Patent ID: 6457508
Filing Date: 2002-10-01
Classification: E04F,E06B

Abstract:
A sunshade roll screen comprising:a support adapted to be fixed to a wall; a movable horizontal rod; at least two collapsible arm systems, each including first and second gears positioned to mesh with each other, a first link being connected in a hinged manner to said support at a first end of said first link, and connected to said first gear at a second end of said first link, and a second link being connected in a hinged manner to said movable horizontal rod at a first end of said second link, and connected to said second gear at a second end of said second link; a connecting rod connected in a hinged manner to each of said at least two collapsible arm systems; a roll screen capable of being rolled and unrolled; a support hinge slidably connected to said support; a restraining link having a first end connected in a hinged manner to one of said links and having a second end connected to said support hinge; a trigger provided in said support, extending in a sliding path of said support hinge to engage said support hinge, thereby preventing movement of said support hinge in a direction along said support; and disengagement means for disengaging said triger to allow said support hinge to slide past said trigger; wherein said support, said movable horizontal rod, said at least two collapsible arm systems, and said connecting rod form a framework to which said roll screen is attached, said at least two collapsible arm systems are extendable from and collapsible towards said support, and said roll screen is adapted to unroll and roll respectively in conjunction with an extension and a collapsing of said at least two collapsible arm systems.