Patent ID: 6530830
Filing Date: 2003-03-11
Classification: B24D

Abstract:
A sanding disc comprising:a polymeric foam disc of resiliently compressible foam, said foam disc having an axis, opposite axially spaced major surfaces, a predetermined diameter, and a peripheral surface about said axis extending between said major surfaces; an abrasive disc having an axis, opposite first and second axially spaced major surfaces, a peripheral surface about said axis between said major surfaces, and a diameter larger than the diameter of said foam disc, the second major surface of said abrasive disc being adhered to one major surface of said foam disc with said discs being coaxial, and said abrasive disc comprising a layer of backing material having opposite major surfaces, a layer of abrasive material, and a layer of resin adhering said layer of abrasive material along the major surface of said layer of backing material opposite said foam disc with said layer of abrasive material defining the first major surface of said abrasive disc, said abrasive disc including a circular central portion having an outer diameter smaller than the outer diameter of said foam disc, with a portion of said major surface along said central portion being generally planar, and said abrasive disc including an annular peripheral portion extending from said central portion to said peripheral surface of said abrasive disc, with a portion of said first major surface along said annular peripheral portion being generally cylindrically convex with the portion of the first major surface along the planer circular central portion being generally tangent to the adjacent part of the portion of the first major surface along the annular peripheral portion so that the curvature of the annular peripheral portion positions said peripheral surface of said abrasive disc in a plane passing through said foam disc.