Patent ID: 8758089

Claim:
An abrasive article 120 comprising a sleeve coupling 130 comprising a bore 132 for retaining a shaft of a driven tool; a base plate 140 attached to the sleeve coupling; a resiliently compressible member 150 attached to the base plate and comprising a material having an elastic modulus in a range from about 1500 Pascals to about 4.9×10 5 Pascals when measured at 1 Hz and 25 degrees Celsius; and an abrasive member 170 attached to the resiliently compressible member, the abrasive member comprising an abrasive surface having an area of about 300 square millimeters (mm 2 ) or less; wherein the resiliently compressible member separates the abrasive member from the base plate and provides torsional flex such that the resiliently compressible member and the abrasive member may twist relative to the base plate in response to changes in a rotational direction of the shaft.