Container cover assembly

Claim 1

A cover assembly adaptable for fastening to a container formed of flexible plastic material, comprising a hollow neck section that may be fitted to the mouth of a container, a cap section pivotally mounted to the neck section by resilient hinge means, said hinge means shaped and located so as to be elastically deformed and to provide a spring bias so as to alternatively maintain the cap section in either a fully open position or a fully closed position, said cap section formed with an internal flat surface, said neck section formed with an annular flange bounding a central opening at the exterior end of the neck section, with said opening communicating to the hollow interior of the neck section and the mouth of a container to which the neck section may be joined, said annular flange formed with an external flat surface that engages, in sealing relation, the internal surface of the cap in the fully closed position of the cap to the neck section so as to seal the central opening of the neck section in the fully closed position of the cap section to the neck section, together with elastic means to maintain the cap normally in the fully closed position, in which a first upraised neck sleeve section extends from the flange of the neck section to bound the neck central opening, and in which a second upraised cover sleeve section extends from the internal surface of the cap section, said second cover sleeve section formed with a blind central opening bounded by an interior wall of a shape and size to fit about the first neck sleeve section, in the closed position of the cap, where said first neck sleeve section terminates in an annular flange that forms a projecting rim of a greater diameter than the minimum diameter of the central opening of the second cover sleeve section, and said second cover sleeve section is formed with an annular slot concentric to and communicating with said central opening, said slot of a diameter at least that of the said annular flange of the neck sleeve section, with said slot located substantially at the junction of the second cover sleeve section and the internal surface of the cap section, such that said annular flange serves to both wipe against the surface of the interior wall of the cover sleeve section during closure of the cap section to the cover section so as to wipe any extruded contents of a container to which the assembly is fastened and to force such wiped contents back into the container through the neck central opening and to latch the cap section to the neck section when the annular flange of the cover section is engaged on the annular slot of the cap section.