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:
Dec. 02, 2003
Filed:
Nov. 26, 2001
Applicant:
Inventor:
Keiji Inoue, Hamana-gun, JP;
Assignee:
Asmo Co., Ltd., Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01R 3/904 ;
U.S. Cl.
CPC ...
H01R 3/904 ;
Abstract
A dynamo-electric machine includes a commutator secured around a rotatable shaft and a plurality of carbon brushes placed in sliding contact with the commutator. The commutator has a sliding contact surface placed in sliding contact with the carbon brushes. The sliding contact surface of the commutator has a plurality of peaks and valleys that are substantially regularly and alternately arranged in both axial and circumferential directions of the commutator.