Torsional mode ultrasonic vibrator

Details Torsional mode ultrasonic vibrator Torsional mode ultrasonic vibrator

1985-01-04

1987-05-05

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310323, 310328, H01L 4108

Patent

active

046635564

ABSTRACT:
A torsional mode ultrasonic vibrator is formed by integrally combining a piezoelectric thickness vibrating element and a cylindrical torsional mode resonator. Furthermore, a torsional mode piezoelectric motor is provided in such a manner that a rotor and a stator are pressed to each other so that a rotational torque can be generated by the vibration at the contacting surfaces therebetween and a piezoelectric thickness vibrator and a torsional mode ultrasonic vibrator formed by an integral combination of a torsion coupler and a torsional mode ultrasonic resonator are used as the source of the ultrasonic vibration.

REFERENCES:
patent: 3171696 (1965-03-01), Houghton
patent: 4019073 (1977-04-01), Vishnevsky
patent: 4210837 (1980-07-01), Vasilieu et al.
patent: 4325264 (1982-04-01), Sashida
patent: 4495432 (1985-01-01), Katsuma

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