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. 11, 2009
Filed:
Apr. 21, 2006
Naoto Sesita, Kawasaki, JP;
Katuyuki Tanaka, Kawasaki, JP;
Yusuke Mizukoshi, Kawasaki, JP;
Hiroyuki Kurihara, Fujisawa, JP;
Yoshihisa Watanabe, Kawasaki, JP;
Naoto Sesita, Kawasaki, JP;
Katuyuki Tanaka, Kawasaki, JP;
Yusuke Mizukoshi, Kawasaki, JP;
Hiroyuki Kurihara, Fujisawa, JP;
Yoshihisa Watanabe, Kawasaki, JP;
Igarashi Electric Works Ltd., , JP;
Abstract
A rotation control motor comprises a shaft, an armature having an armature core of which teeth are wound by wires to form coils, a commutator, and a field magnet. The armature core has a plurality of teeth, the commutator has a plurality of commutator segments corresponding to the number of teeth, and the coils comprise a normal coil and a brake coil. When the motor rotates faster than expected, the brake coil brakes the motor by magnetic flux, and the motor can rotate within a stable speed range.