Closure assembly for vacuum sealed containers

Details Closure assembly for vacuum sealed containers Closure assembly for vacuum sealed containers

1994-12-20

1996-03-19

Shoap, Allan N.

Receptacles

Closures

With vacuum breaker or manually operable vent

215312, 220212, 220227, 251339, 251342, 251900, B65D 5116

Patent

active

054997356

ABSTRACT:
An air valve apparatus for vacuum sealed containers comprises a cover having a groove at center portion and an aperture at center portion concentrically with respect to the groove. The aperture has projecting a pair of circular walls both from the upper side to receive an air releasing device and from the lower side to receive an anti-dust cover thereon, respectively. The air releasing device has a hollow body and includes a pressing knob at top portion, an integral pin extending downwardly in a distance near a ball which is seating on top of an O-ring which is fitted on top of the aperture to form a hermits seal between the vacuum sealed container and the outside. By pressing the knob downward, the pin will urge the ball to one side that allows air to flow into the container and releases the vacuum status.

REFERENCES:
patent: 1606519 (1926-11-01), Exten
patent: 4016999 (1977-04-01), Denzer
patent: 4142645 (1979-06-01), Walton
patent: 4428478 (1984-01-01), Hoffman
patent: 5288053 (1994-02-01), Young
patent: 5347918 (1994-09-01), Chen
patent: 5405038 (1995-04-01), Chuang

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