Patent ID: 6981607
Filing Date: 2006-01-03
Classification: B65D

Abstract:
1. A container cap assembly for providing a closure for large mouth containers having male threads surrounding an open end thereof comprising: a molded plastic annular cap body formed symmetrically about a longitudinal axis with a lower and upper section, the lower section having an outer surface and an inner surface defining female threads thereon for cooperation with matching threads on the container, the upper section of the cap body forming an annular upwardly extending flange terminating in a peripheral rim with an inner surface extending downwardly from the rim providing unobstructed access to the container interior; a molded plastic lid member having a top surface terminating in a downwardly extending peripheral rim, a bottom surface and an annular downwardly extending flange spaced inwardly from the peripheral rim; a hinge pivotally connecting the lid member and the cap body whereby the lid member is arranged to pivot between a closed position in which the opening in the container is closed and an open position in which unobstructed access is provided through the opening in the container, the flanges having interlocking sealing surfaces in the closed position with the sealing surfaces of the, cap body and lid member flanges extending outwardly at an acute angle θ to the vertical and inwardly at an acute angle λ to the vertical, respectively, with θ≠λ the interlocking flanges in their closed position locking the assembly together and providing the only sealing means for the container.