Motorisation device for producing very short displacements

摘要

The present invention relates to a very slow motorisation device which provides for the displacement of a wall limiting a volume. It is comprised of a deformable chamber which can contain a fluid, a medium external to said deformable chamber containing the same fluid, means (5) varying the pressure of said chamber with respect to that of the external medium, at least one long channel (9) whose cross-section is smaller than 1mm<2> and connecting said chamber to said external medium so that the fluid can pass through a laminar charge loss, said operation resulting in the variation of the chamber volume and the displacement of a plate (12) from the walls which limit said plate.