Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1991-11-14
1993-02-09
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15319, 34243C, F26B 1900, B60S 306
Patent
active
051843692
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 control circuitry includes and oscillator, counter circuit and integrator for producing a distance ramp, and an echo detector for receiving the reflected signal for comparison to the distance ramp to determine the distance of the sensor (66) from the object.
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
Faytlin Alexander B.
McElroy Lucian G.
Raby Alvin S.
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