Hinged semi-rigid container having wall stiffening means

Details Hinged semi-rigid container having wall stiffening means Hinged semi-rigid container having wall stiffening means

1994-12-12

1996-05-14

Shoap, Allan N.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

206508, 206518, 206519, 229406, 220 423, 220337, B65D 4314

Patent

active

055159931

ABSTRACT:
A thermoplastic hinged container having stiffened side walls and having spaced channels in a shoulder/flange seal portion of the container base and mating stiffening lugs in an opposing lid portion to prevent warping of the container during closure and provide improved sealing.

REFERENCES:
patent: 3303964 (1967-02-01), Luker
patent: 3362575 (1968-01-01), Fotos
patent: 4419068 (1983-12-01), Congleton
patent: 4650076 (1987-03-01), Padovani
patent: 4962854 (1990-10-01), Ricci
patent: 5012928 (1991-05-01), Proffitt et al.
patent: 5046659 (1991-09-01), Warburton
patent: 5092479 (1992-03-01), Wells
patent: 5145068 (1992-09-01), Schmitz et al.
patent: 5158209 (1992-10-01), Reil et al.

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