Patent ID: 7520939

Claim:
A substrate bevel cleaning chamber, comprising: a chamber body defining a processing volume; a rotatable substrate support member positioned in a lower portion of the processing volume; at least three cooperatively rotatable substrate centering posts radially positioned around the rotatable substrate support member such that the posts remain stationary during rotation of the substrate support member, wherein each of the cooperatively rotatable centering posts comprise: a vertical shaft member rotatable about its central axis; a cap member positioned on a distal terminating end of the shaft member; a sleeve member engaged with the vertical shaft member and the cap member to form a fluid seal; a raised central substrate support portion positioned at a rotational center of the cap member, wherein the rotational center of the cap member is substantially aligned with the central axis of the shaft member; and a substrate centering member extending upwardly from the cap member and being positioned away from the rotational center of the cap member; and a fluid dispensing nozzle movably positioned to dispense a cleaning fluid onto the top surface of a substrate positioned on the substrate support member.