G - Physics – 08 – B
Patent
G - Physics
08
B
340/124.4, 342/1
G08B 21/00 (2006.01) F16P 3/14 (2006.01)
Patent
CA 1158742
ABSTRACT OF THE DISCLOSURE A method and apparatus for detection of opaque members when within a detection space which includes the steps of sequentially effecting a radiant energy transmission across a detection space from a plurality of spaced apart sources and causing a detection observed signal when such transmission is not sufficiently detected at each of a plurality of correspondingly located and sequentially correspondingly selected locations. There are means provided to in addition detect if there is a stray source of radiant energy and there are means to interface this with power machinery, such as an industrial press or guillotine.
360381
Ambler Kenneth G.
Hirons & Rogers
Raeder Willy
LandOfFree
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