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:
Jan. 27, 2015
Filed:
Mar. 29, 2011
Syouzou Sakon, Osaka, JP;
Yasuharu Uchida, Osaka, JP;
Jiro Okubo, Fukui, JP;
Kazuo Toya, Osaka, JP;
Abstract
A dc motor includes a stator having multiple field magnet poles, and an armature having an armature core, armature coils, and a commutator, and brushes brought into contact with the commutator. The armature coils include concentrated winding coil units wound on respective teeth, and connecting wire units that electrically connect each of the concentrated winding coil units together. A segment group of the commutator includes a first segment and a second segment placed adjacent to each other, to which the concentrated winding coil units are connected, the segment group also includes a third segment disposed next to the adjacent placement, and only the connecting wire unit is connected to the third segment. The connecting wire units include connecting wire units that pass through slots and connect each of the concentrated winding coil units together.