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:
Jul. 22, 2014
Filed:
Mar. 27, 2012
Yoshiaki Takemoto, Toyohashi, JP;
Toshihiro Uchida, Nagoya, JP;
Seiya Yokoyama, Toyohashi, JP;
Shigemasa Kato, Toyohashi, JP;
Yoshiaki Takemoto, Toyohashi, JP;
Toshihiro Uchida, Nagoya, JP;
Seiya Yokoyama, Toyohashi, JP;
Shigemasa Kato, Toyohashi, JP;
ASMO Co., Ltd., Kosai-Shi, Shizuoka-Ken, JP;
Abstract
A motor in which drive current supplied to a winding is controlled in accordance with a rotational position of a rotor detected from a waveform of an induced voltage between phases. The motor is provided with a stator including 3×n teeth and windings for three phases. A rotor includes a rotor core, an n number of magnets, and an n number of salient poles. The magnets function as one of the magnetic poles, the salient poles function as the other one of the magnetic poles. Each salient pole is spaced apart by a gap from the adjacent ones of the magnets in the circumferential direction. The magnets and gap are arranged inward in the radial direction from the rotor core. An electrical angle between two ends of each magnet is set to be smaller than an electrical angle between two ends of each salient pole.