Container closure for supplying air to or removing air from a co

Details Container closure for supplying air to or removing air from a co Container closure for supplying air to or removing air from a co

1984-08-10

1985-08-06

Hall, George T.

Receptacles

Closures

Superposed closures for common opening

220203, 220367, B65D 5122

Patent

active

045330620

ABSTRACT:
A container closure made from plastics, for supplying air to or removing air from a container, comprising a closure lower portion which can be connected to the container and has a diaphragm portion which comprises one piece with said lower portion, closes the pouring opening and can be torn out, and a cap which can be detachably connected to the closure lower portion characterized in that the diaphragm portion has a resilient diaphragm with an opening which in the normal position of the diaphragm portion is sealed in an air-tight manner by a projection of the container closure abutting with the opening, wherein the diaphragm of the diaphragm portion is prestressed against the projection of the container closure, and a hollow space of the cap adjoining the opening is in open connection with the atmosphere.

REFERENCES:
patent: 2907489 (1959-10-01), Taylor
patent: 3458080 (1969-07-01), Laurizio
patent: 4327842 (1982-05-01), Walter
patent: 4442949 (1984-04-01), Dwinell et al.

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