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:
Aug. 14, 2007
Filed:
Aug. 30, 2004
Kaname Egawa, Toyohashi, JP;
Toshio Yamamoto, Kosai, JP;
Keiichi Uemura, Kariya, JP;
Yasuhiro Toyama, Toyohashi, JP;
Shinji Santo, Toyohashi, JP;
Yoshiyuki Takabe, Hamamatsu, JP;
Takahiro Nakayama, Hamakita, JP;
Kaname Egawa, Toyohashi, JP;
Toshio Yamamoto, Kosai, JP;
Keiichi Uemura, Kariya, JP;
Yasuhiro Toyama, Toyohashi, JP;
Shinji Santo, Toyohashi, JP;
Yoshiyuki Takabe, Hamamatsu, JP;
Takahiro Nakayama, Hamakita, JP;
Asmo Co., Ltd., Shizuoka-Ken, JP;
Abstract
A motor includes a stator having magnets, a rotor having teeth, a commutator secured to the rotor, and brushes. A coil is wound about each tooth. The commutator is connected to the coils. The brushes slidably contact the commutator. The number of the magnets and the number of the teeth are determined such that the resultant of torque vectors that act on the teeth is zero. For example, the number of the magnet is six, and the number of the teeth is eight. As a result, the rotor is prevented from vibrating.