Non-contacting automotive dryer sensor
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United States of America Patent
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Mar 23, 1993
Grant Date -
N/A
app pub date -
Nov 14, 1991
filing date -
Nov 14, 1991
priority date (Note) -
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Abstract
A drying apparatus (10) for a vehicle washing system maintains blower air bags (18) a predetermined distance from the vehicle without contacting same providing forced air against the vehicle. Ultrasonic sensor (66) are provided on front and back sides of the nozzle (26) for sensing objects within a predetermined distance in combination with control circuitry. The control circuitry controls a motor (42) to retract a cord (36) to in turn raise or move out of the path of the vehicle, the air bag (18) maintaining the predetermined distance from the vehicle. The signals from each of the sensors (66) are each combined to control the motor. The sensors (66) include a housing for supporting same with apertures therethrough for transmissions and reception of ultrasonic signals. The housing includes sawtooth projections extending between the apertures to block transmissions from direct reception by the receiver.
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