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:
Mar. 09, 1982
Filed:
Apr. 04, 1979
Applicant:
Inventor:
Takaichi Mabuchi, Matsudo, JP;
Assignee:
Mabuchi Motor Co. Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310221 ; 310233 ;
Abstract
A small electric motor having a plurality of commutator arcuate segments equally spaced in the direction of angular position on the rotating shaft of motor rotor, wherein conductive grease is coated on the commutator arcuate segments and the equally spaced gaps, and edges provided on the sliding portions of brushes are caused to press and contact the commutator by cutting the conductive grease film.