Substrate transport apparatus with multiple arms on a common axis of rotation
First Claim
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1. A substrate transport apparatus comprising:
- a drive section;
two independently movable arm assemblies connected to the drive section on a common axis of rotation; and
substrate holders connected to the arm assemblies on respective first and second substrate holder axes, wherein said substrate holder axes are capable of being simultaneously coaxial with said common axis during extension and retraction.
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Abstract
A substrate transport apparatus having a drive section, two independently movable arm assemblies connected to the drive section on a common axis of rotation, and substrate holders connected to the arm assemblies. The drive section includes three coaxial drive shafts with a pulley connected to one of the shafts. The arm assemblies are connected to respective ones of the two other shafts.
127 Citations
24 Claims
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1. A substrate transport apparatus comprising:
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a drive section;
two independently movable arm assemblies connected to the drive section on a common axis of rotation; and
substrate holders connected to the arm assemblies on respective first and second substrate holder axes, wherein said substrate holder axes are capable of being simultaneously coaxial with said common axis during extension and retraction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A substrate transport apparatus comprising:
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two independently movable arm assemblies;
substrate holders connected to the arm assemblies on respective first and second substrate holder axes; and
a drive section having a frame, a pulley rotatably connected to the frame by a first drive, and second and third drive sections connected to the arm assemblies, wherein the pulley is operably connected to both the two arm assemblies by transmission members, said drive sections being respectively connected to said arm assemblies on a common axis, wherein said substrate holder axes are capable of being simultaneously coaxial with said common axis during extension and retraction. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A substrate transport apparatus comprising:
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N independently movable arm assemblies, each arm assembly having A axes of rotation about which at least a portion of the arm assembly can rotate, wherein N and A are integers greater than one;
substrate holders connected to the arm assemblies on respective first and second substrate holder axes, and means for independently rotating each of the arm assemblies about their respective A axes, the rotating means comprising M motors, wherein M is an integer less than N times the smallest value of A, wherein said substrate holder axes are capable of being simultaneously coaxial with said A axes during extension and retraction. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A substrate transport apparatus comprising:
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a drive section;
two independently movable arm assemblies connected to the drive section on a common axis of rotation;
substrate holders connected to the arm assemblies on respective first and second substrate holder axes, wherein said substrate holder axes are capable of being coaxial with said common axis during extension and retraction, further comprising two transmission members connected between the pulley and separate respective ones of the arm assemblies, wherein the drive section comprises three motors, a first one of the motors connected to the pulley, a second one of the motors connected to a first one of the arm assemblies, and a third one of the motors connected to a second one of the arm assemblies, wherein each of the motors comprises a magnetic stator stationarily connected to the frame and a magnetically driven rotor, and wherein the rotors and stators have a sleeve therebetween.
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24. A substrate transport apparatus comprising:
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a drive section;
two independently movable arm assemblies connected to the section on a common axis of rotation;
substrate holders connected to the arm assemblies on respective first and second substrate holder axes, wherein said substrate holder axes are capable of being coaxial with said common axis during extension and retraction, wherein the drive section comprises a frame and a pulley rotatably connected to the frame on the common axis of rotation, further comprising two transmission members connected between the pulley and separate respective ones of the arm assemblies, wherein the drive section comprises three motors, a first one of the motors connected to the pulley, a second one of the motors connected to a first one of the arm assemblies, and a third one of the motors connected to a second one of the arm assemblies, wherein each of the motors comprises a magnetic stator stationarily connected to the frame and a magnetically driven rotor, and wherein the drive section comprises three coaxial shafts having the rotors thereon.
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Specification