Patent ID: 6129540
Filing Date: 2000-10-10
Classification: B24D,Y10T

Abstract:
A production tool for manufacturing abrasive articles comprising a substantially planar sheet structure having at least first and second cavities formed on a major surface thereof, each cavity having a precise shape defined by a distinct and discernable boundary which includes specific dimensions, wherein said first cavity has a first precise shape having specific first dimensions and said second cavity has a second precise shape having second specific dimensions, wherein each of said cavities has a boundary defined by a plurality of planar surfaces wherein adjacent planar surfaces of each cavity meet at an edge to define an angle of intersection therebetween, wherein at least one angle of intersection of said first cavity is different from all of the angles of intersection of said second cavity, wherein the major surface has a machine direction and opposite side edges parallel to the machine direction, the at least first and second cavities comprising a plurality of cavities arranged in a plurality of elongate rows deployed in a fixed position on the major surface, each row having a longitudinal axis located at its transverse center and extending along an imaginary line which intersects the opposite side edges at an angle which is neither 0.degree. nor 90.degree., wherein each of the rows comprises a plurality of the cavities which are intermittently spaced along said longitudinal axis and wherein the imaginary lines of at least two of the rows intersect.