Closure device with a screen presenting flexible side edges

Device for closing a doorway or other opening (1) comprising a screen (2) presenting flexible side edges (4) with an overthickness (4′) extending in the longitudinal direction of the side edges (4),

• this overthickness (4′) being guided by guide channels (5) thus enabling the screen (2) to be moved between a closed position and an open position,
• whereby the screen (2) is equipped with at least one cable (21), substantially incompressible in its lengthwise direction, extending substantially parallel to the side edges of the screen (2) so as to enable the application of a thrust force on these side edges (4) in their longitudinal direction to move the screen from its open position to its closed position,
• whereby further the side edges (4) have a neutral surface, being a plane in which neither compression, nor any elongation takes place along the longitudinal direction of the edge when applying bending forces to the edge,
• the neutral surface (24) of said side edges (4) formed on bending of the cable (21) being located in this cable (21), the latter being fixed with respect to the screen (2), near each of the side edges (4) of this screen in an unremovable way preventing any movement with respect to the screen (2);
• wherein the cable or cables (21) are incorporated in a strip (8) made of a substantially elastic material on the neutral surface (24) formed on bending of the strip (8);
• and
• wherein said overthickness (4′) comprises notched belts (9, 10) presenting a series of teeth (11, 12) and extending on either side of the plane of the screen (2) in the longitudinal direction of the side edges (4), the strip (8) being incorporated between said notched belts (9, 10).

Device for closing a doorway or other opening (1) comprising a screen (2) presenting flexible side edges (4) with an overthickness (4′) extending in the longitudinal direction of the side edges (4),

• this overthickness (4′) being guided by guide channels (5) thus enabling the screen (2) to be moved between a closed position and an open position,
• whereby the screen (2) is equipped with at least one cable (21), substantially incompressible in its lengthwise direction, extending substantially parallel to the side edges of the screen (2) so as to enable the application of a thrust force on these side edges (4) in their longitudinal direction to move the screen from its open position to its closed position,
• whereby further the side edges (4) have a neutral surface, being a plane in which neither compression, nor any elongation takes place along the longitudinal direction of the edge when applying bending forces to the edge,
• the neutral surface (24) of said side edges (4) formed on bending of the cable (21) being located in this cable (21), the latter being fixed with respect to the screen (2), near each of the side edges (4) of this screen in an unremovable way preventing any movement with respect to the screen (2);
• and
• wherein said overthickness (4′) comprises notched belts (9, 10) presenting a series of teeth (11, 12) and extending on either side of the plane of the screen (2) in the longitudinal direction of the side edges (4), said at least one cable (21) being incorporated between said notched belts (9, 10).