Lightweight frame-type elastomer damping spacer

Abstract

A damping spacer having substantially all metallic components thereof made from wrought materials is disclosed. The spacer has a stamped wrought metal frame and a plurality of extruded metal conductor clamp arms which are secured to the frame in a manner that dampens conductor vibrations. Each clamp arm extends outwardly from the frame and is secured to the frame by an extruded metal pivot pin which is affixed to the frame. Each pivot pin has a noncircular cross-sectional shank which extends through a noncircular opening provided in each clamp arm. An elastomer damping collar is inserted on each pivot pin shank so as to also extend through the respective clamp arm opening. The internal and external surfaces of each collar are sized and configured to intimately mate with the noncircular cross-sectional shank of the respective pivot pin and noncircular opening of the respective clamp arm. As such, rotational movement between the pins and the arms caused by conductor vibration is effectively dampened. Extruded metal stop pins also affixed to the frame engage the clamp arms in a manner that prevents the arms from excessive rotational movement about their respective pivot pins. Clamps are also provided for securing each clamp arm to its respective conductor.