Patent ID: 7207870

Claim:
Apparatus, comprising: a lapper having a first plate and an opposing second plate having a central rotated shaft and an outer perimeter edge; a piston ring carrier disposed on the second plate meshingly interacting with the outer perimeter edge and the central shaft of the second plate; at least one piston ring receiving opening formed in the piston ring carrier; a spacer carried by the carrier projecting into the at least one piston ring receiving opening; a piston ring seal, which is severed forming an end gap, disposed in the at least one piston ring receiving opening locating the spacer at the end gap preventing the piston ring seal from rotating relative to the at least one piston ring receiving opening; and the first plate disposed in a working relationship with the second plate sandwiching the carrier and the piston ring seal therebetween, wherein rotation of at least one of the first and second plates imparts rotation to the carrier and orbital movement of the carrier over the second plate about the rotated shaft.