Shopping cart with lower tray signalling device

Details Shopping cart with lower tray signalling device Shopping cart with lower tray signalling device

1984-08-28

1988-02-16

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

186 62, G08B 1314

Patent

active

047258225

ABSTRACT:
A system for detecting the presence of a load on the lower tray of a shopping cart comprising a shopping cart with a lower tray movable between an upper and a lower position, a signal reflector connected to the lower tray and a detection device for detecting when the lower tray is in the lower position.

REFERENCES:
patent: 3457423 (1969-07-01), Gravely
patent: 3725894 (1973-04-01), Geisler
patent: 3909034 (1975-09-01), Trubiano
patent: 4327819 (1982-04-01), Coutta
patent: 4338594 (1982-07-01), Holm

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