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Title: Magnetically leviated superconducting bearing

Abstract

A magnetically levitated superconducting bearing includes a magnet (2) mounted on a shaft (12) that is rotatable around an axis of rotation and a Type II superconductor (6) supported on a stator (14) in proximity to the magnet (2). The superconductor (6) is positioned so that when it is cooled to its superconducting state in the presence of a magnetic field, it interacts with the magnet (2) to produce an attractive force that levitates the magnet (2) and supports a load on the shaft (12). The interaction between the superconductor (6) and magnet(2) also produces surface screening currents (8) that generate a repulsive force perpendicular to the load. The bearing also has means for maintaining the superconductor at a temperature below its critical temperature (16, 18). The bearing could also be constructed so the magnet (2) is supported on the stator (14) and the superconductor (6) is mounted on the shaft (12). The bearing can be operated by cooling the superconductor (6) to its superconducting state in the presence of a magnetic field.

Inventors:
 [1];  [2]
  1. (Avon, CT)
  2. (Glastonbury, CT)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
868985
Patent Number(s):
US 5256638
Assignee:
United Technologies Corporation (Hartford, CT) ANL
DOE Contract Number:  
ACK-85109
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
magnetically; leviated; superconducting; bearing; levitated; magnet; mounted; shaft; 12; rotatable; axis; rotation; type; ii; superconductor; supported; stator; 14; proximity; positioned; cooled; presence; magnetic; field; interacts; produce; attractive; force; levitates; supports; load; interaction; produces; surface; screening; currents; generate; repulsive; perpendicular; means; maintaining; temperature; below; critical; 16; 18; constructed; operated; cooling; superconducting bearing; temperature below; critical temperature; magnetic field; magnetically levitated; type ii; ii superconductor; tractive force; attractive force; /505/310/

Citation Formats

Weinberger, Bernard R., and Lynds, Jr., Lahmer. Magnetically leviated superconducting bearing. United States: N. p., 1993. Web.
Weinberger, Bernard R., & Lynds, Jr., Lahmer. Magnetically leviated superconducting bearing. United States.
Weinberger, Bernard R., and Lynds, Jr., Lahmer. Fri . "Magnetically leviated superconducting bearing". United States. doi:. https://www.osti.gov/servlets/purl/868985.
@article{osti_868985,
title = {Magnetically leviated superconducting bearing},
author = {Weinberger, Bernard R. and Lynds, Jr., Lahmer},
abstractNote = {A magnetically levitated superconducting bearing includes a magnet (2) mounted on a shaft (12) that is rotatable around an axis of rotation and a Type II superconductor (6) supported on a stator (14) in proximity to the magnet (2). The superconductor (6) is positioned so that when it is cooled to its superconducting state in the presence of a magnetic field, it interacts with the magnet (2) to produce an attractive force that levitates the magnet (2) and supports a load on the shaft (12). The interaction between the superconductor (6) and magnet(2) also produces surface screening currents (8) that generate a repulsive force perpendicular to the load. The bearing also has means for maintaining the superconductor at a temperature below its critical temperature (16, 18). The bearing could also be constructed so the magnet (2) is supported on the stator (14) and the superconductor (6) is mounted on the shaft (12). The bearing can be operated by cooling the superconductor (6) to its superconducting state in the presence of a magnetic field.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1993},
month = {Fri Jan 01 00:00:00 EST 1993}
}

Patent:

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