Patent ID: 6669434
Filing Date: 2003-12-30
Classification: B25J,H01L,Y10T

Abstract:
A double arm substrate transport unit for transporting a work piece, comprising:a base arm supported by a base so as to be freely rotatable; a first forearm supported by a tip part of said base arm so as to be freely rotatable; a first end effector on which a work piece is placeable, said first end effector being supported by a tip part of the first forearm so as to be freely rotatable; a second forearm supported by the tip part of the base arm so as to be freely rotatable, said second forearm being attached to said base arm above the first forearm; and a second end effector on which a work piece is placeable, said second end effector being supported by a tip part of the second forearm so as to be freely rotatable.