Rotating pad support structure for floor buffing machine

Claim 1

A rotating pad support structure for a high speed floor buffing machine adapted to secure and mount in contact with a floor to be buffed and to rotationally drive in excess of 1,000 rpm a flexible circular floor buffing pad, said structure comprising a drive disc having a generaly horizontal position in use with said pad mounted on the underside thereof to present a working face of said pad to the floor; said disc having a central drive axis and being formed with surrounding concentric areas being successively at increasing radii axially offset in the direction of the floor, the outermost of said concentric areas bending and supporting said pad into a peripheral annulus into substantially planar contact with the floor; and means connecting said pad and disc and connecting said pad and disc and supporting portions of said pad interior of said annulus in spaced relation to the floor to provide an effective floor buffing area of said pad confined to said peripheral annulus; said buffing area and peripheral annulus comprising about 40% of the area of said pad face.