Patent ID: 6427566
Filing Date: 2002-08-06
Classification: H01L,Y10T

Abstract:
A self-aligning mandrel assembly, comprising:a cylindrical inner core, the cylindrical inner core having a hole therein and being coupled to a rotating gear; a fulcrum disposed on an outer surface of the cylindrical inner core; a mandrel shell surrounding the cylindrical inner core, the mandrel shell having a wafer preparation material affixed to an outer surface thereof and having a hole therethrough, and the mandrel shell being pivotably supported by the fulcrum such that the mandrel shell aligns with a surface of a substrate when the wafer preparation material contacts the surface of the substrate; and a connector disposed in the hole in the mandrel shell and the hole in the cylindrical inner core so as to transmit rotational power from the cylindrical inner core to the mandrel shell.