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. 12, 1985
Filed:
Nov. 03, 1983
Applicant:
Inventors:
Burley C Semones, Radford, VA (US);
Leon G Reiss, Dublin, VA (US);
Assignee:
Kollmorgen Technologies Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310156 ; 310 / ; 310217 ; 310261 ;
Abstract
In an electric motor of the type having a permanent magnet rotor which is subject to cogging torque, a plurality of skewed reluctance notches are cut in the outer diameter of the rotor laminations. The rotor laminations have first and second sets of axial openings which are filled respectively with rare earth magnet material and non-ferrous casting material.