Container seal testing and pressurization

Details Container seal testing and pressurization Container seal testing and pressurization

1988-12-21

1994-02-15

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 52, G01M 302

Patent

active

052856780

ABSTRACT:
A method and apparatus for nondestructively testing sealed containers to proof test for seal leaks present in one or more container seals formed between mating parts of a container. The apparatus preferably includes a container rest or support assembly which holds a container being tested. The container support can advantageously include two corresponding testing head members which are movably mounted on a frame to clamp peripheral portions of the container to form a secondary seal outward of the primary seal which is being tested for leakage. The secondary seal creates a test chamber defined within marginal edge portions of the container which is adjacent the primary seal for applying a testing pressure thereto. Some of the preferred embodiments include a passage forming device for forming a testing fluid supply passage into the test chamber. The passage forming device can be an injection probe which forms an opening and injects a pressurized testing fluid into the test chamber. Also shown is a testing device adapted for supplying a test pressure to preformed testing fluid supply openings located along the marginal portions of the sealed containers to communicate the desired testing pressure to the enclosed test chamber. The invention further includes a container adapted for use in the novel apparatus and using the novel method for nondestructive testing and pressurization. Preferred embodiments of the container include a preformed recess or channel provided outward of the primary seal to at least partially form the testing chamber. Preformed openings and preformed secondary seals are also included in some preferred forms of the inventive container.

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