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Filament-strung stand-off elements for maintaining pane separation in vacuum insulating glazing units

United States Patent

August 20, 2013
View the Complete Patent at the US Patent & Trademark Office
A vacuum insulating glazing unit (VIGU) comprises first and second panes of transparent material, first and second anchors, a plurality of filaments, a plurality of stand-off elements, and seals. The first and second panes of transparent material have edges and inner and outer faces, are disposed with their inner faces substantially opposing one another, and are separated by a gap having a predetermined height. The first and second anchors are disposed at opposite edges of one pane of the VIGU. Each filament is attached at one end to the first anchor and at the other end to the second anchor, and the filaments are collectively disposed between the panes substantially parallel to one another. The stand-off elements are affixed to each filament at predetermined positions along the filament, and have a height substantially equal to the predetermined height of the gap such that the each stand-off element touches the inner surfaces of both panes. The seals are disposed about the edges of the panes, enclosing the stand-off elements within a volume between the panes from which the atmosphere may be evacuated to form a partial vacuum.
Bettger; Kenneth J. (Pella, IA), Stark; David H. (Evergreen, CO)
Eversealed Windows, Inc. (Evergreen, CO)
12/ 688,853
January 15, 2010
This Invention was made with government support under Contract No. DE-FC26-06NT42765 awarded by the Department of Energy. The Government has certain rights in this invention.