ES214840U - Antigiratory pin, retractible and expandable for fixings in hollow paraments or of diverse nature. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Antigiratory pin, retractable and expandable, for fixings in hollow paraments, or diverse nature characterized by the fact that it is constituted by an elongated body and slightly conical, formed by a piece of flexible thermoplastic material, which presents, externally and in operational combination, some longitudinal cuts offset, located in the central area of the body of the pin and, in the upper part or head, decreasing nerves of different length and alternated, so that the nerves of shorter length extend to the vicinity of the upper end of the aforementioned cuts, while the remaining ribs extend between the cuts to a lower area of the pin, whose body also has a succession of circular reliefs, discontinuous, in horizontal arrangement, protruding between the succession of cuts and longitudinal nerves, contributing longitudinal nerves to avoid the rotation of the pin on its e already, to facilitate, at the same time, the correct opening and expansion of the split area, which is subdivided into segments, while the circular reliefs cooperate to the grip and stabilization of the expanded plug when screwing directly, in the inner terminal cone of the same, the fixing screw, which causes the traction of said smooth lower area, without cuts or ribs, producing a retractable movement and the consequent expansion of the split area of the pin, whose operative magnitude is a function of the wall more or less consistent or hollow in which it is inserted, being able to get to form even true knots that prevent the extraction. (Machine-translation by Google Translate, not legally binding)