US3753016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing system for shafts driven by an electric motor
Assignee: Siemens AG
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Filing: 1972-03-17
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Granted: 1973-08-14
•
Expires: 1992-03-17
Abstract
Abstract For the bearing support of shafts driven at high speed, particularly shafts of centrifuges, either the rotor proper is of rotationally symmetric construction or is provided with rotationally symmetric extensions or appendages, the rotationally symmetric surfaces of which at least partly form supporting surfaces of an air bearing.
Inventors
- 👤 G Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:59
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/163; H02K7/00; H02K7/08; H02K7/083; H02K7/14; H02K7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
Bearing system for shafts driven by an electric motor having a rotor, comprising an air bearing rotationally symmetric means located on the rotor and having rotationally symmetric surfaces at least partly forming supporting surfaces for said air bearing, said air bearing having a casing, and the motor being flanged to said casing, and a shaft extending throUgh said air bearing casing and carrying a cylindrical part and a dis-shaped part thereon within said casing, said disc-shaped part serving to limit axial movement of said shaft.
Claim 2
Dependent Claim
85 words
Bearing system for shafts driven by an electric motor having a rotor, comprising an air bearing rotationally symmetric means located on the rotor and having rotationally symmetric surfaces at least partly forming supporting surfaces for said air bearing, said air bearing having a casing, and the motor being flanged to said casing, and a shaft extending throUgh said air bearing casing and carrying a cylindrical part and a dis-shaped part thereon within said casing, said disc-shaped part serving to limit axial movement of said shaft.
References Cited (Backward Citations)
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Cited
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US3110828A
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US3302048A
Cited
US3385985A
Cited
US3525003A
Cited
US3656017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |