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Multi-glazed window

  • US 3,994,109 A
  • Filed: 12/02/1975
  • Issued: 11/30/1976
  • Est. Priority Date: 12/06/1974
  • Status: Expired due to Term
First Claim
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1. A multi-glazed window having at least two window panes and a spacer frame between said panes, said frame comprising rigid, hollow space rails of substantially closed, rectangular cross-section having their corners mitre cut, and angular connecting members having legs inserted in the ends of the spacer rails for joining said corners of said rails edge against edge, said connecting members being completely solid or closed and at least a portion of their legs having a cross-section which fits tightly in the inner cross-section of said spacer rails, and each connecting member having an inclined surface defining with the spacer frame an outer closed corner chamber, there being a hole in the spacer frame connecting said chamber to the outer atmosphere for the injection of a sealing and/or glueing substance.

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