Piezo-electric device type actuator
US5289074A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Sep 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/043
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezo-electric device type actuator of the invention is less susceptible to damage in the to joint portions of between a laminated piezo-electric device and a base member or a movable block. The piezo-electric device type actuator includes a laminated piezo-electric device having a plural number of piezo-electric ceramics laminated to a predetermined length; a stationary base member; a pair of resilient plates extended along opposite lateral side surfaces of the laminated piezo-electric device, respectively, with each plate welded at one end to the base member; and a movable block welded to the other end of each of the resilient plates while applying a predetermined compressive force to the laminated piezo-electric device. The laminated piezo-electric device is fixed to the base member and movable block by welding to provide bondage of high reliability between these parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.