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:
Dec. 05, 2000
Filed:
Nov. 09, 1998
Yuzuru Suzuki, Shizuoka-ken, JP;
Taketoshi Ohyashiki, Shizuoka-ken, JP;
Naoyuki Harada, Shizuoka-ken, JP;
Taichi Nishio, Shizuoka-ken, JP;
Minebea Co., Ltd., Kitasaku, JP;
Abstract
A brushless DC motor, having a rotor with a cylindrical rotor magnet supported rotationally by a shaft held by bearings mounted on a substantially planar base plate, and a stator supported by the base plate, and including a plurality of radially spaced salient poles holding stator coils formed by windings of magnet wire. Opposing surfaces of the rotor and each salient pole are defined by a first surface of a magnetic core of the salient pole, which is received in a bobbin, and a second surface of the magnetic core orthogonal to the first surface, and the rotor magnet has permanent magnet poles forming a first surface opposing the first surface of the magnetic core, and a second surface opposing the second surface of the magnetic core. A tip of each magnetic core is received through a hole formed in the base plate.