Abstract: The invention relates to a shutter device intended to close an opening, the shutter (1) being able to be moved downwards and upwards between an open position and a closed position, this shutter (1) having flexible or articulated roughly continuous lateral edges (8, 9) running with respect to guideways (10, 11) mounted on fixed supports (12) on each side of the opening, means being provided to allow a passage to be created between the guideways (10, 11) that is wider than the distance between the lateral edges (8, 9) of the shutter (1) when the latter is in the open position.

Abstract: According to the invention, the lateral edges of the screen are substantially incompressible or rendered incompressible in their lengthwise direction. A driving device is provided making it possible to apply a thrust force to these edges in the longitudinal direction of the edges in their guide channels in order to move the screen towards its closed position and towards its open position. The screen is provided, near or on the lateral edges mentioned above, with a series of members which are substantially rigid in the longitudinal direction of these edges. These members are able to bear against one another in the direction of the lateral edges, and are preferably able to be articulated with respect to each other such as to allow the rolling up or flexion of the screen in its open position.

Abstract: Closing, separating or covering device comprising a blind (1) capable of being wound about a winding axis with flexible lateral edges (2) held in position in guide tracks (3) during winding and unwinding, wherein the latter (3) are elastically mounted on a support or rotatably mounted about an axis substantially parallel to their longitudinal axis such that the said lateral edges (2) can be held in position in the guide tracks during the displacement by rotation and/or translation of the latter in relation to the support (4).