Torsionally rigid cover

Details Torsionally rigid cover Torsionally rigid cover

1995-06-07

1997-06-10

Cronin, Stephen K.

Receptacles

Closures

Combined or convertible

220605, 220628, 123 9038, 123195C, B65D 4156, F02B 7700

Patent

active

056367597

ABSTRACT:
A cover of polymeric material developed substantially in cup shape is disclosed. The bottom of the cover has stiffening ribs on its inner side. The stiffening ribs are developed as a cross bracing, the cross bracing being interrupted at least in part by gaps, the stiffening ribs being connected to each other by a secondary connecting element spanning the gaps.

REFERENCES:
patent: 2833163 (1958-05-01), Trombley
patent: 4525401 (1985-06-01), Pocock et al.
patent: 4577775 (1986-03-01), Kresin
patent: 4647325 (1987-03-01), Bach
patent: 4683850 (1987-08-01), Bauder
patent: 4993375 (1991-02-01), Akihiko
patent: 5032213 (1991-07-01), Thomas, Jr.
patent: 5129371 (1992-07-01), Rosalik, Jr.
patent: 5228420 (1993-07-01), Furuya et al.
patent: 5323745 (1994-06-01), Sato et al.

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