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:
May. 12, 1992
Filed:
Oct. 26, 1990
Applicant:
Inventors:
Masakazu Ikegami, Matsudo, JP;
Ryouichi Someya, Matsudo, JP;
Assignee:
Mabuchi Motor Co., Ltd., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310233 ; 310 42 ; 310 45 ; 310 91 ; 310236 ; 310261 ;
Abstract
A rotor for miniature motors having a shaft serving as a rotating shaft, a commutator having commutator segments mounted on a commutator proper fixedly fitted to the shaft, a rotor core fixedly fitted to the shaft and having rotor windings wound thereon, a plurality of positioning bosses formed in such a manner as to protrude toward the side of the rotor core on the commutator proper, and a positioning groove, formed on the side surface of the rotor core, into which the positioning bosses are inserted; the commutator being fixedly fitted by press-fitting the positioning bosses into the positioning groove, characterized in that