Process for detecting resident air in a liquid charged receptacl

Details Process for detecting resident air in a liquid charged receptacl Process for detecting resident air in a liquid charged receptacl

1984-06-15

1986-10-07

McGraw, Vincent P.

Optics: measuring and testing

By inspection with agitation or rotation

Of container contents

250223B, 356240, 356244, G01N 2190

Patent

active

046156224

ABSTRACT:
A perspective receptacle charged with liquid and having its mouth portion sealed with an opaque seal member is rotated as-erected at a high speed. Due to this high speed rotation, the air resident in the vicinity of the mouth portion of the receptacle forms an air cavity and descends below the seal member. This descending air cavity is detected from the outside of the receptacle by means of an optical detecting member.

REFERENCES:
patent: 3811567 (1974-05-01), Tomita et al.
patent: 3900266 (1975-08-01), Takahashi et al.
patent: 4241256 (1980-12-01), Tagaya et al.

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