WIPER MOTOR APPARATUS FOR VEHICLE
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United States of America Patent
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Issued Date -
Nov 24, 2016
app pub date -
Apr 1, 2016
filing date -
May 21, 2015
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A wiper motor apparatus for a vehicle includes a driving motor; a driving gear coupled to a driving shaft of the driving motor; a reduction gear engaged with the driving gear and having a rotation axis parallel with the driving shaft; and an output gear engaged with the reduction gear and having an output shaft parallel with the driving shaft. A magnet is disposed at a rotation center of the reduction gear. A sensor detects variations in a magnetic force of the magnet and outputs pulses according to the detected variations. The reduction gear rotates at a speed less than a speed at which the driving gear rotates. The output gear rotates at a speed less than the speed at which the reduction gear rotates.
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