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:
Jan. 10, 2012
Filed:
Nov. 19, 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
A direct current motor includes: a stator () on which a plurality of coils () is provided; a rotor () including a plurality of permanent magnet magnetic poles () that is provided so as to face an inner periphery of the stator, and a pipe () on one end; a current-carrying portion () that is provided on the other end of the rotor () and commutates current supplied from a power source to the coils () on the stator (); a sleeve bearing () that holds the rotor (); and a ball bearing () that holds the rotor () and has a larger load-bearing capacity than that of the sleeve bearing (). Furthermore, the pipe () holds the ball bearing () and is in direct contact with the ball bearing ().