G - Physics
06
M
354/21, 340/124.
G06M 9/00 (2006.01)
Patent
CA 1118102
PLATE COUNTER Abstract of the Disclosure A carriage having (1) an infrared energy ray emitter and detector and (2) an encoder is displaced over a side of stacked glass sheets to sense density of reflected energy rays as a function of carriage position on the stack. The sensed density of reflected infrared energy rays from the edges of the outermost sheets and the interface between adjacent sheets is less than the sensed density of the reflected rays from the sides of the sheets. The output signal of the encoder and of the detector is acted on to determine the number of sheets in the stack.
316338
Decker Forrest W.
Kenton Hobart E.
Gowling Lafleur Henderson Llp
Ppg Industries Inc.
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