Container closure

Details Container closure Container closure

1989-04-11

1990-09-25

Marcus, Stephen

Receptacles

Closures

Warped cover flexed into operative position

220307, 215320, 215354, B65D 5112

Patent

active

049587447

ABSTRACT:
A closure for the open mouth of a container includes a main body and sealing means which extends around the periphery of the main body. The sealing means has a sealing edge which is adapted to engage a sealing surface formed on the container, and a resiliently flexible web which connects the sealing edge to the main body. The web is movable between a relaxed condition, in which the diameter of the sealing edge is at a maximum, and a sealing condition, in which the diameter of the sealing edge is less than maximum. When the closure operatively closes the opening in the container the web is moved to the sealing condition, and the resilience of the web material serves to press the sealing edge against the sealing surface. Preferably the web in its relaxed condition has a frusto-conical form which diverges upwardly and the sealing edge is formed on the upper and outer edge of the web.

REFERENCES:
patent: 1304002 (1919-05-01), Watkins
patent: 3073473 (1963-01-01), Davidson
patent: 3297184 (1967-01-01), Andelin
patent: 3298415 (1967-01-01), Klygis
patent: 3380610 (1968-04-01), Krieps
patent: 3415405 (1968-12-01), Rausing et al.
patent: 3756480 (1973-09-01), Swett et al.
patent: 4426014 (1984-01-01), Coltman, Jr.
patent: 4537325 (1985-08-01), Zieff
patent: 4606474 (1986-08-01), Dudzik

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