PURPOSE: To carry magnetic powder without using a rotating mechanism by laying plural conductor in parallel along a specified path in the width direction of the path, coating the conductors with a jacket member consisting of a non- magnetic material and conducting pulse width modulation (PWM) currents whose phases are shifted by proper amount to the juxtaposed conductors in arranging order.
CONSTITUTION: The conductor parts 4 are divided into proper number of sets where the same even-number of conductor parts exist respectively, and the respective sets of conductor parts 4 are equally dispersed and arranged around a supporting body 3. Namely, in the case that the conductor parts are divided into (m) sets, the respective sets of conductor parts 4 are arranged in alternate (m-1) lines. Then, the conductor part 4A and 4B which belong to different sets are arranged to be in two lines and travel in the same direction. By conducting the alternating currents (PWN currents) by pulse width modulation (PWM) of (m) kinds ((m) phases) whose phases are shifted by π/m to the (m) sets of the conductor parts 4 in arranging order, progressive wave magnetic field which progresses in the direction of C is formed. Thus, the magnetic powder is carried without providing the mechanical rotating mechanism.
SHIMIZU SHIGERU
YAMAMOTO TADAO
INOUE HIDEAKI
SATO YASUTO
NAKAYAMA KENJI
TAKAHASHI HIDEKI
HONDA TOSHIRO
ASAKO KENICHIRO
