Patent ID: 8922067

Claim:
A linear motor comprising: a stator having a single coil and a cylindrical magnetic guiding member without a stator terminal shoe, the magnetic guiding member having a first end and a second end, the coil being enclosed by the magnetic guiding member over its entire length; and an armature which is surrounded, at least partially, by the coil and which linearly displaces parallel to the stator, the armature comprising a first permanent magnet and a second permanent magnet of opposite polarity, as well as a pole piece between the two permanent magnets, the armature being distant from the magnetic guiding member by at least a thickness of the coil; wherein the length of the armature approximately corresponds to the length of the magnetic guiding member of the stator; wherein displacement of the armature is linearly proportional to an electrical current through the coil; wherein in a currentless state of the coil a magnetic flux flows from sides of the permanent magnets distant to the pole piece to the ends of the magnetic guiding member.