Container with slip-on cap retaining means

Claim 1

In a bottle-type container having a body topped by a neck of substantially smaller diameter than the body and adapted for receiving a container closure, the improvement comprising: an annular collar of substantial length between the body and the neck; stop shoulder means located adjacent to the body end of said collar; an overcap within which said neck and collar are received, said overcap having a resiliently flexible skirt which is of an undistorted inside diameter greater than the principal diameter of said collar; a plurality of substantially circumferentially spaced diametrically opposite prominent outward protrusions on said collar extending to a greater diameter than the undistorted inside diameter of said skirt; and circumferentially arcuate areas of substantial width on said collar intermediate said protrusions and lying on a common diameter which is less than said undistorted inside diameter of said skirt; whereby said skirt receives said collar in press-on engagement wherein areas of the skirt directly engaged by said protrusions are stretched radially outwardly and effect corresponding radially inward deflection of the areas of the skirt intermediate the protrusions into frictional retaining engagement with said arcuate areas, so that there is dual frictional retention of the skirt to hold the overcap in place on the container.