Self-venting end unit for pressure packaging

Details Self-venting end unit for pressure packaging Self-venting end unit for pressure packaging

1978-06-30

1980-07-01

Man-Fu Moy, Joseph

Receptacles

Closures

With condition responsive vent or valve

220231, 220359, 220367, 220DIG19, 215260, 215310, B60L 102

Patent

active

042102553

ABSTRACT:
An end unit intended for packaging products in an associated can or container wherein the product is of the type producing gases so as to normally increase the internal pressure within the can after the closing of the can. The end unit has a vent opening therethrough and is normally closed by a closure member which is held in contact with the container wall surrounding the vent opening by a strip of stretchable material having a memory. When pressure within the container exceeds a predetermined pressure, the closure will move out of the container sealing position under the restraint of the strip, and the container will be vented to the atmosphere.

REFERENCES:
patent: 2173571 (1939-09-01), Jesnig
patent: 2224296 (1940-12-01), Hoffman
patent: 2242966 (1941-05-01), Burkardt
patent: 2301212 (1942-11-01), Jones
patent: 2429984 (1947-11-01), Berglund
patent: 2933102 (1960-04-01), Hillman et al.
patent: 3369859 (1968-02-01), Cornelius
patent: 3621876 (1971-11-01), Campbell
patent: 3716180 (1973-02-01), Bemiss et al.

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