Brush wear indicator
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United States of America Patent
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-
Apr 17, 1990
Grant Date -
N/A
app pub date -
Dec 14, 1988
filing date -
Dec 14, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for detecting the wear of a motor brush includes a spring that biases the brush towards an extended position. A portion of the spring moves along a path towards the extended position as the brush wears, wherein the spring portion makes mechanical contact with a portion of an electrical signal generating device that is disposed in the path to indicate a given amount of brush wear has occurred.
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