Patent ID: 8120846

Claim:
A projection screen comprising: a projection surface of generally rectangular shape, having top and bottom longitudinal edges that are substantially horizontal and further having two lateral edges, said surface being suitable for being tensioned and extending at least in part in a plane that is substantially vertical, at least in a utilization position; support means for supporting the projection surface in a suspended state in said at least one utilization position, said support means being connected to the top longitudinal edge of the projection surface; first means for exerting vertical traction forces on the projection surface, said first means comprising at least weighting means fastened to or in the vicinity of the bottom longitudinal edge of the projection surface; and means for exerting horizontal fraction forces on the projection surface, said means for exerting comprising at least second weighting means and two deformable elongate elements, each deformable elongate element being connected at, or in vicinity of, its top end to said support means and at, or in vicinity of, its bottom end to said second weighting means and being further connected to a corresponding one of the lateral edges of the projection surface, each deformable elongate element being arranged to apply a load of said associated second weighting means in form of the horizontal traction forces to the corresponding lateral edge, wherein said second weighting means and said first weighting means are distinct and are mounted to exert independent weighting actions in at said utilization position, and wherein the first weighting means and the second weighting means are mutually positioned such that the first and the second weighting means are independent from one another when the projection surface is in the utilization position, and the first weighting means cause upward movement of the second weighting means when the projection surface is retracted upward.