Electrical generator or motor structure – Dynamoelectric – Linear
Reexamination Certificate
2007-03-20
2007-03-20
Le, Dang (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Linear
Reexamination Certificate
active
10693104
ABSTRACT:
A positioning apparatus includes a movable member for transmitting a driving force in a driving-axis direction to a stage, a first electromagnet for driving the movable member in the driving-axis direction by forming a magnetic path between the movable member and the first electromagnet and generating first magnetic flux, and a second electromagnet, which is positioned away from the first electromagnet and arranged in an overlapping direction, for driving the movable member in the same direction as the driving-axis direction of the first electromagnet by forming a magnetic path between the movable member and the second electromagnet and generating second magnetic flux having an inverted plurality from the first magnetic flux.
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