Measuring and testing – With fluid pressure – Leakage
Patent
1987-03-12
1988-07-12
Levy, Stewart J.
Measuring and testing
With fluid pressure
Leakage
73 454, G01M 332
Patent
active
047561840
ABSTRACT:
Disclosed are apparatus and methods for testing for leaks in bottles or containers having at least one flexible portion. The apparatus includes one or more test chambers including a means for applying a direct compressive force to the flexible container portion and also a means for measuring the reaction force exerted by the internal pressure in the container to the applied force after at least two predetermined time intervals following application of the direct force while the force is maintained, and means for generating signals indicative of the reactive forces. In its method aspect, the invention provides methods whereby the reaction force is compared with established reference values obtained by applying the same direct force to an identical container having known leak characteristics and establishing by such comparison if the leak rate for the tested container conforms to the established reference values.
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Cooley Timothy R.
Reishus Terry G.
Viland Michael G.
General Mills Inc.
Levy Stewart J.
O'Toole John A.
Roskos Joseph W.
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