Plug-rivet for securing panels or the like

Claim 1

Improved plug-rivet for securing panels of the like of the type comprised of a flexible one-piece molded plastic body forming a type of enlarged flexible hexagonal frame, at one of the sides whereof is disposed a cylindrical cup-shaped head provided with a pre-determined diameter large bore and an inner smaller diameter diameter aperture opening through the base thereof, said head having a laterally extending flange forming a sharp angle with the upper lateral sides of the frame; at the opposite lower side of said frame is disposed a cylindrical appendix having a portion of pre-determined diameter smaller than that of the aperture in the base of said head and a second larger portion having a plurality of frusto-conical segments provided with annular teeth to be fixed or retained in the lower aperture of the mentioned cylindrical head, essentially characterized in that said cylindrical appendix includes a shank having a small diameter which passes through the aperture and bore corresponding to the head and protruding therefrom, said head being substantially continuous and spaced laterally from said frame and capable of lateral expansion when said shank constituting the gripping point for the tool used to pull same causes the cylindrical appendix to be housed in the head in a tight fit condition.