair of oppositely disposed bearing surfaces respectively facing said seat and said bearing body, a porous permanent magnet body forming at least a portion of one of said bearing surfaces, and a flow connection passing therethrough between said bearing surfaces.
Claim 13
Dependent Claim
88 words
A gas bearing comprising a support body having a first bearing surface, a shaft rotatably mounted with respect to said support body and having a second bearing surface facing said first bearing surface to define a gap for a flow of gas therebetween during rotation of said shaft; and an auxiliary permanent magnetic bearing forming a magnetic field to at least compensate the weight of said shaft whereby said shaft is spaced from said first bearing surface at start up from and run down to a standstill position.
Claim 14
Dependent Claim
88 words
A gas bearing comprising a support body having a first bearing surface, a shaft rotatably mounted with respect to said support body and having a second bearing surface facing said first bearing surface to define a gap for a flow of gas therebetween during rotation of said shaft; and an auxiliary permanent magnetic bearing forming a magnetic field to at least compensate the weight of said shaft whereby said shaft is spaced from said first bearing surface at start up from and run down to a standstill position.
Claim 15
Dependent Claim
24 words
A gas bearing as set forth in claim 12 wherein said bearing surfaces are disposed in concentric coaxial relation to form a radial bearing.
Claim 16
Dependent Claim
23 words
A gas bearing as set forth in claim 12 wherein said bearing surfaces are disposed in coaxial relation to form a thrust bearing.
Claim 17
Dependent Claim
56 words
A self-pressurizing floating gas bearing comprising a support body having a first bearing surface thereon; a bearing body having a second bearing surface facing said first bearing surface, said bearing body being movably mounted with respect to said support body; and an auxiliary permanent-magnet bearing neutralizing at least part of the weight of said bearing body.
Claim 18
Dependent Claim
56 words
A self-pressurizing floating gas bearing comprising a support body having a first bearing surface thereon; a bearing body having a second bearing surface facing said first bearing surface, said bearing body being movably mounted with respect to said support body; and an auxiliary permanent-magnet bearing neutralizing at least part of the weight of said bearing body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |