Plastic container closure

Details Plastic container closure Plastic container closure

1975-06-19

1977-05-31

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

220306, B65D 4310, B65D 5116

Patent

active

040264599

ABSTRACT:
A plastic closure adapted for frictional mounting upon the rim of a cup or the like has an upstanding brim extending about a central panel, which brim has a downwardly opening channel therein for seating the cup rim. A series of discrete compound protuberances project into the channel from the outside wall of the brim, and provide a discontinuous bead which engages the rim of the cup. The protuberances are configured to afford facile mounting on the cup and secure retention thereon while, at the same time, ensuring ready stripping from the male forming member on which the closure is molded. The inside wall of the closure is configured to ensure close fitting sealing engagement with the inner surface of the cup, and is dimensioned to do so without causing buckling, such as would, in turn, tend to produce leakage from the closed container. In general, the configuration of the closure adapts it for use with containers having a variety of rim configurations and a range of dimensions.

REFERENCES:
patent: 2864546 (1958-12-01), Aldington
patent: 2922563 (1960-01-01), Aldington
patent: 2956721 (1960-10-01), Bennett
patent: 3065875 (1962-11-01), Negodo
patent: 3805991 (1974-04-01), Cheladze
patent: 3883036 (1975-05-01), Mahaffy

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