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:
Aug. 25, 1992
Filed:
Oct. 19, 1990
Applicant:
Inventors:
Boyd B Moore, Houston, TX (US);
Moye Wicks, III, Houston, TX (US);
Assignee:
Shell Oil Company, , US;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H02K / ; H02K / ; H02K / ;
U.S. Cl.
CPC ...
310261 ; 310 43 ; 310156 ; 310217 ; 310 87 ;
Abstract
A permanent magnet motor for operation at elevated temperatures wherein the magnets are clamped to the motor shaft by means of high temperature plastic bushings. The bushings have a coefficient of thermal expansion that exceeds the coefficient of thermal expansion of the motor shaft.