Patent ID: 7887333

Claim:
An apparatus comprising: a first plate having a first plurality of conductive segments on a surface of the first plate, wherein the first plate has an axis of rotation, the first plurality of conductive segments has a circular shape with a first center through the axis of rotation, each of the first plurality of conductive segments has a different diameter, and portions of the first plurality of conductive segments are offset from each other in the first plurality of conductive segments along the axis of rotation; and a second plate having a second plurality of conductive segments on a surface of the second plate, wherein the second plate has the axis of rotation, the second plurality of conductive segments has the circular shape with a second center through the axis of rotation, each of the second plurality of conductive segments has the different diameter, portions of the second plurality of conductive segments are offset from each other in the second plurality of conductive segments along the axis of rotation, and the first plurality of conductive segments remain in communication with corresponding ones of the second plurality of conductive segments to conduct signals during rotation of the first plate and the second plate relative to each other.