Measuring and testing – With fluid pressure – Leakage
Patent
1998-05-08
2000-01-18
Brock, Michael
Measuring and testing
With fluid pressure
Leakage
73 451, G01N 326
Patent
active
060148918
ABSTRACT:
A container end leak testing device used for testing a container end. The container end having a score line defining an opening in the container end and a pull tab. The pull tab used for creating the opening therein. The leak testing device includes a pressure transducer disposed directly above a top of the container end to be tested. The pressure transducer, under computer control, is able to test for small volumes of air pressure leaks, ie. 0.1 cubic centimeters and less. The leak testing device also includes a tester housing, an upper housing member, a lower housing member and a container end test pocket disposed between the two housing members. The upper housing member includes the pressure transducer mounted thereon and having an air passage communicating with the test pocket. Also, the upper housing member includes two downwardly extending guide pins and an air actuated stop pin for centering the container end inside the test pocket. The lower housing member moves up and down in the lower portion of the tester housing. The lower housing member includes a spring biased base plunger for engaging the bottom of the container end and compressing the top of the container end against a flat annular ring disposed in the bottom of the upper housing member. The lower housing member and base plunger include an air passage therein for introducing test air pressure in and around the bottom and sides of the container end to determine if any air passes through any leaks in the container end and is sensed by the pressure transducer.
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Brock Michael
Conal Engineering Inc.
Crabtree Edwin H.
Margolis Donald W.
Pizarro Ramon L.
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