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:
Nov. 13, 2012
Filed:
Feb. 22, 2008
Yasuhiro Yukitake, Kashiwara, JP;
Yasuhiro Yukitake, Kashiwara, JP;
JTEKT Corporation, Osaka-Shi, Osaka, JP;
Abstract
In a motor comprising a stator and a rotor disposed in an inner circumference of the stator, the stator comprises a substantially cylindrical stator core and coils made up of wound conductors, and the stator core comprises an outer circumferential portion which constitutes an outer circumferential wall of the stator and an inner circumferential portion round which the conductors are wound. The outer circumferential portion is formed of a first sintered metal made of a powder magnetic material, while the inner circumferential portion is formed of a second sintered metal made of a powder magnetic material, and the first sintered metal is a sintered metal having a higher mechanical strength than the second sintered metal. Additionally, the stator core is formed by diffusion bonding the outer circumferential portion and the inner circumferential portion being bonded together.