Programmable brush for DC motors
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United States of America Patent
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May 6, 2003
Issued Date -
N/A
app pub date -
Nov 5, 1997
filing date -
Feb 8, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention concerns a brush system for a commutated DC motor. As the brush wears, different cross-sectional shapes, at different positions, come into contact with the commutator. The center of contact for each cross-sectional shape can be different, thereby changing brush angle as wear occurs. The change in brush angle can be desirable, in order to offset other effects which occur as a result of wear. For example, motor speed can change as a result of brush wear. Changing brush angle can offset the change in speed.
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