Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takayoshi Otani0
Yasuyuki Wakahara0
Yoichi Sakaura0
Youichi Murakami0
Kyoji Inukai0
Masami Niimi0
Mitsuo Ikeda0
Naoki Morita0
Date of Patent
November 13, 2007
0Patent Application Number
102797760
Date Filed
October 24, 2002
0Patent Primary Examiner
Patent abstract
A brush body 4 of a metal-graphite brush 2 is composed of a commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite and copper but does not contain any metal sulfide solid lubricant. A lead wire 10 is attached to the lead side portion 8 containing no metal sulfide solid lubricant.
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