Patent · US Active

Multistage piezoelectric drive

US7436101B1 · kind B1 · utility

3Cited by

4References

11Claims

0Family size

Assignee

Elliptec Resonant Actuator AG · DE

Inventors

Bjoern Magnussen · Iserlohn, DE
Peter Varadi · Corona, US
Dirk J. van Vinckenroye · Bochum, DE

Key dates

Filing date	Nov 4, 2005
Grant date	Oct 14, 2008
Priority date	—
Expiry date	Nov 27, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH02N2/126
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A piezoelectric motor comprising a vibratory element is configured to move a first driven element by vibrations generated by the vibratory element. A second driven element is brought into frictional contact with the first driven element to form a multistage piezoelectric drive system. Alternatively, a selected contacting portion on a support for the first driven element is provided for drivingly engaging the second driven element. The system is configured to also move the second driven element by vibrations generated by the vibratory element, these vibrations being transmitted from the vibratory element into the first driven element and possibly also into the support for the first driven element. The system is preferably configured to move the first and second driven elements independently from each other using only electric signals that are applied to the same one vibratory element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.