Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1991-11-14
1993-03-23
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
153121, 153122, 15319, B60S 306, F26B 1900
Patent
active
051952076
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.
REFERENCES:
patent: 4446592 (1984-05-01), McElroy
patent: 4587688 (1986-05-01), Gougoulas
patent: 4809392 (1989-03-01), Larson et al.
patent: 4817301 (1989-04-01), Belanger et al.
patent: 4934018 (1990-06-01), Fortier et al.
patent: 4949423 (1990-08-01), Larson et al.
patent: 4995136 (1991-02-01), Smith
McElroy Lucian G.
Raby Alvin S.
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