LINEAR PIEZOELECTRIC MOTOR Russian patent published in 2017 - IPC H02N2/02 

FIELD: engines and pumps.

SUBSTANCE: inside the motor containing a stationary housing, driven member in bearing assemblies, piezoelectric elements with levers (LPE) of forward and backward motion, piezoelement power supply additionally inside the stationary housing a travelling housing is coaxially installed and connected to the stationary housing by elastic elements. There are two LPEs of forward motion and two LPEs of backward motion of the driven member rigidly attached to the travelling housing. The LPEs of the same motion are placed oppositely around the driven member. The piezoelement power supply has one output for feeding piezoelements of forward motion and one output for feeding piezoelements of backward motion. One of the two LPEs for each direction of the driven member is connected to the power supply through a phase shifter.

EFFECT: increased efficiency, decreased overall dimensions, possibility of backward motion, increased specific capacity, resource and structural reliability due to the balance of the structure and friction mode of torque transfer to the driven member.

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