Receptacles – Closures – Removable closure retained by ductile in situ deformation
Patent
1988-03-30
1989-01-24
Hall, George T.
Receptacles
Closures
Removable closure retained by ductile in situ deformation
220 74, 220359, B65D 3900
Patent
active
047996021
ABSTRACT:
A plug lid for fitting in an aperture in a container comprises a peripheral flange, a plug wall extending from the inner periphery of the flange, a retaining bead protruding laterally from the plug wall at a distance from the flange, an annular portion extending inwardly from the plug wall, a frustoconical portion extending axially and inwardly from the inner periphery of the annular portion to support a central panel in or near the plane of the peripheral flange. The annular portion joins the inside of the plug wall adjacent the retaining bead and extends inwardly and axially at an obtuse angle A.degree. to the plug wall to join the frustoconical portion. The lids may be moulded from polyethylene, polypropylene or nylon.
REFERENCES:
patent: 4518097 (1985-05-01), Milton et al.
patent: 4577776 (1986-03-01), Rayner et al.
patent: 4606474 (1986-08-01), Dudzik
patent: 4667842 (1987-05-01), Collins
Collins Malcolm G.
Rayner Adrien P.
Hall George T.
Metal Box p.l.c.
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