Patent US5270601A successfully refreshed from Google Patents.
US5270601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconducting composite magnetic bearings
Assignee: Honeywell International Inc
•
Filing: 1991-10-17
•
Granted: 1993-12-14
•
Expires: 2011-10-17
Abstract
Abstract A composite includes granules of Type II superconducting material and granules of rare-earth permanent magnets that are distributed in a binder. The composite is a two-phase structure that combines the properties of the superconductor and magnets with the flexibility and toughness of a polymeric material. A bearing made from this composite has the load capacity and stiffness of a permanent magnet bearing with added stability from a Type II superconducting material.
Inventors
- 👤 II Thomas K. Rigney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:47
CPC Classifications
H; H02; H02N; H02N15/00; H02N15/04; F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/0408; F16C32/0436; F16C32/0438; F16C2202/00; F16C2202/30; F16C2202/32; F16C2202/34; Y; Y10; Y10S; Y10S505/00; Y10S505/775; Y10S505/785; Y10S505/825; Y10S505/879
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
84 words
A bearing comprising: magnetic means for providing first lines of flux; and at least one member made of a superconducting composite including Type II superconducting granules, permanent magnet granules and binding means for binding the superconducting granules and the magnetic granules, said permanent magnet granules being aligned in substantially the same direction and providing second lines of flux, said at least one member being in proximity of said magnetic means such that said second lines of flux interact with said first lines of flux.
Claim 2
Dependent Claim
84 words
A bearing comprising: magnetic means for providing first lines of flux; and at least one member made of a superconducting composite including Type II superconducting granules, permanent magnet granules and binding means for binding the superconducting granules and the magnetic granules, said permanent magnet granules being aligned in substantially the same direction and providing second lines of flux, said at least one member being in proximity of said magnetic means such that said second lines of flux interact with said first lines of flux.
Claim 3
Dependent Claim
16 words
A bearing according to claim 1, wherein said permanent magnet granules are rare-earth permanent magnet granules.
Claim 4
Dependent Claim
18 words
A bearing according to claim 1, wherein said Type II superconducting granules include extreme Type II superconducting granules.
Claim 5
Dependent Claim
18 words
A bearing according to claim 3, wherein said extreme Type II superconducting granules include granules of Yttrium-Barium-Copper oxide.
Claim 6
Dependent Claim
31 words
A bearing according to claim 1, wherein each of said at least one members has at least one surface, and wherein said superconducting granules have a high concentration near said surfaces.
Claim 7
Dependent Claim
13 words
A bearing according to claim 1, wherein said binding means includes thermoplastic resin.
Claim 8
Dependent Claim
13 words
A bearing according to claim 1, wherein said binding means includes cryogenic epoxy.
Claim 9
Dependent Claim
41 words
A bearing according to claim 1, wherein said magnetic means includes at least one permanent magnet, and wherein grains of said at least one permanent magnet are aligned in substantially the same direction as the poles of said permanent magnet granules.
Claim 10
Dependent Claim
17 words
A bearing according to claim 8, wherein at least one permanent magnet is a rare-earth permanent magnet.
Claim 11
Dependent Claim
26 words
A bearing according to claim 8, wherein a stator includes said at least one member and wherein a rotor includes said at least one permanent magnet.
Claim 12
Dependent Claim
50 words
A bearing according to claim 8, wherein at least one of said permanent magnets includes an annular magnet having first and second sides, and wherein said at least one member includes a first disk that is disposed opposite said first side of said annular magnet, whereby said bearing is single-acting.
Claim 13
Dependent Claim
33 words
A bearing according to claim 11, wherein said at least one member further includes a second disk that is disposed opposite said second side of said annular magnet, whereby said bearing is double-acting.
Claim 14
Dependent Claim
18 words
A bearing according to claim 12, wherein grains of said annular magnet are magnetized in an axial direction.
Claim 15
Dependent Claim
74 words
A bearing according to claim 8, wherein said magnetic means includes holding means having first and second ends, and first and second permanent magnet pellets that are magnetized axially, said first and second pellets being held at said first and second ends, respectively, of said holding means; and wherein said at least one member includes first and second disks that are disposed opposite said first and second pellets, respectively, whereby said bearing is double-acting.
Claim 16
Dependent Claim
14 words
A bearing according to claim 14, wherein said holding means includes a hollow shaft.
Claim 17
Dependent Claim
43 words
A bearing according to claim 8, wherein said at least one member includes a hollow cylinder; and wherein said at least one permanent magnet includes at least one pellet magnetized in an axial direction, said pellet being disposed for rotation within said cylinder.
Claim 18
Dependent Claim
43 words
A bearing according to claim 8, wherein said at least one member includes a hollow cylinder; and wherein said at least one permanent magnet includes at least one pellet magnetized in a radial direction, said pellet being disposed for rotation within said cylinder.
Claim 19
Dependent Claim
62 words
A journal bearing comprising: a stator including a hollow cylinder made of a composite including Type II superconducting granules and permanent magnet granules distributed in a binder; and a rotor, disposed for rotation within said hollow cylinder, including a permanent magnet pellet, wherein poles of said permanent magnet granules are aligned in the same direction as grains of said permanent magnet pellet.
Claim 20
Dependent Claim
62 words
A journal bearing comprising: a stator including a hollow cylinder made of a composite including Type II superconducting granules and permanent magnet granules distributed in a binder; and a rotor, disposed for rotation within said hollow cylinder, including a permanent magnet pellet, wherein poles of said permanent magnet granules are aligned in the same direction as grains of said permanent magnet pellet.
Claim 21
Dependent Claim
100 words
A thrust bearing comprising: a rotor including an annular permanent magnet that is magnetized in an axial direction, said annular magnet having first and second sides; and a stator including first and second disks made of a composite including Type II superconducting granules and permanent magnets granules distributed in a binder, said first disk being disposed opposite said first side of said annular permanent magnet, said second disk being disposed opposite said second side of said annular permanent magnet, wherein poles of said permanent magnet granules are aligned in the same direction as grains of said first and second disks.
Claim 22
Dependent Claim
100 words
A thrust bearing comprising: a rotor including an annular permanent magnet that is magnetized in an axial direction, said annular magnet having first and second sides; and a stator including first and second disks made of a composite including Type II superconducting granules and permanent magnets granules distributed in a binder, said first disk being disposed opposite said first side of said annular permanent magnet, said second disk being disposed opposite said second side of said annular permanent magnet, wherein poles of said permanent magnet granules are aligned in the same direction as grains of said first and second disks.
References Cited (Backward Citations)
US3614181A
Cited
US3779618A
Cited
US3791704A
Cited
US3890019A
Cited
US3784945A
Cited
US4072370A
Cited
US4340261A
Cited
US4620752A
Cited
US4717627A
Cited
US4797386A
Cited
US4942151A
Cited
US4939120A
Cited
US4892863A
Cited
US4954481A
Cited
US4917736A
Cited
US5126611A
Cited
US5130588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |