Receptacles – Closures – Having means for securing or retaining closure in its closed...
Patent
1982-04-30
1983-10-04
Hall, George T.
Receptacles
Closures
Having means for securing or retaining closure in its closed...
220350, 220 1T, B65D 4314, B65D 5104
Patent
active
044074271
ABSTRACT:
A homogeneous, one piece container cover of stiff but flexible material including two or more cover portions interconnected by integral hinges. The hinges include parallel ridge and groove portions extending across the cover but terminating short of the periphery thereof, and nonridged, preferably generally flat hinge portions extending from the ridges to the periphery of the cover. One portion of the cover is adapted to be attached to a flange around the opening of a container, and the other portion or portions can be opened by flexing the hinge portions. The ridge and groove portions preferably terminate in smooth round or cone type sections, and thickening of one or more of the vertices of ridges and grooves is disclosed to prevent tearing or separation. An insert of stiffer material is configured to conform closely to the shape of a section and is attached thereto to increase the stiffness of a section of the cover, which may span a considerable distance in the case of large containers.
REFERENCES:
patent: 3417897 (1968-12-01), Johnson
patent: 3629901 (1971-12-01), Wolf
patent: 3782583 (1974-01-01), Alley
patent: 4213539 (1980-07-01), Reuter
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