between the stator parts a and b so that a travelling magnetic field for urging the movable element 6 in the movable direction is generated by a cooperation between the stator parts a and b as shown in fig1 16 the difference in energized phase between the stator parts a and b is u03c0 2 when the linear motor is a two phase linear motor as shown in fig1 an electric current supplied to each of the stator parts a and b may be changed along a sine curve as shown in fig1 the electric current supplied to each of the stator parts a and b may changed by changing a pulse width of voltage or current to be supplied as shown in fig1 the stator parts a and b may be arranged in parallel and the movable members 6 may be arranged in parallel the movable members 6 arranged in parallel may be one piece as a matter of course the linear motor may be three four or five phase linear motor a distance between the pair of magnetic poles of one of the stator parts and the pair of magnetic poles of another one of the stator parts adjacent.