Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-05-02
1997-03-11
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340556, 340674, 2502221, G08B 1314
Patent
active
056105843
ABSTRACT:
A device is provided at a check stand for detecting the presence of goods on a shopping cart of the type including two bottom rails, a plurality of wheels beneath the bottom rails and a rack mounted on the bottom rails for supporting goods thereon. The device comprises an alarm for indicating to a person at the check stand, optical transmitters for transmitting a plurality of beams of light across an alleyway to optical receivers, the transmitters and receivers being positioned in a pattern to be responsive to the shape of the cart having goods on the rack while being not responsive to the shape of a cart having an empty rack and being not responsive to persons. The pattern defines a first row of three optical transmitter elements which are horizontally spaced longitudinally of the alleyway and a second row of two optical transmitter elements arranged at a height relative to the floor below the rail. The transmitters of the first row and the receivers of the second row are mounted on a first detection member mounted on one side of the alley and the receivers of the first row and the transmitters of the second row are mounted on a second detection member mounted on the other side of the alley. The second row of transmitters are arranged to transmit only in response to detection by the first row of a condition in which no beams are detected. A control circuit is responsive to a condition in which the optical receivers of the second row receive the beam from the respective optical transmitter element of the second row for actuating the alarm means.
REFERENCES:
patent: 3725894 (1973-04-01), Geisler
patent: 3746863 (1973-07-01), Pronovost
patent: 4327819 (1982-05-01), Coutta
patent: 4338594 (1982-07-01), Holm
patent: 4650990 (1987-03-01), Jonsson
patent: 4725822 (1988-02-01), Hooley
patent: 4736098 (1988-04-01), Rehrig
patent: 4843461 (1989-06-01), Tatsumi et al.
patent: 5337040 (1994-08-01), Kind
patent: 5485006 (1996-01-01), Allen et al.
patent: 5500526 (1996-03-01), Shalui et al.
Battison Adrian D.
Hofsass Jeffery
Lee Benjamin C.
Thrift Murray E.
LandOfFree
Detection of goods on the bottom rack of a cart does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detection of goods on the bottom rack of a cart, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of goods on the bottom rack of a cart will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-446574