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:
Apr. 29, 2008
Filed:
Mar. 16, 2006
Applicant:
Hiroshi Yoshida, Obama, JP;
Inventor:
Hiroshi Yoshida, Obama, JP;
Assignee:
Nidec Shibaura Corporation, Fukui, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An invention is provided wherein the bearings of a molded motor do not become electro-eroded. An inner rotor type, brushless DC motoris provided having a statorwhich has a stator corewound with a coil, a housingformed by covering the outside surfaces of the motorwith an unsaturated polyester, molding resin having electrical insulating properties, and an earth electrodemade of metal, installed to go through a metal bracketand the housingto reach the stator core, such that electric current flows from the stator coreand the bracketto the exterior, preventing electro-erosion and resulting deterioration of bearings