Patent ID: 7888827

Claim:
A linear synchronous motor comprising: a first member in which N poles and S poles are alternately arranged linearly, for generating a magnetic field; and a second member which is opposed to the first member at an interval therefrom, and which generates a shifting magnetic field along an arrangement direction of the magnetic poles along with passage of alternating currents of a plurality of phases, for applying a thrust force to the first member, wherein the second member comprises a core member in which teeth, a number of which is more than twice a number of phases of the alternating currents, are arranged, and a coil which is wound around the teeth of the core member and through which the alternating current of any one of the phases passes, and the alternating current is a three-phase alternating current of a u phase, a v phase, and a w phase; the u-phase passes through the coil wound around the tooth at one end of the core member; the w phase passes through the coil wound around the tooth at another end of the core member; and a distal end of the tooth around which the coil of the v phase is wound is spaced apart from the first member further than distal ends of the teeth around which the coil of the u phase and the w phase is wound.