Leakproof vented beverage lid

Details Leakproof vented beverage lid Leakproof vented beverage lid

1998-03-20

1999-11-23

Cronin, Stephen K.

Receptacles

Closures

Vent in closure

220780, 220792, 220796, 215261, B65D 5116

Patent

active

059884266

ABSTRACT:
A disposable plastic lid is formed with a vent hole. A filter formed of a hydrophobic material such as polytetrafluoraethylene is mounted over the vent hole. The pore size of the filter material is selected to allow for the free passage of air and to inhibit or block the passage of liquids such as water.

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patent: 4935371 (1990-06-01), Rickloff
patent: 4953743 (1990-09-01), Dart et al.
patent: 5391496 (1995-02-01), Kayal et al.
patent: 5407087 (1995-04-01), Giblin et al.
patent: 5523236 (1996-06-01), Nuzzo

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