Piezoelectric motor

H - Electricity – 01 – L

Patent

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H01L 41/08 (2006.01) H01L 41/09 (2006.01)

Patent

CA 1190953

PIEZOELECTRIC MOTOR Abstract of the Disclosure The proposed motor comprises a stator and a rotor frictionally interacting with said stator, one of said stator and rotor including at least one piezoelectric oscillator. Said oscillator includes a piezoelectric ele- ment and electrodes located on the opposite surfaces of the piezoelectric element and connected to a supply source for exciting in this oscillator a resonant mode of lon- gitudinal acoustic vibrations. The motor further includes at least two pushers each having one end secured on said oscillator and the other end urged against a surface of frictional interaction of the rotor and stator. The piezo- electric element used in this motor is polarized in the di- rection perpendicular to the surfaces of the electrodes and is positioned so that the propagation direction of the re- sonant mode of the longitudinal vibrations is perpendicular to the surface of frictional interaction.

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