Container inspection apparatus

Details Container inspection apparatus Container inspection apparatus

1988-11-08

1989-06-06

Lall, Parshotam S.

Boots, shoes, and leggings

364558, 73 492, G01M 326

Patent

active

048377074

ABSTRACT:
A sealing surface finish leak detector comprises a test fitting, a source of pressure regulated gas, means for coupling the source of gas to an aperture in the test fitting to deliver the gas to the container at an inspection site, and means for limiting the rate of flow of the gas from the source into the container. The pressure in the container is sampled a predetermined time after the gas begins to flow into the container. The predetermined time is short enough and the rate of flow of the gas into the container low enough so that the pressure in the container at the predetermined time is well below the source pressure even if the container is properly sealed. An average size leak between the sealing surface and the test fitting results in a significantly reduced pressure or rate of pressure rise in the container at the predetermined time.

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