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:
Mar. 14, 1978
Filed:
Nov. 17, 1976
Applicant:
Inventor:
James W Richmond, Charlotte, NC (US);
Assignee:
General Time Corporation, Thomaston, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 51 ; 310 / ; 310156 ; 310 15 ;
Abstract
A slug is disposed adjacent a rotor of an induction type motor. The slug is of a 'ferrous' material such that the attraction between it and the magnetic poles of the rotor creates at least side and preferably both side and end loading of opposed ends of the rotor shaft within its supporting bearings. The slug, disposed stationarily in spaced relation to the rotor, is of a length approximately equal to the length of a chord through adjacent magnetic poles. The action of the slug is to reduce bearing rattle in a rotating member.