Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-05-08
1991-07-16
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25022726, 377 6, 377 53, G01V 904
Patent
active
050327151
ABSTRACT:
The invention relates to apparatus for accurately counting the number of containerized items by movement of a unitary emitting and sensor of a beam of light over rows and columns of the planar surface platform supporting the containerized items.
REFERENCES:
patent: 4151402 (1979-04-01), Fernandez et al.
patent: 4912317 (1990-03-01), Mohan et al.
patent: 4982412 (1991-01-01), Gross
Davenport T.
Laughlin Stanley Ira
Nelms David C.
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