Disposable cup lid having a tear-resistant straw slot

Details Disposable cup lid having a tear-resistant straw slot Disposable cup lid having a tear-resistant straw slot

1991-11-04

1992-09-15

Marcus, Stephen

Receptacles

Container attachment or adjunct

Drinking device

220229, 220266, 215 1A, 215229, B65D 5100

Patent

active

051470659

ABSTRACT:
A disposable cup lid has intersecting straw insertion slits and rip-stop end cuts located transversely to and spaced from the ends of the straw insertion slits. In a preferred embodiment, the rip-stop end cuts are stamped lines of weakness or perforations, located perpendicularly to, and between about 1/32 and 1/16 inch beyond, the ends of the straw insertion slits. In another preferred embodiment, the end cuts are portions of the arc of a circle with a diameter slightly larger than the length of the straw insertion slits. The rip-stop end cuts, together with the straw insertion slits, define frangible reinforcing webs connecting wedge-shaped lid portions defined by the straw insertion slits. The webs strengthen the cup during shipment, during mounting on the cup, and during transportation of the filled cup prior to insertion of the straw. The webs are broken by insertion of the straw, resulting in a structure that effectively prevents the force of straw insertion from tearing the top surface of the lid.

REFERENCES:
patent: 3822030 (1974-07-01), Tanzer
patent: 4074827 (1978-02-01), Labe, III
patent: 4106660 (1978-08-01), Boyle
patent: 4245752 (1981-01-01), Prueher
patent: 4350260 (1982-09-01), Prueher
patent: 4438865 (1984-03-01), Scattaregia
patent: 4441623 (1984-04-01), Antoniak
patent: 4502608 (1985-03-01), Mills
patent: 4811860 (1989-03-01), Sorenson et al.
patent: 4901881 (1990-02-01), McElroy
patent: 4948009 (1990-08-01), Sawatani
patent: 4999230 (1991-03-01), Pipkins
patent: 5025947 (1991-06-01), Leone

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