Tamper-evident closure with pull-tab

Details Tamper-evident closure with pull-tab Tamper-evident closure with pull-tab

1997-02-05

1999-08-03

Castellano, Stephen

Receptacles

Closures

With closure opening arrangements for means

220783, 220793, B65D 1734, B65D 4146

Patent

active

059313323

ABSTRACT:
A tamper-evident container system having a lid fitting over a container and a pull-tab attached to the lid along frangible lines. The pull-tab angles inwardly and upwardly from a peripheral rim of the lid and terminates below the topmost portion of the lid. The pull-tab joins to the adjacent walls of the lid rim along thin integrally formed webs which are easily severed upon displacement of the pull-tab to provide highly visible evidence of tampering. The webs extend from an inner section of the rim and across at least a portion of an upper bridge formed on the rim, further enhancing the visibility of any tampering. The pull-tab forms a small angle with a vertical inner wall of a recess of the lid and extends circumferentially around the inner wall without extending above the rim. A sealing ring formed on the lid below the pull-tab enables the container system to be resealed by the consumer after opening. A poppet-style injection molding assembly is used to form the lid which creates a space between the mold parts forming the angled pull-tab prior to release of the lid from an undercutting mold structure.

REFERENCES:
patent: 3422984 (1969-01-01), Foster
patent: 4171062 (1979-10-01), Allen et al.
patent: 4344545 (1982-08-01), Aschberger et al.
patent: 4488658 (1984-12-01), Smith et al.
patent: 4627550 (1986-12-01), Dines
patent: 4643329 (1987-02-01), Mobberley et al.
patent: 4721210 (1988-01-01), Lawrence et al.
patent: 4819819 (1989-04-01), Robertson, Jr.
patent: 4821913 (1989-04-01), Hidding
patent: 4878595 (1989-11-01), Uhlig
patent: 4881656 (1989-11-01), Chumley et al.
patent: 4883193 (1989-11-01), Christensson
patent: 4890758 (1990-01-01), Gailus
patent: 4966294 (1990-10-01), Mack et al.
patent: 4986430 (1991-01-01), Dutt
patent: 5020686 (1991-06-01), Dutt
patent: 5085333 (1992-02-01), Dutt et al.
patent: 5085339 (1992-02-01), Roth et al.
patent: 5094357 (1992-03-01), McKinney
patent: 5111954 (1992-05-01), Gaudreault
patent: 5123561 (1992-06-01), Gross
patent: 5170905 (1992-12-01), Luch
patent: 5219087 (1993-06-01), Christensson
patent: 5224617 (1993-07-01), Gaudreault
patent: 5307948 (1994-05-01), Blackburn et al.
patent: 5348184 (1994-09-01), Adams et al.
patent: 5398836 (1995-03-01), Luch et al.
patent: 5507406 (1996-04-01), Urciuoli et al.
patent: 5511679 (1996-04-01), Beck
patent: 5511680 (1996-04-01), Kinne
Photographs of Quaker.RTM. Oatmeal pull tab lid (date unknown).
Photographs of Del Monte Lite Fruit Cup.RTM. pull tab lid (date unknown).

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