Patent ID: 7988533

Claim:
A polishing wheel comprising: a body defining a central longitudinal axis and a central passage coaxial with the longitudinal axis, the body mountable to a rotating polishing tool; the body having a lower polishing surface defining a planar portion; wherein the lower polishing surface includes a plurality of main recessed fluid passages extending from the central passage to an outer edge of the lower polishing surface, which defines a maximum diameter of the lower polishing surface to define an open fluid flow path from the central passage to the outer edge; wherein the main recessed fluid passages are linear and radially arranged on the lower polishing surface; wherein the main recessed fluid passages have a reduced profile exit passage adjacent to the outer edge, relative to a main portion of the main recessed fluid passages disposed inwardly between the central passage and the exit passage, wherein the exit passages have a smaller depth from the planar portion of the lower polishing surface, relative to a depth of the main portion of the main recessed fluid passages.