Closure device with a flexible screen

  • US 6,119,758 A
  • Filed: 01/03/1997
  • Issued: 09/19/2000
  • Est. Priority Date: 04/29/1994
  • Status: Expired due to Term
First Claim
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1. A closing device comprising a flexible screen (1) having lateral edges (2) guided in guide channels (3) to permit the screen (1) to be moveable between a closed position and an open position, wherein said edges (2) are substantially incompressible in a direction of movement of the screen towards the closed position in a longitudinal direction of said edges, and driving means for applying a thrust force on the lateral edges (2) in the longitudinal direction of the edges when in the guide channels (3) to move the screen towards the closed position;

  • wherein the screen (1) is provided, at the lateral edges (2), with a series of separate substantially rigid link members which are incompressible along the longitudinal direction of the lateral edges (2), the rigid link members being able to bear against one another, in the longitudinal direction of the lateral edges (2), and the rigid link members being articulated with respect to each other in order to allow the screen (1) to be moved to an open position;

    wherein the rigid link members surround at least partially the lateral edges (2) of the screen (1), forming a protrusion with respect to a surface of the lateral edges (2) the protrusion being moveably held in the guide channels (3);

    wherein the lateral edges (2) of the screen (1) have a substantially continuous bead (7) around which are fixed the rigid link members; and

    wherein the continuous bead (7) of the lateral edges (2) encloses a hollow pipe (8) containing a fluid.

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