Method and a device for assortment of a product flow

Details Method and a device for assortment of a product flow Method and a device for assortment of a product flow

1987-05-20

1989-03-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250226, G01N 904, G01J 350

Patent

active

048126446

ABSTRACT:
In a method and a device for assortment of objects a broadbanded light is emitted from a light source, which light is reflected via a rotary mirror against the objects falling freely immediately after they have left a conveyor belt. The reflected light is led via the other part of the same surface of the rotary mirror to an optical unit and is reflected against a double detector dividing the light flow into two wide ranges about 1 .mu.m. The detector signals are compared to one another and after processing the resulting signal is caused to actuate means separating the objects mechanically.

REFERENCES:
patent: 3097744 (1963-07-01), Hutter et al.
patent: 3283896 (1966-11-01), Jirik et al.
patent: 4236640 (1980-12-01), Knight
patent: 4351437 (1982-09-01), Long
patent: 4513868 (1985-04-01), Culling et al.

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