US5554583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet design for high-speed superconducting bearings
Assignee: University of Chicago
•
Filing: 1994-09-08
•
Granted: 1996-09-10
•
Expires: 2014-09-08
Abstract
Abstract A high temperature superconducting bearing including a permanent magnet rotor levitated by a high temperature superconducting structure. The rotor preferably includes one or more concentric permanent magnet rings coupled to permanent magnet ring structures having substantially triangular and quadrangular cross-sections. Both alternating and single direction polarity magnet structures can be used in the bearing.
Inventors
- 👤 John R. Hull
- 👤 Kenneth L. Uherka
- 👤 Robert G. Abdoud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:52
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/0408; F16C32/0436; F16C32/0438; F16C2361/00; F16C2361/55; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/879
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
80 words
A high temperature superconducting bearing, comprising: a permanent magnet rotor levitated by a high temperature superconducting structure, said permanent magnet rotor comprising a plurality of concentric permanent magnet rings coupled to a plurality of first permanent magnet ring structures having substantially triangular cross-sections which are coupled to a second permanent magnet ring structure having a substantially quadrangular cross-section, said first and second ring structures having mating boundary faces enabling magnetic flux lines to pass substantially perpendicularly through said boundary faces.
Claim 2
Dependent Claim
80 words
A high temperature superconducting bearing, comprising: a permanent magnet rotor levitated by a high temperature superconducting structure, said permanent magnet rotor comprising a plurality of concentric permanent magnet rings coupled to a plurality of first permanent magnet ring structures having substantially triangular cross-sections which are coupled to a second permanent magnet ring structure having a substantially quadrangular cross-section, said first and second ring structures having mating boundary faces enabling magnetic flux lines to pass substantially perpendicularly through said boundary faces.
Claim 3
Dependent Claim
16 words
The bearing as defined in claim 1, further including concentric bands abutting said permanent magnet rings.
Claim 4
Dependent Claim
19 words
The bearing as defined in claim 2, wherein said concentric bands are dimensioned to compress said permanent magnet rings.
Claim 5
Dependent Claim
15 words
The bearing as defined in claim 2, wherein said concentric bands comprise a composite material.
Claim 6
Dependent Claim
13 words
The bearing as defined in claim 2, wherein said concentric bands comprise steel.
Claim 7
Dependent Claim
17 words
The bearing as defined in claim 2, wherein said concentric bands comprise a plurality of steel wires.
Claim 8
Dependent Claim
32 words
The bearing as defined in claim 1, wherein at least one of said first permanent magnet ring structures and said second permanent magnet ring structure comprises permanent magnet structures abutting concentric bands.
Claim 9
Dependent Claim
73 words
A high temperature superconducting bearing, comprising: a permanent magnet rotor levitated by a high temperature superconducting structure, said permanent magnet rotor comprising a plurality of concentric permanent magnet rings coupled to a plurality of first permanent magnet ring structures having substantially triangular cross-sections which are coupled to a second permanent magnet ring structure having a substantially quadrangular cross-section and comprising a plurality of substantially square structures and a plurality of substantially triangular structures.
Claim 10
Dependent Claim
73 words
A high temperature superconducting bearing, comprising: a permanent magnet rotor levitated by a high temperature superconducting structure, said permanent magnet rotor comprising a plurality of concentric permanent magnet rings coupled to a plurality of first permanent magnet ring structures having substantially triangular cross-sections which are coupled to a second permanent magnet ring structure having a substantially quadrangular cross-section and comprising a plurality of substantially square structures and a plurality of substantially triangular structures.
Claim 11
Dependent Claim
32 words
The bearing as defined in claim 8, wherein at least one of said first permanent magnet ring structures and said second permanent magnet ring structure comprises permanent magnet structures abutting concentric bands.
Claim 12
Dependent Claim
16 words
The bearing as defined in claim 8, further including concentric bands abutting said permanent magnet rings.
Claim 13
Dependent Claim
19 words
The bearing as defined in claim 10, wherein said concentric bands are dimensioned to compress said permanent magnet rings.
Claim 14
Dependent Claim
15 words
The bearing as defined in claim 10, wherein said concentric bands comprise a composite material.
Claim 15
Dependent Claim
13 words
The bearing as defined in claim 10, wherein said concentric bands comprise steel.
Claim 16
Dependent Claim
17 words
The bearing as defined in claim 10, wherein said concentric bands comprise a plurality of steel wires.
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) | 1999-09-10 | 2000-03-11 | 2000-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-10 | 2004-03-11 | 2004-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-10 | 2008-03-11 | 2008-09-10 | $7700.00 | Window Closed / Lapsed |