Patent ID: 7731042

Claim:
A closure for a container that has an opening to the container interior where a product may be stored, said closure comprising: (A) a body for extending from said container at said opening, and defining a discharge aperture for communicating with said opening; (B) a lid movable between a closed position occluding said aperture and an open position spaced from said aperture; (C) a continuous hinge structure molded unitary with said body and lid to include (a) a web having a narrow portion and at least one wider end, (b) a body hinge connecting said body to said web along one side of said web and having opposite end edges, and (c) a lid hinge connecting said lid to said web along the other side of said web and having opposite end edges; and wherein the closure further includes either or both of the following features I and II: (I) a body side stress-relief recess defined beyond said web in the body at each of said end edges of said body hinge, each said body recess defining an inner surface aligned with said body hinge and having a generally U-shaped configuration extending both (1) into said body in the direction away from and generally beneath the respective side of said body hinge, and (2) away from the respective body hinge end edge in the direction laterally away from the respective end edge of said body hinge, each said body recess having a surface which extends continuously from a vertically oriented wall portion of said body outwardly to an outwardly facing, vertically oriented surface of said body; and (II) a lid side stress-relief recess defined beyond said web in the lid at each of said end edges of each said lid hinge, each said lid recess defining an inner surface aligned with said lid hinge and having a generally U-shaped configuration extending both (1) into said lid in the direction away from and generally above the respective side of said lid hinge, and (2) away from the respective lid hinge end edge in the direction laterally away from the respective end edge of said lid hinge, each said lid recess having a surface which extends continuously from an inwardly facing, vertically oriented surface of said lid outwardly to an outwardly facing, vertically oriented surface of said lid.