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:
Aug. 10, 2010
Filed:
Dec. 27, 2006
Yoshiki Nakano, Hamamatsu, JP;
Masayuki Kuwano, Kosai, JP;
Shinji Santo, Kosai, JP;
Toshio Yamamoto, Kosai, JP;
Yoshiki Nakano, Hamamatsu, JP;
Masayuki Kuwano, Kosai, JP;
Shinji Santo, Kosai, JP;
Toshio Yamamoto, Kosai, JP;
ASMO Co., Ltd, Kosai-shi, Shizuoka-ken, JP;
Abstract
A commutator has a tabular holding portion defining a thickness direction. A plurality of segments are arranged in one end in the thickness direction of the holding portion in a radial pattern. Each of the segments has a slidable contact surface which is perpendicular to the thickness direction. A feeding brush is brought into slidable contact with the slidable contact surface. A tabular short-circuit unit short-circuits the segments to be set to the same electric potential with each other. The short-circuit unit is arranged parallel to the slidable contact surface. Accordingly, it is possible to enlarge a cross-sectional area which is perpendicular to a current passing direction of the coupling portion while suppressing an enlargement of a dimension in the axial direction of the commutator.