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US 4,831,804 AGranted
Window frame apparatus
AssigneeThermal Profiles, Inc.
InventorBertram Sayer
Life of this patent
Estimating the term…
Abstract
A window frame apparatus includes flat metal inserts which are inserted into hollow plastic members which form a frame. The metal inserts are disposed so that the direction of maximum resistance to bending opposes the direction of wind loading, thereby providing a light-weight yet relatively stiff apparatus.
Claims17
A window frame apparatus comprising
- window pane means with said window pane means having a plurality of edges,
- a plurality of elongated members with said elongated members comprising wall portions forming a hollow portion, with said elongate members further comprising window pane mounting means for mounting said edges of said window pane means on said elongated members,
- a plurality of flat solid metal stiffener means with said stiffener means inserted respectively in said elongated members, and
- corner connection means for connecting the adjacent elongated members to form a frame for said window pane means.
1 more element
A window frame apparatus comprising a pair of stiles and a pair of rails with said stiles and rails removably connected to define a window sash frame;
- said stile and said rail members having substantially the same cross-sectional configuration throughout their longitudinal extent respectively;
- said stile and said rail members each having a pair of generally parallel side walls, a first of said side walls being of greater height than a second of said side walls with a selected portion of said second side wall having a relatively greater thickness than the remaining portion of said second side wall;
- said stile and said rail members having a second transverse wall spaced apart from and generally parallel to said first transverse wall;
- said first and second side walls and said first and second transverse walls cooperating to form a hollow chamber;
- a projecting rib formed on said first side wall and projecting into said hollow portion;
- said projecting rib and said selected portion of said second side wall cooperating to define a partially enclosed chamber within said hollow portion;
- and
- flat metal stiffener means removably inserted into said partially enclosed chamber.
5 more elements
Dependencies are inferred from the claim text.