Patent ID: 8283813
Filing Date: 2012-10-09
Classification: H02K,Y10S,Y10T

Abstract:
1. A drive section for a substrate transport arm comprising: a frame; at least one stator mounted within the frame, the stator including a first motor section and at least one stator bearing section; and a coaxial spindle magnetically supported substantially without contact by the at least one stator bearing section, where each drive shaft of the coaxial spindle includes a rotor, the rotor including a second motor section and at least one rotor bearing section configured to interface with the at least one stator bearing section; wherein the first motor section is configured to interface with the second motor section to effect rotation of the spindle about a predetermined axis and the at least one stator bearing section is configured to effect at least the substantially contactless support of the coaxial spindle and substantially solid state leveling of a substrate transport arm end effector connected to the coaxial spindle through an interaction with the at least one rotor bearing section.