Actuator

Details Actuator Actuator

1989-06-19

1991-01-08

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, 310316, 310328, 901 14, H01L 4108

Patent

active

049838750

ABSTRACT:
An actuator suitable for use in a joint device for driving a robot arm or in a subject follow-up device in a video camera, etc., is designed to have a mobility of a freedom of two degrees or more and is adapted to drive a movable part directly using first piezoelectric motor elements each of which consists of piezoelectric elements having a non-ring-like configuration and an elastic body and second piezoelectric motor elements each of which consists of at most one ring-like piezoelectric element and an elastic member. The actuator exhibits a simplified structure, is small and lightweight, provides a powerful driving power and has a wide range of mobility.

REFERENCES:
patent: 3899728 (1975-08-01), Hoppe
patent: 4727278 (1988-02-01), Staufenberg, Jr. et al.

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