Pellet diameter measurement apparatus and method detecting non-o

Details Pellet diameter measurement apparatus and method detecting non-o Pellet diameter measurement apparatus and method detecting non-o

1990-06-18

1991-08-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356386, G01N 2186

Patent

active

050435884

ABSTRACT:
An pellet diameter inspection system has a laser scanning apparatus for measuring and detecting the outside diameter of the pellets and an apparatus for transferring pellets past the laser scanning apparatus. A stationary support track aligns and guides pellets in a row along a linear path past the laser scanning apparatus with the pellets being advances along the path by the transfer apparatus operating through forward and reverse strokes. The laser scanning apparatus includes a laser beam light source and receiver disposed on opposite sides of the linear path in a non-orthogonal orientation to the common axis of the aligned pellets and operable for respectively emitting and receiving a laser beam directed across the pellets along a directional path extending in a non-orthogonal orientation to common axis of the pellets which will eliminate detection of adjacent ends of the pellets in the row.

REFERENCES:
patent: 3609368 (1971-09-01), Knorr et al.
patent: 4349112 (1982-09-01), Wilks et al.
patent: 4448680 (1984-05-01), Wilks et al.
patent: 4749870 (1988-06-01), Schmaltuss et al.
patent: 4895449 (1990-01-01), Marshall
patent: 4991308 (1991-02-01), Donaldson

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