Containers and closures

Details Containers and closures Containers and closures

1977-02-25

1978-03-21

Hall, George T.

Receptacles

Closures

Removable closure retained by ductile in situ deformation

B65D 4116

Patent

active

040798577

ABSTRACT:
A container and closure in which the closure has an inverted U-shaped rim and a cover portion lying within the rim and joined to the inner wall of the closure rim at a position downwards from the base of the `U`. The shape and size of the container rim is such that when the closure is assembled to it, the inner wall of the closure rim is resiliently flexed inwardly about its junction with the cover portion which is thereby resiliently flexed downwards. The inner wall thus is flexed and twisted to seal against the inner surface of the container rim and applies a positive pressure to assist in sealing. In preferred constructions, the inner wall has an extension below the cover portion. The extension flexes outwards during flexing of the cover portion so as to increase the seal.

REFERENCES:
patent: 3753511 (1973-08-01), Ruch
patent: 3811597 (1974-05-01), Frankenberg et al.

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