System for detecting small openings in hollow bodies

Details System for detecting small openings in hollow bodies System for detecting small openings in hollow bodies

1977-08-03

1979-01-30

Knowles, Allen N.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

G01N 2132

Patent

active

RE0298913

ABSTRACT:
Light source and light sensor on opposite sides of wall of container detect pinhole or crack in container wall, with container rejection means operable by light sensor.

REFERENCES:
patent: 2318856 (1943-05-01), Hoffman
patent: 2332308 (1943-10-01), Dresser
patent: 2453720 (1948-11-01), Meister
patent: 2872039 (1959-02-01), Lynn et al.
patent: 3218463 (1965-11-01), Calhoun

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