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:
Jan. 31, 1984
Filed:
Sep. 19, 1978
Applicant:
Inventor:
Yoshio Kishi, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 45 ; 310 / ; 310156 ; 310268 ; 310D / ;
Abstract
A stator yoke for a DC brushless motor is comprised of a layer of insulating material of a predetermined thickness and a layer of magnetically permeable material which are bonded to each other by adhesive or the like. The magnetically permeable layer can be composed of several steel plates, preferably of silicon steel, bonded to each other. The insulating layer in one embodiment is composed of a cloth-like material, for example, of glass fibers, and a cured adhesive filling the interstices of the cloth-like material and bonding the insulating layer to the magnetically permeable layer.