The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2003
Filed:
Sep. 17, 2001
Applicant:
Inventors:
Boris A. Shoykhet, Beachwood, OH (US);
Burt Xudong Zhang, Twinsburg, OH (US);
David Infante Driscoll, South Euclid, OH (US);
Assignee:
Reliance Electric Technologies, LLC, Mayfield Heights, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/00 ;
U.S. Cl.
CPC ...
H02K 9/00 ;
Abstract
A rotating coupling allows a vacuum chamber in the rotor of a superconducting electric motor to be continually pumped out. The coupling consists of at least two concentric portions, one of which is allowed to rotate and the other of which is stationary. The coupling is located on the non-drive end of the rotor and is connected to a coolant supply and a vacuum pump. The coupling is smaller in diameter than the shaft of the rotor so that the shaft can be increased in diameter without having to increase the size of the vacuum seal.