Patent US5130588A successfully refreshed from Google Patents.
US5130588A
Expired / Lapsed
US
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Cylindrical composite superconductor bearing
Assignee: Honeywell International Inc
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Filing: 1991-02-06
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Granted: 1992-07-14
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Expires: 2011-02-06
Abstract
Abstract A cylindrical superconductor bearing is made of Type II ceramic superconductor, dispersed in an acrylic thermoplastic carrier in a ratio between 1:1 and 3:1 by volume. The cylindrical superconductor bearing is particularly useful as a magnetic journal bearing.
Inventors
- 👤 Timothy R. Armstrong
- 👤 John R. Esopa
- 👤 II Thomas K. Rigney
- 👤 Marshall P. Saville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:14
CPC Classifications
H; H02; H02N; H02N15/00; H02N15/04; F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/0408; F16C32/0436; F16C32/0438; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
A magnetic bearing system comprising: a pair of relatively rotatable members; a hollow cylinder of superconducting composite having a Type II superconductor powder and an acrylic thermoplastic blended in a ratio between 1:1 and 3:1 by volume, said cylinder attached to one of said relatively rotatable members; and means for generating a magnetic field symmetric about the axis of rotation of said relatively rotatable members, said means attached to the second of said relatively rotatable members and coaxially disposed within said cylinder of superconductor composite.
Claim 2
Dependent Claim
85 words
A magnetic bearing system comprising: a pair of relatively rotatable members; a hollow cylinder of superconducting composite having a Type II superconductor powder and an acrylic thermoplastic blended in a ratio between 1:1 and 3:1 by volume, said cylinder attached to one of said relatively rotatable members; and means for generating a magnetic field symmetric about the axis of rotation of said relatively rotatable members, said means attached to the second of said relatively rotatable members and coaxially disposed within said cylinder of superconductor composite.
Claim 3
Dependent Claim
32 words
The magnetic bearing system of claim 1, wherein said superconductor composite has a volume percentage of said ceramic superconductor in the range between about fifty and seventy percent of said superconductor composite.
Claim 4
Dependent Claim
25 words
The magnetic bearing system of claim 1 wherein said ceramic superconductor powder has a median particle size in the range between 600 and 800 microns.
Claim 5
Dependent Claim
37 words
The magnetic bearing system of claim 1 wherein said ceramic superconductor powder is Yttrium-Barrium-Copper-Oxide having an atomic formula YBa 2 Cu 3 O 7 and a particle distribution of between 20 microns and 1 mm in size.
Claim 6
Dependent Claim
42 words
The magnetic bearing system of claim 4, wherein said superconductor composite has a volume percentage of said ceramic superconductor composite has a volume percentage of said ceramic superconductor in the range between about fifty five and sixty percent of said superconductor composite.
Claim 7
Dependent Claim
25 words
The magnetic bearing system of claim 4 wherein said ceramic superconductor powder has a median particle size in the range between 600 and 800 microns.
Claim 8
Dependent Claim
14 words
The magnetic bearing system of claim 1, wherein said acrylic thermoplastic is methyl methacrylate.
Claim 9
Dependent Claim
92 words
The magnetic bearing system of claim 1, further comprising: a second cylinder of superconducting composite having a ceramic superconductor powder and an acrylic thermoplastic blended in a ratio between 1:1 and 3:1 by volume, said second cylinder attached to the same one of said relatively rotatable members as said other cylinder; and second means for generating a magnetic field symmetric about the axis of rotation of said relatively rotatable members, said second means attached to the second of said relatively rotatable members and coaxially disposed within said second cylinder of superconductor composite.
Claim 10
Dependent Claim
34 words
The magnetic bearing system of claim 8, wherein said cylinders of superconductor composite have a volume percentage said ceramic superconductor in the range of between about fifty and seventy percent of said superconductor composite.
Claim 11
Dependent Claim
25 words
The magnetic bearing system of claim 8 wherein said ceramic superconductor powder has a median particle size in the range between 600 and 800 microns.
Claim 12
Dependent Claim
37 words
The magnetic bearing system of claim 8 wherein said ceramic superconductor powder is Yttrium-Barrium-Copper-Oxide having an atomic formula YBa 2 Cu 3 O 7 and a particle distribution of between 20 microns and 1 mm in size.
Claim 13
Dependent Claim
33 words
The magnetic bearing system of claim 11, wherein said superconductor composite has a volume percentage of said ceramic superconductor in the range between about fifty five and sixty percent of said superconductor composite.
Claim 14
Dependent Claim
26 words
The magnetic bearing system of claim 11 wherein said ceramic superconductor powder has a median particle size in the range of between 600 and 800 microns.
Claim 15
Dependent Claim
36 words
The magnetic bearing system of claim 1, wherein said means for generating a magnetic field is a cylindrical magnet magnetized axially, said cylindrical magnet mounted coaxially with said axis of rotation of said relatively rotatable members.
Claim 16
Dependent Claim
33 words
The magnetic bearing system of claim 8, wherein said means for generating said magnetic fields is a pair of cylindrical magnets magnetized axially, said cylindrical magnets mounted coaxially within said relatively rotatable members.
Claim 17
Dependent Claim
39 words
The magnetic bearing system of claim 1, wherein said member including said means for generating said magnetic field is a rotating assembly and said member including said cylinder of superconductor composite is a housing assembly containing said rotating assembly.
Claim 18
Dependent Claim
39 words
The magnetic bearing system of claim 8, wherein said member including said means for generating said magnetic fields is a rotating assembly and said member including said cylinders of superconductor composite is a housing assembly containing said rotating assembly.
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) | 1995-07-14 | 1996-01-13 | 1996-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-14 | 2000-01-13 | 2000-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-14 | 2004-01-13 | 2004-07-14 | $7700.00 | Window Closed / Lapsed |