Trolley check-out monitoring system

Details Trolley check-out monitoring system Trolley check-out monitoring system

1980-11-14

1982-07-06

Waring, Alvin H.

Communications: electrical

Condition responsive indicating system

Specific condition

340 52D, 340556, 340673, G08B 1318

Patent

active

043385940

ABSTRACT:
A monitoring system for shopping trolleys of the kind used in self-service stores, including a basket for the goods and having at least one support surface below the basket and which is not normally visible to the check-out operator and provides a transmitter/receiver to detect an article on such a lower support surface and a further transmitter/receiver disposed at a lower level, to block operation of the transmitter/receiver in response to the legs of the customer, parts of the trolley running gear and the like and a device to provide a signal in response to operation of the transmitter/receiver.

REFERENCES:
patent: 3457423 (1969-07-01), Gravely
patent: 3725894 (1973-04-01), Geisler

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