Patent ID: 6244414
Filing Date: 2001-06-12
Classification: F16D

Abstract:
A clutch driven disc assembly comprising:a hub having an axis of rotation;an annular spring plate rotatably fixed to the hub;a friction disc assembly mounted concentric with the axis of rotation for rotation relative to the spring plate;a plurality of drive springs operably disposed between the spring plate and the friction disc assembly;the friction disc assembly including:a reinforcing plate having spring pockets receiving the drive springs;a substantially annular disc fixed to the reinforcing plate; anda friction material button fixed to the substantially annular disc and comprising:a metallic friction material cookie having a plurality of apertures,a backer plate fixed to the friction material, andat least three spot welds within three corresponding apertures in the cookie with at least one of the welds being offset from a line joining two others of the welds and the welds joining the substantially annular disc and the backer plate which fixes the friction material button to the substantially annular disc.