CARBON BRUSH
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United States of America Patent
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Issued Date -
Dec 27, 2012
app pub date -
Mar 25, 2011
filing date -
Mar 26, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A carbon brush is provided that improves motor efficiency and achieves a longer service life. A carbon brush (1) to be pressed against an electrically-conductive rotor (2) is characterized by containing mesocarbon powder and an aggregate material containing carbon as at least one component thereof. It is preferable that the mesocarbon powder have a substantially spherical shape, and it is also preferable that the mesocarbon powder has been subjected to a preheating treatment. In addition, it is preferable that the temperature of the preheating treatment be from 500° C. to 700° C.
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