| 摘要 |
PURPOSE:To reduce the size and to increase the accuracy by placing a movable element which bridges an edge line on a crest-shaped stator in which traveling surfaces are disposed on both sides of the edge line, and providing pole teeth trains near the edge line, thereby forming the element opposed to the stator in a small size. CONSTITUTION:A movable element 19 which bridges over traveling surfaces 20A and 20B is placed oppositely on a stator 18 formed with the surfaces 20A and 20B on both sides of a crest-shaped edge line 20C connected linearly with the edge line 20C. Pole teeth trains of the prescribed pitch are arranged near at a right angle to the edge line on the surfaces 20A and 20B of the stator 18. The element 19 has a permanent magnet, a core contacted with the magnet and an exciting coil, and a plurality of injecting pores of pressurized air directed toward the surfaces 20A and 20B of the stator 18. |
