Microscale driving unit and recording disk drive
US7501740B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Oct 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microscale driving unit includes first and second elongated piezoelectric actuators extending in antiparallel directions. The base ends of the actuators are fixed to a support member. The tip ends of the actuators are fixed to a driven member. First and second electrically conductive members connect the base end of the first or second elongated piezoelectric actuator to the tip end of the second or first elongated piezoelectric actuator. The microscale driving unit allows utilization of a common single wiring pattern connected to both the base end of the first elongated piezoelectric actuator and the tip end of the second elongated piezoelectric actuator when a driving current is supplied to the first and second elongated piezoelectric actuators. Only a smaller area should be required to locate the wiring pattern. A sufficient planar space can be obtained on the surface of the support member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.