The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 1995
Filed:
Jan. 19, 1994
Wayne S Simonton, Parkersburg, WV (US);
SLI, Inc., Wilmington, DE (US);
Abstract
A window assembly includes standard-sized sashes with lock and keeper rails that overlap and interlock such that adjacent sides of the rails are held in close proximity when the assembly is closed. The lock rail includes an exterior wall with an exterior edge that protrudes slightly. The keeper rail includes an interior wall with a first side, a substantially parallel second side and a top edge that extends between the two sides. The top edge includes an integral trough for receiving the protruding edge of the lock rail. When the assembly is closed, the protruding edge overlaps and interconnects with the keeper rail, such that the edge sits in the trough. The exterior wall of the lock rail is thus held in close proximity to the second side of the interior wall of the keeper rail and air flow between the rails is minimized. The rails preferably support strategically placed upper and lower gaskets, which are hidden from view when the assembly is closed. The keeper rail supports the lower gasket, which blocks air flow between the lower sections of the rails and provides a first layer of protection against air infiltration from the exterior of the structure. The lock rail supports the upper gasket and positions it directly below the protruding edge. The free end of this upper gasket rests against an upper edge of the keeper rail, and thus, against an edge of the trough, to further reduce air infiltration.