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Corner key for window spacer element

  • US 4,513,546 A
  • Filed: 03/12/1980
  • Issued: 04/30/1985
  • Est. Priority Date: 03/12/1980
  • Status: Expired due to Term
First Claim
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1. A corner key means for use with hollow elongated spacer elements and a hot melt sealant to form a frame adapted to be used in the assembly of sheets of glass to form a thermal pane, each key comprising an enlarged body member of fixed length having a bottom and oppositely disposed side walls, a V-shaped notch extending from one side to the other through the body, said notch being positioned about midway of the length of said key with a line connecting the bottom of the V on each side wall lying over the bottom wall of said body member, leg members of a size slightly smaller than said body member integral with said body member, said slightly smaller sized leg members each extending outwardly from the opposite ends of the body and having a crossectional shape to telescopically interfit in the ends of the hollow elongated spacer elements, and a layer of hot melt sealant applied to at least two of the side walls of said key and the spacer elements with which it is assembled, whereby when a plurality of said key means and spacer elements are assembled and coated with sealant, the assembly can then be bent on each of said lines across the bottom of said body members to close said V slots to produce a closed frame with a ring of sealant on at least two sides thereof for assembly with sheets of glass to be sealed thereto to form a thermal pane.

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