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. 18, 2008
Filed:
Aug. 29, 2005
Takehito Tamaoka, Kyoto, JP;
Hiroaki Hirano, Kyoto, JP;
Masayoshi Saichi, Kyoto, JP;
Junichi Takatera, Kyoto, JP;
Takehito Tamaoka, Kyoto, JP;
Hiroaki Hirano, Kyoto, JP;
Masayoshi Saichi, Kyoto, JP;
Junichi Takatera, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A brushless motor as an example of the invention has a stationary assemblyhaving a first housing membermade of a ferromagnetic material and a statorheld in the first housing member, and a rotorhaving a rotor magnetfacing the stator. A annular shield plateheld by the rotoris disposed between the rotor magnetand the first housing memberand, further, an outer circumferential faceof the shield plateis disposed between a magnetically neutral areain the radial direction in the lower end of the rotor magnetand the outer circumferential face of the rotor magnet