ES112595U - A self-center threading brake. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A self-locking threaded fastener, consisting of a head adapted to fit an insertion tool, threaded elements that serve to screw said fastener and join it with a part, an annular projection extending laterally from the lower part of the fastener. Said head, the upper wall of said projection inclined downwardly with respect to the axis of said head, so that the projection is thicker at the internal end than at its periphery, an area of rigid, annular surface, placed below said head, which surrounds said threaded elements, placed in a plane at right angles to the axis of said head and which provides a rigid, annular, flat support surface, an annular groove made in the lower face of said projection, surrounding said surface supporting, annular, rigid, and serving to provide flexibility to the external, annular, peripheral part of said projection, an annular face part external arc on the underside of said outer, annular, peripheral part of the projection, which surrounds said groove, and which is placed in a plane higher than the plane of said abutting, rigid, support surface, a circular row of teeth of entrabe, endowed with pointed corners, circumferentially spaced, extending downwardly from said outer annular face part, between said groove and the peripheral edge of said projection, said annular support surface being placed, in a plane located between three tenths and six-tenths, more or less, of the distance between the plane that extends through said annular, external surface of said projection and the plane that extends through the outer ends of said teeth, teeth that are frictional and gripping contact with the piece in which said fastener is screwed, while said rigid bearing surface is brought into contact with said piece and which is bent toward said external peripheral part of the projection in the direction opposite said piece, subjecting it to tension when screwing said fastener in said piece. (Machine-translation by Google Translate, not legally binding)