Jig for leak check

Details Jig for leak check Jig for leak check

1988-12-22

1990-03-06

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 492, G01M 304

Patent

active

049055011

ABSTRACT:
A jig for leak check capable of safely carrying out leak check of a hollow checked object using pressurized gas without damaging it irrespective of its wall thickness. The jig includes a jig body constituted by two joinable members so as to define an inner space therein. In the jig body is provided a closed chamber in which a checked object is hermetically received for leak check. The closed chamber may be formed by the inner space of the jib member itself. Alternatively, it may be formed by cooperation between a depression of a flexible and stretchable air bag arranged in the inner space of the jig body and a part of an inner surface of the jig body. The closed chamber is provided on at least a part of its surface with a leak lead-out element which may comprise a plurality of fine grooves formed in a mesh-like pattern on the surface of the closed chamber or a lining made of an air-permeable material and applied on the inner surface of the closed chamber.

REFERENCES:
patent: 3027753 (1962-04-01), Harder, Jr. et al.
patent: 3813923 (1974-06-01), Pendleton
patent: 4012945 (1977-03-01), Bergstrand
patent: 4055984 (1977-11-01), Marx
patent: 4584877 (1986-04-01), Brayman
patent: 4672366 (1987-06-01), Butts
patent: 4791805 (1988-12-01), Gates

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