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:
Jun. 21, 1994
Filed:
May. 15, 1992
Applicant:
Inventors:
Hiroshi Sakashita, Komagane, JP;
Eiji Arasaki, Komagane, JP;
Assignee:
Sankyo Seiki Mfg. Co., Ltd., Nagano, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 43 ; 310269 ;
Abstract
An armature core comprises a core element made of a magnetic material, wherein the core element has an annular portion. A plurality of salient poles are radially formed on the core element. A plurality of rib portions are formed on the salient poles, respectively; coils are wound around the rib portions. An insulating layer is formed on the surface of the core element. The insulating layer being provided with an area where surface of the core element excludes the insulating layer.