System for encouraging the return of vehicles such as trolleys

Details System for encouraging the return of vehicles such as trolleys System for encouraging the return of vehicles such as trolleys

1982-09-27

1985-10-22

Caldwell, Sr., John W.

Communications: electrical

Vehicle detectors

Photoelectric

194 4C, 340933, G08G 100

Patent

active

045491828

ABSTRACT:
Users need to be encouraged to return vehicles such as airport baggage trolleys or supermarket trolleys to a vehicle storage area. The area is equipped with an entrance fitted with a system for dispensing a reward for each vehicle returned to the area. The system comprises detector means (16, 17) for detecting the presence of a vehicle at the entrance to the storage area, control means for determining whether a vehicle has been effectively returned (and not just passed back-and-forth past the detector means), and means (23) for dispensing a reward such as a ticket exchangeable for a benefit of some kind for each returned vehicle. Said detector means comprise two detectors which are disposed in line along a vehicle return path at said entrance and which are so spaced relative to each other as to be capable of being triggered simultaneously by a single member of a vehicle as said vehicle is moved along said path past said detector means, whereby the direction of vehicle movement past the detector means can be determined by the control means.

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