Contractable closure member

Details Contractable closure member Contractable closure member

1981-08-17

1983-06-14

Hall, George T.

Receptacles

Closures

Externally adjustable plug or gasket

220238, B65D 5300

Patent

active

043878253

ABSTRACT:
The invention relates to a contractable closure member for sealing an open-ended container. The closure member comprises a top wall formed of a rigid material and an elastic bottom wall formed of a flexible material and having an upwardly extending continuous side wall. The side wall has a seal formed integral therewith, and this wall is securable to the top wall whereby the bottom wall is held in spaced relationship with the top wall. A retracting lever is pivotally secured in the top wall and has an engagement end and a pusher end. The pusher end is arcuately displaceable against a central portion of the bottom wall to distend the bottom wall whereby at least a portion of the side wall will be drawn inwardly to remove sealing pressure when positioned for sealing engagement in an open-ended container.

REFERENCES:
patent: 3756480 (1973-09-01), Swett et al.
patent: 4083468 (1978-04-01), Batchelor
patent: 4295578 (1981-10-01), Parent

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