Abstract: A device for generating a fluid flow extending in a longitudinal direction includes: a frame, at least one flange arranged on a transverse face, at least one transversely extending membrane arranged opposite the at least one flange, the at least one membrane having a flange face opposite the at least one flange, and an outer face opposite the flange face, and at least one actuator configured to cause the at least one membrane to move in a reciprocating translational motion, wherein none of the walls are opposite the outer face of the at least one membrane.

Abstract: An electromagnetic machine includes: a frame, a stator arranged to create a magnetic field, a linearly movable portion, and a linearly movable portion. The stator includes at least two stator elements facing one another. The linearly movable portion includes at least two separate rods that are movable along respective drive axes, each rod being arranged at one end of the two stator elements, and at least one magnetic element associated with the at least two rods, the at least one magnetic element being arranged between the two stator elements and being magnetically movable with respect to the at least two stator elements. The linearly movable portion further includes coupling means between the at least one magnetic element and the rods.

Abstract: A solid electrolyte fuel cell comprising an electrode-membrane (5) unit disposed between two bi-polar plates (3) and (4), also comprising at least one electroconductive cross-member (6) arranged between one of the bi-polar plates (4) and the electrode-membrane unit (5) in order to keep the bipolar plates at a distance, wherein the electrode membrane unit (5) is configured in such a way that it can divide the area (10) defined by the bi-polar plates into at least one channel for the passage of a first gas (8) and at least one channel for the passage of a second gas (9). Fuel cell consisting of a cell stack.