Leak-proof closures

Details Leak-proof closures Leak-proof closures

1986-05-12

1987-12-22

Pollard, Steven M.

Receptacles

Outlet or junction box type

Sectional receptacle

229 7S, A47G 2118

Patent

active

047141735

ABSTRACT:
A cover for openings in containers such as plastic or paper cups used, primarily, in fast food restaurants. The cover may include at least one one-way valve mechanism or be made of a porous material that allows air through but not liquids. An orifice with a tubular extension attached thereto provides a suitable engagement with a straw that is used to withdraw the liquid contained on the cup. Anchorage members are provided on the upper surface of the cover so that the straw may be bent when not in use.

REFERENCES:
patent: 2948453 (1960-08-01), Drown
patent: 3200980 (1965-08-01), Jamell
patent: 3335897 (1967-08-01), Castro
patent: 4247016 (1981-01-01), Shaw
patent: 4494668 (1985-01-01), Lottick
patent: 4607755 (1986-08-01), Andreozzi

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