1
George L Haywood: Method of making a flexible resilient abrasive. Norton Company, Oliver W Hayes, July 26, 1977: US04038047 (28 worldwide citation)

A resilient, controlled-density, porous, abrasive material is manufactured having a backing member which in the preferred embodiment is a foam layer of a plurality of discrete resilient particles of varying degrees of compressibility. The backing member is provided from a larger body of foam materia ...


2

3

4

5

6

7

8