Patent ID: 6879064

Claim:
A linear motor comprising: (a) an outer yoke forming a fixed section of the linear motor and including: (a-1) a laminated core formed by laminating thin magnetic plates, each one of the plates having a plurality of slots; (a-2) a coil wound in the plurality of slots wherein supply of an electric current though the coil produces at least three magnetic poles on a surface of the outer yoke, (b) an inner yoke facing the outer yoke at a given gap in between and including: (b-1) a laminated core formed by laminating thin magnetic plates; (b-2) a permanent magnet rigidly stuck to the laminated core of the inner yoke, and (c) an output shaft, wherein the inner yoke is rigidly mounted to the output shaft and forms a movable section of the linear motor wherein the permanent magnet shapes in a flate-plate.