Patent ID: 8307602
Filing Date: 2012-11-13
Classification: E06B

Abstract:
1. An energy saving window cover system for controlling impinging sunlight on a windowpane mounted in a window sash in a surrounding structure at an angle determined by the position of the sun with respect to the horizon, the cover system comprising: a frame mounted exterior to said window sash of said windowpane; a grate removably mounted within said frame exterior to and substantially parallel with said windowpane, said grate comprising vertical and horizontal walls intersecting one another so to form a plurality of contiguous cells in a single plane, each cell having cell wall surfaces, wherein said cell wall surfaces are working surfaces which absorb, reflect, or diffuse impinging sunlight, said contiguous cells having a depth; wherein the horizontal and vertical walls of the grate are oriented at an angle with respect to the position of the sun to form a functional angle in which direct rays from the sun entering said grate reach said depth of said grate but not beyond said depth of said grate; said grate at said functional angle or greater passes indirect light and diffused light through said window pane; said grate at less than said functional angle passes direct sunlight, indirect light, and diffused light; said grate is formed as a single, integral structure, said integral structure configured to maintain a shape while resisting wind, said grate capable of being installed in combination with other grates of the same makeup to form a grate of a different size or depth, said grate capable of transferring absorbed heat to adjacent surroundings; said contiguous cells of said grate form a grate with open areas which provides a viewing area through said grate and said windowpane; said grate cell depth, said cell wall surfaces, and said position of the sun with respect to said grate enable the window cover system to provide a shadow pattern and to absorb, diffuse, or reflect infrared radiation, reducing the amount of infrared heating entering through said windowpane.