Patent ID: 7560705

Claim:
A rotational end effector for a scan arm, the rotational end effector comprising: an electrostatic chuck comprising a first mounting member, wherein the first mounting member has one or more first electrical connectors and one or more first fluid channels associated therewith; a twist head, wherein the twist head is configured to selectively rotate the electrostatic chuck about a twist axis, the twist head comprising: a generally fixed enclosure; and a rotatable shaft rotatably coupled to the enclosure, wherein the rotatable shaft comprises a second mounting member, and wherein the rotatable shaft has one or more second electrical connectors and one or more second fluid channels associated therewith; and a clamping member, wherein the clamping member is configured to selectively couple the first mounting member of the electrostatic chuck to the second mounting member of the rotatable shaft, wherein the one or more first electrical connectors and the one or more first fluid channels of the electrostatic chuck are selectively connected to the respective one or more second electrical connectors and one or more second fluid channels of the rotatable shaft by the clamping member.