Patent ID: 8366375

Claim:
A substrate transfer apparatus comprising: a first drive shaft and a second drive shaft respectively driven by a drive source installed on atmosphere side; a first link mechanism including a first arm and a fourth arm; a second link mechanism including a second arm and a third arm; and a vacuum seal mechanism including, a lip portion coming into line contact with each of the drive shafts, a presser member for pressing the lip portion to each of the rotating shafts, and a lubricant holding member for holding lubricant to be supplied to the lip portion, wherein the first arm is fixedly attached to the first drive shaft, the second arm is fixedly attached to the second drive shaft, the third arm is rotatably attached to the first drive shaft and shares the first drive shaft with the first arm, and the fourth arm is rotatably attached to the second drive shaft and shares the second drive shaft with the second arm.