Rotating piezoelectric motor with radial preload
US11183952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2019 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Feb 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotating piezoelectric motor including a piezoelectric actuator including a resonator having a pair of arms connected at one of their ends in a connection area, the other two ends being referred to as ‘free’, a passive element including a cylindrical part extending orthogonally to the resonator, the cylindrical part being able to be rotated by the friction of the free ends of the arms on the cylindrical part, each free end including a protuberance such that the protuberances extend towards one another and together form a housing for a portion of the cylindrical part, the motor including a device for holding the portion of the cylindrical part inside the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.