Cannula pierceable self-sealing closure

Details Cannula pierceable self-sealing closure Cannula pierceable self-sealing closure

1980-05-08

1981-09-22

Norton, Donald F.

Bottles and jars

Closures

Self-sealing, piercable-type closure

B65D 4736

Patent

active

042905346

ABSTRACT:
The disclosure is of a novel closure for air evacuated tubular containers and comprises a tubular body having flexible, elastic sidewalls, an open end, a closed end formed by a cannula-pierceable, flexible, elastic end wall having a concavo-convex configuration in cross-section and a flange disposed radially about the periphery of the open end. The novel closure structure takes advantage of the vacuum force in the container to maintain a gas-proof, hermetic seal, reduces the thickness required of the closure to maintain the hermetic seal and is easier to assemble in an air evacuated container. The disclosure is also of a novel method of assembling the closure of the invention in an air evacuated tubular container.

REFERENCES:
patent: 2186888 (1940-01-01), Tullar
patent: 2746632 (1956-05-01), Bramming 215
patent: 3109549 (1963-11-01), Conklin
patent: 3136440 (1964-06-01), Krug
patent: 3189210 (1965-06-01), Heisler
patent: 3760969 (1973-09-01), Shimamoto

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