Process and apparatus for testing a multi-trip bottle for contam

Details Process and apparatus for testing a multi-trip bottle for contam Process and apparatus for testing a multi-trip bottle for contam

1995-11-07

1997-12-16

Font, Frank G.

Optics: measuring and testing

By inspection with agitation or rotation

Of container contents

356240, 356409, 250223B, 209587, 209588, 209577, 209583, 235383, G01N 2100, G01N 904, G01N 2125, B07C 500

Patent

active

056991622

ABSTRACT:
To test a bottle for contamination, the bottom of the bottle is laterally illuminated with a measuring light beam from a source. This measuring light beam is deflected, as if in a waveguide, in the ring of residual liquids at the bottom of the bottle. Light reemerging from the residual liquid is imaged on a detector by an imaging lens. The detector measures the spectral composition of the deflected light and compares this with theoretical values which should be yielded by the liquid with which the bottle was last filled. If deviations from the theoretical values are excessive, the bottle is rejected. The process described provides a simple way of determining whether a multi-trip bottle has contained an extraneous liquid.

REFERENCES:
patent: 4830192 (1989-05-01), Plester et al.
patent: 4858768 (1989-08-01), Plester
patent: 4998824 (1991-03-01), Littlejohn et al.
patent: 5002397 (1991-03-01), Ingrum et al.
patent: 5067616 (1991-11-01), Pleester et al.
patent: 5216239 (1993-06-01), Yoshida
patent: 5361912 (1994-11-01), Krieg et al.
patent: 5405014 (1995-04-01), Krieg et al.
patent: 5443164 (1995-08-01), Walsh et al.
patent: 5612525 (1997-03-01), Apler et al.

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