Patent ID: 6129077
Filing Date: 2000-10-10
Classification: B23D,B24D,B28D

Abstract:
A substantially disc-shaped cutting tool having a central axis (Z) and a mounting hole (4); the tool comprising:(a) a support includinga cutting portion (5) including at least one abrasive peripheral surface (2) disposed on an outside thereof, and,a connecting portion (8) fixed to said cutting portion and drivable to rotate the tool about the central axis, the connecting portion extending from said cutting portion to a central rim (16) surrounding the mounting hole; and(b) high rigidity sound-dampening material fixed on both sides of said connecting portion, said sound dampening material comprising a composite material selected from the group consisting of (1) carbon fibers bonded with high molecular weight polymer filaments, (2) carbon fibers bonded with kevlar fibers, (3) sintered carbon, and (4) laminated carbon fibers between which at least one sheet of glass fiber is inserted.