PIEZOELECTRIC STEPPING MOTOR Russian patent published in 2001 - IPC

FIELD: actuating mechanisms for electrical engineering, telemechanics, etc. SUBSTANCE: motor has frame and stator in the form of hollow piezoelectric barrel accommodating cylindrical rotor which is in frictional engagement with stator. The latter has at least two revolving-and-locking piezoelectric units and locking one which are mounted within frame in tandem in longitudinal plane or in transversal plane. Revolving-and-locking piezoelectric unit has revolving and locking piezoids, insulators, and frictional member; locking unit has locking piezoid, insulators, and frictional member. Piezoelectric units are sector-shaped when arranged in transversal plane. EFFECT: simplified design, facilitated manufacture, enhanced positioning force and precision. 4 cl, 10 dwg