Patent ID: 8068002

Claim:
A magnetic device, comprising: a substrate ( 33 ): a first movable body ( 10 ) attached to said substrate having a first rotational axis, said first movable body having at least a first end ( 13 ) and comprising a first permanent magnet ( 11 ) having a first magnetic field and a permanent magnetization moment; a second movable body ( 50 , or 70 ) placed in proximity to said first movable body, said second Movable body having a second rotational axis and at least a third end ( 53 , or 73 ); said first and second movable bodies arc arranged in such a way whereby said first end is attracted to said third end; or said first end repels said third end; a third magnet ( 20 ) having a single coil encaging said first movable body, wherein passing a current through said coil generating a third magnetic field passing through the whole body of said first permanent magnet and said third magnetic field comprising a main component primarily perpendicular to said permanent magnetization moment whereby the vector-cross product of said third magnetic field and said permanent magnetization moment producing a torque on said first permanent magnet and causing said first movable body to rotate about said first rotational axis and causing said second movable body to rotate about said second rotational axis; wherein said third magnet is controllable to cause said first movable body and second movable body to settle in at least one stable state related to said substrate.