Patent ID: 11948817
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A substrate processing system comprising:
a transfer region housing defining a transfer region, wherein a sidewall of the transfer region housing defines a sealable access for providing and receiving substrates;
a plurality of substrate supports disposed within the transfer region; and
a transfer apparatus comprising:
a central hub including a first shaft and a second shaft extending about and concentric with the first shaft, wherein the second shaft is counter-rotatable with the first shaft,
a first end effector coupled with the first shaft, the first end effector comprising a plurality of first arms having a number of first arms equal to a number of substrate supports of the plurality of substrate supports, wherein:
the first end effector further comprises a plurality of first end pieces; and
each first end piece of the plurality of first end pieces comprises a first contact member that engages a lateral surface of a substrate and does not include a horizontally extending shelf, and

a second end effector coupled with the second shaft, the second end effector comprising a plurality of second arms having a number of second arms equal to the number of first arms of the first end effector, wherein:
the second end effector further comprises a plurality of second end pieces; and
each second end piece of the plurality of second end pieces comprises a second contact member that engages the lateral surface of the substrate.