Frameless supplemental window for fenestration
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United States of America Patent
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Nov 9, 2021
Grant Date -
N/A
app pub date -
Nov 7, 2019
filing date -
Jan 7, 2013
priority date (Note) -
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Abstract
A novel and useful frame less supplemental window for fenestration suitable for use with existing windows. The supplemental window, in one embodiment, comprises plastic sheet material with bullnose edging around it. Corner braces add rigidity and strength to corners in several embodiments. An attachment mechanism secured either to the sheet material or the bullnose edge functions to fasten and/or seal the supplemental window to an existing window. The bullnose edging functions to substantially enclose (i.e. trap) a volume of air between the window pane and the plastic sheet material. The supplemental window is configured such that the layer of trapped air is of an optimum thickness within a preferred range of 0.15 to 0.75 inches to maximize thermal insulation properties of the supplemental window.
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