Piezoelectric actuator
US6411010B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | May 11, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric actuator has a base and a movable body disposed over a surface of the base for undergoing movement relative thereto. The movable body has a frame and at least one cantilever having a first end integrally connected to the frame and a second free end. A piezoelectric element is disposed on the cantilever for undergoing expansion and contraction movement in response to application of an alternating voltage to bring the second free end of the cantilever into and out of contact with the surface of the base to thereby move the movable body relative to the surface of the base. Spring members are connected to the frame of the movable body for regulating a direction of movement of the movable body relative to the surface of the base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.