Axial flux electromagnetic micromotors

Claim 1

An axial flux electromagnetic micromotor of the type comprising: a stator, a magnetized rotor pivotally mounted for rotation in relation to the stator about an axis of rotation, said rotor having at least one pair of magnetic poles for producing a first magnetic field substantially parallel to said axis of rotation, said stator comprising at least one substantially planar coil extending perpendicular to the axis of rotation for producing a second magnetic field in such a way as to interact with said first magnetic field, a pin fixedly secured to the stator and projecting vertically therefrom for defining along its length said axis of rotation, said rotor further comprising a first and a second flange mounted perpendicular to said axis of rotation, and an outer and an inner sleeve engaging respectively said first and second flanges for defining therebetween an air gap, wherein said inner sleeve is rotatably mounted around said pin and extends substantially over the length thereof, said outer sleeve being coaxially fitted directly around the periphery of said inner sleeve to form therewith a mobile integral assembly having said flanges positioned parallel to one another.