Piezoelectric motor structures

Details Piezoelectric motor structures Piezoelectric motor structures

1975-08-12

1977-04-19

Budd, Mark O.

Electrical generator or motor structure

Educational or construction units or kits

310 85, 310 86, H01L 4104

Patent

active

040190730

ABSTRACT:
A piezoelectric motor, bases on utilization of the reverse piezoelectric effect for continuous conversion of electric power into mechanical energy of rotation of the rotor. The piezoelectric motor includes a rotor and a stator, at least one of them incorporating a vibrator of mechanical oscillation, having a piezoelectric device connected to a voltage source and converting electric power into mechanical vibrations. The piezoelectric motor contains no windings and provides considerable driving torques, owing to the stator and rotor being urged against each other. The structure of the piezoelectric motor is determined by the arrangement of the piezoelectric device in the rotor and stator, the type of oscillation being excited, the shape of the piezoelectric device, the arrangement of its electrodes, their shape and electrical connection, as well as by the polarization of the piezoelectric material. Various combinations of these features offer a great variety of structures and designs of the piezoelectric motors, the piezoelectric motor being supplied from a voltage source with supersonic frequency.

REFERENCES:
patent: 3176167 (1965-03-01), Vossler
patent: 3192415 (1965-06-01), Duff et al.
patent: 3204133 (1965-08-01), Tschudin
patent: 3211931 (1965-10-01), Tehon
patent: 3225226 (1965-12-01), Kawakami
patent: 3297889 (1967-01-01), Breskend
patent: 3343010 (1967-09-01), Snaper

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