Patent ID: 6056136
Filing Date: 2000-05-02
Classification: B65D

Abstract:
In combination, a closure and a container, said container having a mouth defined by a cylindrical neck which includes a plurality of vertically spaced helical threads formed on the outer surface thereof in generally parallel relationship to each other to define a corresponding plurality of helical grooves therebetween, said closure comprising:an end panel sized and positioned to overlie said container mouth,a flexible cylindrical skirt extending downwardly from said end panel,said skirt having a cylindrical inner surface,a plurality of radially inwardly projecting spaced lugs having a base portion integral with and inwardly extending from said cylindrical inner surface of said skirt and a tip portion spaced radially inwardly from said cylindrical inner surface of said skirt, said lugs being circumferentially disposed around said inner cylindrical skirt surface and positioned thereon for engagement with select ones of the threads on the cylindrical neck of said container when said closure is fully seated on a neck finish of said container in sealing relationship therewith,said lugs being composed of a deformable plastic material and being sized so that when said closure is fully seated on said neck finish of said container an interference fit will be provided between the tip portion of at least one of said lugs and the maximum outer extent of a thread on said container in contact therewith,said spaced lugs having an axial height at any given circumferential location such that they will be in contact with only one of said helical threads,said lugs having a circumferential length which will permit at least one of them to be at least partially received within one of said helical grooves so that, upon rotation of said closure when said closure is seated on said neck finish of said container, a leading edge on said at least one groove-received lug will engage an upwardly inclined surface on an adjacent thread, thereby providing an upward camming action to said closure during such rotation,said flexible skirt and lugs being sized to permit said closure to be applied to said container by a direct axial, press-on action without requiring rotation thereof to effect the desired sealing of said closure on said container, andsaid flexible skirt and lugs being sized so that when said closure is applied to said container by said direct axial, press-on action, said flexible skirt expands radially outwardly enabling said lugs to ride over said threads until said closure is fully applied to said container.