Patent ID: 7766340

Claim:
A system for positioning around a rotary element, the system comprising: first and second substantially circular ring elements having inner and outer circumferences; each ring element comprising: a first section comprising: a first section outer rounded edge; a first section first mating edge; a first section inner rounded edge; a first section second mating edge; and at least one aperture; and a second section comprising: a second section outer rounded edge; a second section first mating edge for abutting the first section first mating edge; a second section inner rounded edge; and a second section second mating edge for abutting the first section second mating edge; wherein the first section inner and outer rounded edges and the second section inner and outer rounded edges form the respective inner and outer circumferences when the first section first mating edge and the second section first mating edge are substantially aligned and when the first section second mating edge and the second section second mating edge are substantially aligned, and wherein the first section inner rounded edge comprises a majority of the inner circumference and the first section outer rounded edge comprises a majority of the outer circumference; and wherein the first ring's at least one aperture is aligned with the second ring's at least one aperture, whereby the first ring's first section first mating edge is offset from the second ring's first section first mating edge.