Double or single hung window unit having plastic frame members with windload resistance
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United States of America Patent
Stats
-
Dec 7, 2004
Grant Date -
Jul 22, 2004
app pub date -
Jan 21, 2003
filing date -
Jan 21, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A double or single hung window assembly includes a rectangular main frame formed by a pair of vertical jamb members rigidly connected by a horizontal sill member and a horizontal head member, and each of the members comprises an extrusion of rigid plastics material. The frame members have outer walls for the rough window opening and laterally spaced inner sloping walls, and the inner and outer walls mate at mitered welded corner joints. The jamb members also have inner channel walls for receiving sliding hardware for at least one sash frame formed of extrusions of rigid plastics material. The inner sloping wall of the sill member has an upwardly projecting integral rib which cooperates with a downwardly projecting stop member or rib on the bottom of the sash frame to limit deflection of the sash frame under high negative windloads.
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