Metal-graphite brush
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United States of America Patent
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Jun 29, 2004
Grant Date -
May 22, 2003
app pub date -
Oct 24, 2002
filing date -
Oct 25, 2001
priority date (Note) -
Expired
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Abstract
A brush body 4 of a metal-graphite brush 2 is composed of a Pb-less commutator side portion 6 which contains graphite, copper and a metal sulfide solid lubricant, and a lead side portion 8 which contains graphite, copper, the metal sulfide solid lubricant and Pb.
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