Back to results
US 4,360,121 AGranted
Easy-open lid closure arrangement
AssigneeContainer Corporation of America
InventorCharles R. Helms
Life of this patent
Estimating the term…
Abstract
An easy-open closure arrangement for a composite plastic and paperboard lid which includes a pull tab for forcing a portion of the paperboard away from the plastic rim to permit complete detachment and removal of the central paperboard panel from the outer plastic rim.
Claims5
An easy-open closure arrangement for a composite plastic and paperboard lid, comprising:
- (a) an annular molded plastic rim including an outer, side flange, adapted for attachment to a wall of a container body, and an integral, inner, end flange extending radially radially inward therefrom:
- (b) a relatively thin paperboard central panel having a marginal portion of its upper surface bonded to a lower surface of said rim end flange;
- and
- (c) said rim including an integral pull tab being pivotally mounted with respect to said rim, said pull tab having a handle portion and a nose portion, said nose portion being engageable with a portion of said central panel, said handle portion of said pull tab being lifted causing said nose portion of said tab to depress downwardly a portion of said central panel to force it away from said rim end flange and permit the complete detachment and removal of said central panel from said rim.
1 more element
Dependencies are inferred from the claim text.