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:
Nov. 20, 2001
Filed:
Mar. 30, 2000
Takahiro Yamada, Toyohashi, JP;
Toshiyasu Ishizuka, Hamamatsu, JP;
Hisashi Masui, Kosai, JP;
Akihiro Suzuki, Kosai, JP;
Kazushi Sugishima, Hamamatsu, JP;
Asmo Co., Ltd., Shizuoka, JP;
Abstract
In a commutator of an armature of an electric motor, a plurality of segments are arranged on the outer peripheral surface of a commutator ring at equal angular intervals. The segments which are in the same phase and oppose with 180° angular interval are connected through a conductive plate. Each conductive plate is spaced apart a predetermined distance from adjacent ones in the axial direction not to short, and molded within the commutator ring. Each of brushes is shaped to have a width which is sufficient to bridge over three segments. Alternatively, the commutator ring may be shaped to have a tapering protrusion part (,) and the same-phase segments may be directly connected by a shorting wire along the tapering protrusion part.