Actuation device with a drive element actuated by crawling
US9712085B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 26, 2013 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Dec 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N1/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuation device (1) which includes an actuation element (3) with a fixed 10 portion (31) and a driving portion (32); wherein the fixed portion (31) includes a crawling surface (311). The driving portion (32) includes a flexible moveable blade (321) positioned in parallel and at a distance from the crawling surface (311). When a power supply voltage is applied between the moveable blade (321) and the crawling surface (311), the free end (3211) comes into contact with the crawling surface (311), and a contact area, between the moveable blade (321) and the crawling surface (311), increases by propagation of the crawling front (3213) along the moveable blade (321). The propagation of the crawling front displaces the moveable blade (321) according to a first orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.