Container seal prover

Details Container seal prover Container seal prover

1975-08-28

1976-10-12

Myracle, Jerry W.

Measuring and testing

Testing sealed receptacle

33169B, G01M 336

Patent

active

039850188

ABSTRACT:
Apparatus is disclosed for testing the seal of a container, especially a container used for the storage of foods. Metal cans that contain preserved foods are sealed by lids that are pulled inward toward the can after the canning process is completed properly and the can is sealed. When the can is unsealed, such as for example, by a can opening apparatus the can lid bulges outward. Absent this outward movement, the contents of the can would not be considered fit for consumption. The apparatus comprises a base that is positioned next to a container and has associated therewith a member extendable to a wall of a sealed container that is responsive to the bulging and contracting of the wall when the container is unsealed. An indicator member is operably engaged by the member extendable to the wall of the container to indicate whether the container wall has contracted or bulged upon unsealing the container.

REFERENCES:
patent: 1340473 (1920-05-01), Birkenbeuel
patent: 2355051 (1944-08-01), Braucher
patent: 2445176 (1948-07-01), Hoffman
patent: 3736899 (1973-06-01), Manske
patent: 3880749 (1975-04-01), Ramsay

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