Patent ID: 9712085
Date: 2017-07-18
CPC Classifications: H02N

Claim:
1. An actuation device for setting into motion an element to be driven, comprising: a drive element able to be put into contact with the element to be driven; and an actuation element comprising a fixed portion and a driving portion for the drive element; wherein the fixed portion includes a crawling surface, the driving portion includes a flexible moveable blade with a given width positioned in parallel and at a distance from the crawling surface, the moveable blade having a free end and an end connected to the drive element; wherein the moveable blade has a length which is selected so that, when a power supply voltage is applied between the moveable blade and the crawling surface, the free end will come into contact with the crawling surface and a contact area, between the moveable blade and the crawling surface, longitudinally delimited relatively to the moveable blade by the free end of the moveable blade and a crawling front, increases by propagation of the crawling front along the moveable blade, the propagation of the crawling front moving the moveable blade according to a first orientation, thus driving the drive element.