Object detection system for a shopping cart

Details Object detection system for a shopping cart Object detection system for a shopping cart

1980-08-01

1982-05-04

Skaggs, H. Grant

Merchandising

Customer service

Store service

340568, G08B 1300

Patent

active

043278191

ABSTRACT:
A shopping cart wherein the positioning of an article on a lower tray is signalled to a checkout attendant. A tray is pivotally supported at one end and spring biased in an upper position at an opposite end. A reflector is positioned on the tray such that it is moved to a lower position when an object is placed on the tray. A beam of light is directed across the path of a cart as it approaches a checkout position. This beam is at an elevation to strike the reflector when the tray is deflected downward by the weight of an object. A light sensor is positoned to detect light reflected by the reflector and to initiate a signal to a checkout attendant, alerting the attendant to the fact that there is an object on the tray.

REFERENCES:
patent: 3051936 (1962-08-01), Finger et al.
patent: 3263774 (1966-08-01), Reese
patent: 3457423 (1969-07-01), Gtarkly
patent: 3725894 (1973-04-01), Geisler

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