Patent attributes
A substrate transport apparatus including a frame, an upper arm rotatably mounted to the frame about a shoulder axis, a forearm rotatably mounted to the upper arm about an elbow axis where the forearm includes stacked forearm sections dependent from the upper arm through a common joint, and independent stacked end effectors rotatably mounted to the forearm, the forearm being common to the independent stacked end effectors, wherein at least one end effector is mounted to the stacked forearm sections at a wrist axis, where the forearm is configured such that spacing between the independent stacked end effectors mounted to the stacked forearm sections is decoupled from a height build up between end effectors accommodating pass through instrumentation.
