Apparatus for detecting pinholes in cans

Details Apparatus for detecting pinholes in cans Apparatus for detecting pinholes in cans

1981-03-10

1984-04-10

McGraw, Vincent P.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

250223B, G01N 2190

Patent

active

044418132

ABSTRACT:
An apparatus for detecting pinholes in cans comprising a dark box consisting of a light seal plate and a window, a photodetector detecting electrically the outer penetration of light, and light sources disposed around the can. The light seal plate has a groove for receiving an open end of a can therein and is of a hardness greater than that of the can. The groove of the light seal plate communicates with a trap. The surface of the groove is black non-luster.

REFERENCES:
patent: 3395285 (1968-07-01), Scanlon et al.
patent: 3416659 (1968-12-01), Linderman et al.

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