Patent ID: 8801497
Filing Date: 2014-08-12
Classification: B24D,Y10T

Abstract:
1. An abrasive article for lapping or cleaning a surface of a substrate, the abrasive article comprising: an elastomeric support; a plurality of discrete abrasive members coupled to the elastomeric support so that each abrasive member is adapted to move substantially independently in at least pitch and roll relative to the elastomeric support; a preload mechanism adapted to apply a biasing force to each of the abrasive members to bias first surfaces of the abrasive members toward the substrate; one or more air bearing features on the first surfaces of the abrasive members configured to generate hydrodynamic forces during motion of the abrasive article relative to the substrate, wherein the hydrodynamic forces maintain leading edges of the abrasive members further away from the substrate than trailing edges; and abrasive features located at an interface of the first surfaces of the abrasive members adapted to lap or clean the substrate in the presence of the hydrodynamic forces.