Patent ID: 6322119
Filing Date: 2001-11-27
Classification: B25J,H01L,Y10S

Abstract:
A robot arm end effector for a holding a workpiece, comprising a substantially horizontally extending member having at least one protruding member arranged for pressing an edge of a workpiece overlying said horizontally extending member, and a movable member selectively movable between a first position to load/unload a workpiece and a second position to press the edge of the workpiece against the protruding member to grip said workpiece, wherein said at least one protruding member projects from the extending member and has a base with a declined top surface at an acute angle relative to the extending member and a top flange over the base, and wherein the top surface of the base extends beyond the top flange to hold the backside of the workpiece apart from the extending member when the moveable member is in the first position and the workpiece rests on the top surface of the base.