Method and apparatus for detecting leaks in a sealed container

Details Method and apparatus for detecting leaks in a sealed container Method and apparatus for detecting leaks in a sealed container

1989-02-01

1990-02-13

Tokar, Michael J.

Measuring and testing

Testing sealed receptacle

73 493, G01M 336

Patent

active

048995746

ABSTRACT:
A method is disclosed for testing the integrity of a container of the type which includes a thin walled cup and a flexible lid sealed to the rim of the cup. In accordance with the method a force is applied to an elongated portion of the lid which circumscribes an area which is coaxial with the center of the cup. Since the cup is sealed this application of force causes the circumscribed area to bow outwardly from the cup. The displacement of the bowed portion is then compared to the previously measured displacement for containers known to be of acceptable quality. An apparatus for performing the test has an upper test assembly with a rim which is adapted to be urged against the elongated portion of the lid. A displacement sensor is mounted within the upper test assembly.

REFERENCES:
patent: 2383936 (1945-09-01), Hohl
patent: 2648977 (1953-08-01), Mills
patent: 2695515 (1954-11-01), Ward et al.
patent: 4306448 (1981-12-01), Rohde
patent: 4315427 (1982-02-01), Leiter et al.
patent: 4706494 (1987-11-01), Creed et al.
patent: 4747299 (1988-05-01), Fox et al.
patent: 4771630 (1988-09-01), Croce et al.

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