Blow-out prevention mechanism for windows

  • US 6,243,999 B1
  • Filed: 05/04/1999
  • Issued: 06/12/2001
  • Est. Priority Date: 05/04/1999
  • Status: Active Grant
First Claim
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1. A window assembly, comprisinga window frame including a pair of frame side portions connected to a pair of frame end portions;

  • at least one sash having a sash frame including a pair of end rails and a pair of side rails interconnecting said end rails, said at least one sash being movable in a plane within said window frame between a closed position in which one of said end rails is adjacent one of said frame end portions, and an open position in which said one of said end rails is spaced from said one of said frame end portions;

    a first member projecting from said one of said frame end portions toward said one of said end rails, said first member having an inner surface facing in a first direction transverse to said plane;

    a second member projecting from said one of said end rails toward said one of said frame end portions, said second member having an outer surface facing in a second direction opposite said first direction;

    said first and second members being positioned adjacent one another in said closed position of said at least one sash with said inner surface of said first member confronting said outer surface of said second member so as to prevent movement of said at least one sash in said second direction.

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