US4935654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial magnet bearing
Assignee: ABB AG
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Filing: 1988-11-25
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Granted: 1990-06-19
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Expires: 2008-11-25
Abstract
Abstract In an axial magnet bearing having an axial bearing disc, the axial bearing disc is constructed as a fan impeller for conveying a gaseous coolant. In this way, an effective cooling of the magnet bearing is achieved with a simple structure and, at the same time, it is possible to cool further heat-releasing elements, assemblies or units with the aid of a coolant flow promoted by the axial bearing disc.
Inventors
- 👤 Dieter Glass
- 👤 Wilfried Eixelsberger
- 👤 Peter Buhrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
F; F16; F16C; F16C37/00; F16C37/005; F16C32/00; F16C32/04; F16C32/0406; F16C32/044; F16C32/047; F16C32/0474; F16C32/0476; H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/20; H02K5/207; H02K7/00; H02K7/003; H02K9/00; H02K9/14; H02K9/18; F16C32/0459; F16C32/0468
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
85 words
Axial magnet bearing assembly, comprising an axial magnet bearing having an axial bearing disc for cooperating with at least one electromagnet, said axial bearing disc having a central mounting hub for mounting a shaft to be supported therein, said axial bearing disc having at least one peripheral axial bearing surface, and said axial bearing disc having ducts formed therein essentially extending in a radial direction from the vicinity of said mounting hub to the periphery of said axial bearing disc for conveying a gaseous coolant.
Claim 2
Dependent Claim
85 words
Axial magnet bearing assembly, comprising an axial magnet bearing having an axial bearing disc for cooperating with at least one electromagnet, said axial bearing disc having a central mounting hub for mounting a shaft to be supported therein, said axial bearing disc having at least one peripheral axial bearing surface, and said axial bearing disc having ducts formed therein essentially extending in a radial direction from the vicinity of said mounting hub to the periphery of said axial bearing disc for conveying a gaseous coolant.
Claim 3
Dependent Claim
71 words
Axial magnet bearing assembly according to claim 1, wherein said axial bearing disc includes a circular base disc and a circular top disc bordering said ducts in the axial direction, and radial vanes bordering said ducts in the radial direction, said at least one peripheral axial bearing surface being in the form of an axial, bearing surface disposed on said base disc and axial bearing surface disposed on said top disc.
Claim 4
Dependent Claim
22 words
Axial magnet bearing assembly according to claim 2, wherein said radial vanes are bent backwards, as seen in the direction of rotation.
Claim 5
Dependent Claim
22 words
Axial magnet bearing assembly according to claim 1, wherein each of said ducts are include substantially radially and axially extending straight segments.
Claim 6
Dependent Claim
20 words
Axial magnet bearing assembly according to claim 4, wherein said ducts are bore holes formed in said axial bearing disc.
Claim 7
Dependent Claim
39 words
Axial magnet bearing assembly according to claim 1, including a drive having an interior in which said magnet bearing is disposed, a ring channel surrounding said axial bearing disc, and guide vanes extending essentially radially in said ring channel.
Claim 8
Dependent Claim
14 words
Axial magnet bearing assembly according to claim 6, wherein said drive is an electromotor.
Claim 9
Dependent Claim
55 words
Axial magnet bearing assembly according to claim 3, including a drive having an interior in which said axial magnet bearing is disposed, a ring channel surrounding said axial bearing disc, and guide vanes extending essentially radially in said ring channel, said guide vanes having a bend being opposite to said bend of said radial vanes.
Claim 10
Dependent Claim
69 words
Axial magnet bearing assembly, comprising an axial magnet bearing having an axial bearing disc for cooperating with at least one electromagnet, said axial bearing disc having a central mounting hub for mounting a shaft to be supported therein, and said axial bearing disc having at least one peripheral axial bearing surface, and axially conveying impeller vanes disposed on said axial bearing surface of said disc for a gaseous coolant.
Claim 11
Dependent Claim
69 words
Axial magnet bearing assembly, comprising an axial magnet bearing having an axial bearing disc for cooperating with at least one electromagnet, said axial bearing disc having a central mounting hub for mounting a shaft to be supported therein, and said axial bearing disc having at least one peripheral axial bearing surface, and axially conveying impeller vanes disposed on said axial bearing surface of said disc for a gaseous coolant.
Claim 12
Dependent Claim
14 words
Axial magnet bearing assembly according to claim 9, wherein said impeller vanes are straight.
Claim 13
Dependent Claim
26 words
Axial magnet bearing assembly according to claim 10, wherein said impeller vanes are mounted in an even distribution about the periphery of said axial bearing disc.
Claim 14
Dependent Claim
88 words
Axial magnet bearing assembly according to claim 2, including a drive having a housing with an inner wall surface and an interior in which said axial magnet bearing is disposed, and support discs connected to said housing wall for holding electromagnets, said impeller vanes being surrounded with little play in the radial direction by said inner wall surface of said housing, and said support discs having through openings for the gaseous coolant formed therein in front of and behind said impeller vanes, as seen in coolant flow direction.
Claim 15
Dependent Claim
14 words
Axial magnet bearing assembly according to claim 12, wherein said drive is an electromotor.
Claim 16
Dependent Claim
16 words
Axial magnet bearing assembly according to claim 12, including guide vanes disposed in said through openings.
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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) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |