Method for reducing test cycle time and for improving measuring

Details Method for reducing test cycle time and for improving measuring Method for reducing test cycle time and for improving measuring

1993-02-10

1994-08-02

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 52, G01M 332

Patent

active

053334914

ABSTRACT:
A method and test chamber for leak testing a container with a substantially flexible wall portion wherein the container is introduced into a test cavity so that the wall portion of the container is spaced from an inner adjacent wall portion of the test cavity with a gap being defined between the wall portion of the cavity and the flexible wall portion of the container. A pressure difference is installed as an initial value between the interior of the container and at least the gap by applying a pressure at least to the gap which is smaller than a pressure inside the container. The flexible wall portion is supported form its exterior side within the test cavity so as to prevent the flexible wall portion from bending outwardly into contact with the wall portion of the test cavity as a result of the pressure difference. The time course of a pressure prevailing within the gap is measured as a leak indicative signal.

REFERENCES:
patent: 5042291 (1991-08-01), Lehmann

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