PIEZOELECTRIC DRIVE OF HIGH ECONOMIC EFFICIENCY Russian patent published in 2007 - IPC H01L41/83 

FIELD: piezoelectric drives.

SUBSTANCE: proposed piezoelectric drive characterized in high economic efficiency has housing accommodating thin-walled piezoelectric cylinder, electrodes exciting resonance-tuned bending vibrations, and at least two multilayer cylinders shielded by wear-resistant flexible shells within housing. Multilayer cylinders are assembled by inserting one into other for alternate vibration in convexo-concave manner relative to one another thereby varying cylinder-to-cylinder space filled with material in the form of liquid or air. This material in the form of liquid or air brought to water hammer condition in conjunction with hydraulic ram or supersonic air speed creates superfluidity of material in the form of liquid or air. In addition, proposed device is distinguished by high mechanical endurance at system resonance ensuring superconductivity; the latter and multilayer cylinders jointly provide for minimal voltage requirement for exciting and passing maximal current.

EFFECT: enhanced economic efficiency, ability of handling considerable forces and displacements.

2 cl, 2 dwg