Patent ID: 6864602

Claim:
A linear motor comprising: a stator element; and a movable element movable with respect to said stator element, wherein one of said stator element and said movable element includes a coil unit, the other of said stator element and said movable element includes a magnet unit, said coil unit includes an inner yoke extending in a moving direction and a coil arranged outside said inner yoke, said magnet unit includes a magnet arranged outside said coil, each of said inner yoke, coil, and magnet includes a plurality of flat portions, the plurality of flat portions of said inner yoke are parallel to an axis of said coil, each flat portion of said inner yoke is parallel to the corresponding flat portion of said coil and the corresponding flat portion of said magnet, a length of said inner yoke in a direction along the axis of said coil is longer than a length of said magnet in the direction along the axis of said coil, and said inner yoke has a prismatic structure formed by the plurality of flat portions supported by a support member.