Bottles and jars – Closures – Cap type
Patent
1983-11-02
1985-09-03
Norton, Donald F.
Bottles and jars
Closures
Cap type
220306, B65D 4118
Patent
active
045387419
ABSTRACT:
A one-piece tightly fitting, molded plastic lid intended to be used in association with a container having a laterally-protruding lip extending about the perimeter of its mouth. In each embodiment of the invention the plastic lid is provided with a surrounding depending sidewall having a relatively thin upper web segment which is adapted to deform heightwise to conform to the shape of the protruding container lip as the lid is fitted onto the container. The lower region of the lid sidewall has a resilient skirt which is thicker than the web segment and thus has a greater elastic memory. The sidewall skirt stretches when forced over the protruding lip and then the skirt retracts radially inwardly closely adjacent to the outside wall of the container immediately below the lip to stretch the deformable web segment tightly over the lip to seal the mouth of the container.
REFERENCES:
patent: 2814404 (1957-11-01), Towns
patent: 3325044 (1967-06-01), McCutcheon
patent: 4279358 (1981-07-01), Jacobs
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