Patent ID: 7645112

Claim:
A transport apparatus for transporting a predetermined object comprising: a housing having an airtight structure, arranged to be attached to and in communication with a lower part of a vacuum chamber; first, second, and third driving shafts that are provided in the airtight structure of the housing to be independently rotatable around a predetermined coaxial rotary shaft; permanent magnets arranged at predetermined positions of the first, second, and third driving shafts in the airtight structure of the housing, respectively; first, second, and third electromagnetic stators provided in the airtight structure of the housing to correspond to the respective permanent magnets, wherein said first, second, and third electromagnetic stators are attached to an inside of a wall in the airtight structure of the housing; a driving means configured to supply driving currents to the first, second, and third electromagnetic stators based on predetermined information; and a movable arm assembly configured to be driven by the first, second, and third driving shafts to transport a predetermined object to be transported, wherein the housing is arranged to be attached to and in communication with the lower part of a vacuum chamber in an airtight manner by an extensible bellows and contains a vertical moving mechanism for moving the movable arm assembly in a vertical direction.