Motor and control for windshield wiper system
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United States of America Patent
Stats
-
Oct 6, 1998
Grant Date -
N/A
app pub date -
May 25, 1995
filing date -
May 25, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention concerns an improved system for windshield wipers in vehicles. An induction motor is used, in which speed is accurately controlled by controlling frequency of power supplied to the motor. The induction motor may be of the consequent-pole type, which ordinarily does not produce sufficient torque. Addition of (a) auxiliary tooth slotting and (b) skew has raised the torque produced to acceptable levels. The invention includes a control system, which senses excess load on the motor, which occurs as the windshield dries, and reduces motor speed, subject to a minimum, in response.
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Family
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Cited Art Landscape
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