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:
Oct. 25, 2011
Filed:
Nov. 26, 2007
Masayuki Yokoyama, Chiyoda-ku, JP;
Youichi Fujita, Chiyoda-ku, JP;
Sotsuo Miyoshi, Chiyoda-ku, JP;
Naohiro Oketani, Chiyoda-ku, JP;
Masayuki Yokoyama, Chiyoda-ku, JP;
Youichi Fujita, Chiyoda-ku, JP;
Sotsuo Miyoshi, Chiyoda-ku, JP;
Naohiro Oketani, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
To provide a DC motor in which the rattling and the axial deviation of a rotor are restrained without increasing the axial dimension of the motor. This DC motor comprises a stator () on which coils () are provided, a rotor () so disposed as to be opposed to the inner periphery of the stator () and having magnetic poles, a current-carrying part provided at one end of the rotor () and transferring the current fed from a power supply to the coils () of the stator (), a sleeve bearing () holding the rotor (), and a ball bearing () holding the rotor () and having a load-carrying capacity larger than that of the sleeve bearing (). The outer ring of the ball bearing () is positioned by the stator (), and the inner ring of the ball bearing () is positioned by the rotor ().