Container cover construction

Claim 1

A cover for containers having an external peripheral bead at an upper edge thereof, said cover being formed of an easily flexed material and comprising a top wall, a downwardly extending peripheral skirt, and an inverted peripheral channel connecting said skirt to said top wall and for receiving said peripheral bead of an associated container, said skirt including a plurality of peripherally spaced inwardly directed generally U-shaped detents and a plurality of peripherally spaced flutes disposed between and in part defined by adjacent portions of said detents, said flutes terminating in a relatively straight, upper horizontally extending portion cooperatively forming an interrupted peripheral base line positioned radially adjacent the outer lower extent of said container bead receiving channel and about which said skirt may outwardly flex when said container bead is positioned within said channel with upper inner surface portions of said detents in contact therewith, said upper horizontally extending portions radially outwardly offset from circumferentially adjacent portions of said detents, said detents being most deeply inwardly directed at the bottom portions thereof and gradually upwardly extending so as to merge with said lower extent of said container bead receiving channel along said peripheral base line such that the upper extent of both detents and said flutes coextensively terminate at said peripheral base line.