Patent ID: 6339266
Filing Date: 2002-01-15
Classification: B23Q,G03F,H02K

Abstract:
A planar motor device comprising:an armature unit including a plurality of armature coils arranged in a matrix shape along a guide surface, which have a rectangular current path; and a magnetic pole unit arranged opposing said armature unit with respect to said guide surface, which has a plurality of thrust generating magnets having a rectangular magnetic pole surface with a side length longer than an arrangement period of said armature coil and is not equal to an integral multiple of said arrangement period, said plurality of thrust generating magnets arranged in a matrix shape in an arrangement period of an integral multiple of said arrangement period of said armature coils and having a different adjacent polarity of said magnetic pole surface in a row direction and a column direction, and said armature unit and said magnetic pole unit relatively move in a direction along the guide surface.