Patent ID: 7681869

Claim:
A damping apparatus for the damping of vibrations, comprising: a substantially cylindrical damping body having a bore therethrough and configured to be positioned in a cavity in a boring bar; and a longitudinal central body rigidly connectable to the boring bar that is to be damped, the longitudinal central body disposed in the bore and the damping body is connected to the longitudinal central body through two elastic elements with an opening where the longitudinal central body is passing, two washers rigidly connected to the longitudinal central body such that the damping body is placed between these washers, each of the two washers being located at each end of the damping body; the washers and the elastic elements are rigidly secured to the longitudinal central body; wherein each of the two elastic elements comprises two opposing parallel end faces, wherein one of the two opposing end faces is bonded to each of the two washers while the other of the two opposing end faces is bonded to the damping body, wherein the elastic elements transfer vibratory motion from the central body to the damping body substantially by shear force, wherein the elastic elements are made of an elastomeric material and wherein a radially outer peripheral surface of each elastic element is prevented from contacting the damping body.