Container and leak-testing system therefor

Details Container and leak-testing system therefor Container and leak-testing system therefor

1973-04-30

1976-01-06

Queisser, Richard C.

Measuring and testing

With fluid pressure

Leakage

73 453, 73 498, G01M 302

Patent

active

039304019

ABSTRACT:
A system for testing opening-equipped containers for leakage during the entire period, which is usually relatively long, between the time that such containers are fabricated by the manufacturer thereof and the time that they are filled by the user with the product intended therefor. The system includes a testing method, a particular test closure or cap and structural relationship thereof with a container opening, and apparatus for establishing a pressure differential between the interior and exterior of any container under test. In the practice of such system, a pressure differential is established between the interior and exterior of the container, such as by vacuumizing the container interior; seating a closure cap of particular character against surfaces of the container in covering relation with the opening thereof, and sealingly relating the closure cap to the container and thereafter maintaining the sealing relationship therebetween using, in each instance, only the pressure differential as the seating and sealing force; transporting the sealed container from its place of fabrication to the place of use, either directly or with intermediate storage periods; and before the container is to be filled with a product, testing the tightness of the closure cap against the container as an index of the presence or loss of the pressure differential.

REFERENCES:
patent: 2020535 (1935-11-01), Cameron
patent: 2130637 (1938-09-01), Darling
patent: 2177019 (1939-10-01), Egenolf
patent: 3595065 (1971-07-01), Scribner
patent: 3762213 (1973-10-01), Nowicki

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