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:
Jun. 01, 2004
Filed:
Apr. 04, 2003
Applicant:
Inventors:
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/300 ; H01R 3/904 ;
U.S. Cl.
CPC ...
H02K 1/300 ; H01R 3/904 ;
Abstract
A direct current motor includes a stator generating a magnetic field therein and a rotor having an armature and rotating inside the stator. A commutator for supplying electric current to the armature is connected to the rotor. The commutator is composed of plural commutator segments bonded together with an insulating resin material. Each commutator segment includes an anchor portion formed at a radial inside and a projecting portion extending in an axial direction, and both portions are embedded in the insulating resin. The commutator segments are firmly bonded with the insulating resin, and the bonding strength is increased without enlarging the commutator size.