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. 30, 1982
Filed:
Feb. 29, 1980
Applicant:
Inventor:
Erland K Persson, Minneapolis, MN (US);
Assignee:
Electro-Craft Corporation, Hopkins, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 64 ; 310 61 ; 310154 ; 310218 ; 16510426 ;
Abstract
A DC motor utilizing flux focussing pole pieces and non-ferrous spacers to wedge the pole pieces and magnets into contact with the motor housing. Cooling is provided with heat pipes mounted in the spacers or pole pieces and/or the motor armature.