Reduced speed growth in windshield wiper motor
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United States of America Patent
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-
Dec 22, 1998
Issued Date -
N/A
app pub date -
Apr 11, 1997
filing date -
Jun 7, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an ordinary DC motor in a windshield wiper, operating speed tends to increase as the motor brushes become seated. The invention counteracts this tendency by providing a brush geometry which causes the effective angular position of a brush to change during seating. The change is in a direction which tends to reduce speed.
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