Abstract: Damping core articulated joint for mechanical articulated arm systems subject to vibrations, in which the articulation of the articulated joint is passed through by a hole of cross-section other than circular, comprising an elastomer ring core passed through by a through hole of cross-section other than circular, the core outside having a central annular band of planar pattern, to which two annular ridges are connected as diverging from opposite sides relative to the central band, and a tubular insert also of not circular cross-section, inserted in the through hole of the ring core and made of a stiffer material than that of the elastomer.

Abstract: Spacer-damper, to be installed on wires of aerial electrical lines, comprising a central body having as many arms hinged thereon as the wires associated with the spacer, with a vise at the end of each arm designed for engagement on the respective wire, in which the central body has at the base a sloping plane shaping from center to the sides designed to create on the spacer an effect of negative lift, while each vise at the wire embracing zone has a bearing divided into two halves, for allowing the free rotation of the wire about its own axis.