Metal-graphite brush
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United States of America Patent
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Nov 13, 2007
Grant Date -
Apr 27, 2006
app pub date -
Oct 24, 2002
filing date -
Oct 25, 2001
priority date (Note) -
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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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