Infrared detector for ensuring correct weighing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 22, 1991
Grant Date -
N/A
app pub date -
Apr 2, 1990
filing date -
Apr 2, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Parallel infrared beams are directed along opposite edges of an electronic scale which has its weighing platform mounted flush with a supermarket check-out counter. In the event that an object being weighed overhangs the scale and contacts the counter, it will break one or more beams. Means are provided for detecting the interruption of a beam and a disable control signal is generated. Normally, an electronic cash register is connected to an output of the scale for computing the price of a weighed object. However, when the disable signal is generated, communication between the scale and the electronic cash register is disabled, thereby preventing computation of an incorrectly weighed object.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully