Pressurized container top

Details Pressurized container top Pressurized container top

1993-12-28

1996-01-09

Shoap, Allan N.

Receptacles

Closures

With condition responsive vent or valve

220267, 220281, 222206, 413 12, 413 67, B65D 1730, B65D 5122, B21D 5144

Patent

active

054821754

ABSTRACT:
A pressurized container end has a frangible member covering an opening in the end. The frangible member is cut away from the end by the action of increased pressure from within the container against the member. A protrusion in a portion of the end is depressed into the container for increasing pressure in the container. In an alternate form of the invention, the container itself is depressed inwardly for causing the increased pressure sufficient to cut the frangible member away from the end. Various opening geometries are each formed with a cutting edge.

REFERENCES:
patent: 1847108 (1932-03-01), Hirsch et al.
patent: 2147004 (1939-02-01), Wark et al.
patent: 4632298 (1986-12-01), Schellenberg
patent: 4938390 (1990-04-01), Markva

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