Patent ID: 6657355
Filing Date: 2003-12-02
Classification: H01R

Abstract:
A plane commutator comprising:a plurality of commutator segments made of carbon compound spaced apart from each other having a disk-like commutator surface at an end thereof and a base portion at the other end, each said commutator segments having a projection extending from said base portion; a resinous boss member disposed in contact with said base portion to support said plurality of commutator segments; and a plurality of metal base plates, each said base plate having an engagement portion in contact with one of said commutator segments, and a terminal portion extending along an outer periphery of said boss member; wherein said engagement portion has an expansible sleeve extending along said projection of one of said commutator segments over a length which is greater than the thickness of said base plate to provide a surface for receiving said projection under pressure, and each of said projections includes metal powder at a portion in contact with one of said through holes.