Motion device using shape memory material and method therefor
US6633095B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Mar 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N10/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motion device (100) includes a shape memory transducer (110) having a preset memory state and logically divided into first and second portions (116, 118). A coupled electrical circuit (130) is operable to selectively energize the first portion (116) to create a force that moves the first portion (116) toward its memory state which moves the second portion (118) in a first direction out of its memory state, and to selectively energize the second portion (118) to create a force that moves the second portion (118) towards its memory state which moves the first portion (116) away from its memory state in a second direction different from the first direction. A feedback system (120) is preferably included to provide for precise motion control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.