Piezoelectric motor using longitudinal and bending vibration modes
US12143036B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2024 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Apr 3, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric device includes a piezoresonator body and a set of electrodes disposed on the piezoresonator body. The piezoresonator body includes a bulk region and a contact element integral with and protruding from the bulk region, and further includes opposing first and second surfaces. A pair of excitation electrodes are disposed on the first surface. A common electrode is disposed on the second surface. The piezoresonator body is characterized by a longitudinal axis and a transverse axis, and further characterized by a natural resonant frequency (v1) of first-order longitudinal standing vibrations along the transverse axis and a natural resonant frequency (v2) of second-order bending standing vibrations along the longitudinal axis, with v1<v2≤1.1v1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.