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US 4,328,644 AGranted
Plastic clad window and method of manufacture
AssigneePhilips Industries Inc.
InventorsRoger P. Scott, W. Wayne Kahle
Life of this patent
Estimating the term…
Abstract
A casement type window is composed of a frame and sash which are independently made, each comprising a unitary prefabricated synthetic plastic shell having bonded therein a wooden frame which faces interiorly of the building wherein the window is mounted. Synthetic plastic elements of the frame or sash are accurately associated and brought together under pressure at mitered corner abutment joints which are heat fused to form an integral self supporting member before being united with their wooden frame components.
Claims12
A composite window frame subassembly for supporting a sash in a building opening comprising
- (a) a prefabricated unitary rectangular annular synthetic plastic shell having substantially the same cross section on all sides and including substantially parallel rearwardly extending flange portions defining a continuous rearwardly open channel,
- (b) said plastic shell comprising top, bottom and side portions having miter joints welded together at all corners thereof to form an integral four-sided unit independently of the remainder of said assembly,
- (c) a wooden frame complementary in shape and dimensions to said shell and including a forward portion received with said channel in secured relation with said shell and a rearward portion extending beyond said shell, whereby when said subassembly is installed in a wall, the outer side thereof is clad with protective plastic while the inner side presents substantially only wooden surfaces for finishing,
- (d) said frame forward portion being proportioned to be received within said shell channel by direct relative movement of said frame and shell toward each other,
- (e) said plastic shell including wall and web portions defining a structure of closed hollow cross section including a nose portion proportioned to project forwardly of a wall wherein said frame is mounted and flange portions projecting in spaced parallel relation from said hollow section to define said channel,
- (f) said wooden frame including jamb elements secured together at the corners of said subassembly including a forward edge portion received within said channel, and
- (g) the peripherally inner of said flange portions including a further flange portion extending at right angles thereto and having an integral flexible lip portion extending therefrom in inwardly overlying relation with said inner flange portion in position for sealing engagement by the associated sash.
4 more elements
A composite window sash subassembly for mounting a glass panel in a window frame, comprising
- (a) a prefabricated unitary rectangular annular synthetic plastic shell having substantially the same cross section on all sides and including substantially parallel rearwardly extending flange portions defining a continuous rearwardly open channel,
- (b) said plastic shell comprising top, bottom and side portions having miter joints welded together at all corners thereof to form an integral four-sided unit independently of the remainder of said assembly,
- (c) a wooden frame complementary in shape and dimensions to said shell and including a forward portion received within said channel in secured relation with said shell and a rearward portion extending beyond said shell, whereby when said subassembly is installed in a wall, the outer side thereof is clad with protective plastic while the inner side presents substantially only wooden surfaces for finishing,
- (d) said frame forward portion being proportioned to be received within said shell channel by direct relative movement of said frame and shell toward each other,
- (e) said plastic member including a front wall and peripherally inner and outer rearwardly extending walls defining said channel,
- (f) said wooden elements being of generally L-shape in section providing a nose portion received in said channel and a peripherally inwardly extending flange portion defining with said nose portion a right angled seat for a glass panel, and
- (g) said inner plastic wall overlying the side of said seat on said nose portion.
4 more elements
A method of manufacturing a rectangular annular synthetic plastic shell for a window subassembly which comprises the steps of
- (a) providing four side elements of extruded plastic having the same cross section,
- (b) first gripping in accurate parallel and perpendicular relation opposed pairs of said plastic elements of greater length than desired in the finished shell,
- (c) miter cutting the ends of said elements to accurately predetermined lengths with the ends of opposed said elements accurately aligned with each other,
- (d) inserting heating plate means between adjacent said cut ends of said elements,
- (e) urging said elements towards each other into melting engagement with said heating plate means until said cut ends are substantially softened,
- (f) retracting said elements,
- (g) withdrawing said heating plate means, and
- (h) then immediately again advancing said elements towards each other into maintained pressure engagement of their adjacent softened ends until the softened material thereof has welded together to form the unitary rectangular shell.
5 more elements
The combination of a pair of window frames mounted in side by side relation in a wall opening and each comprising
- (a) a prefabricated unitary rectangular annular synthetic plastic shell having substantially the same cross section on all sides and including substantially parallel rearwardly extending flange portions defining a continuous rearwardly open channel,
- (b) said plastic shell comprising top, bottom and side portions having miter joints welded together at all corners thereof to form an integral four-sided unit independently of the remainder of said assembly,
- (c) a wooden frame complementary in shape and dimensions to said shell and including a forward portion received within said channel in secured relation with said shell and a rearward portion extending beyond said shell, whereby when said subassembly is installed in a wall, the outer side thereof is clad with protective plastic while the inner side presents substantially only wooden surfaces for finishing,
- (d) said frame forward portion being proportioned to be received within said shell channel by direct relative movement of said frame and shell toward each other,
- (e) said plastic shell including wall and web portions defining a structure of closed hollow cross section including a nose portion proportioned to project forwardly of a wall wherein said frame is mounted and flange portions projecting in spaced parallel relation from said hollow section to define said channel,
- (f) said wooden frame including jamb elements secured together at the corners of said subassembly including a forward edge portion received within said channel, and
- (g) said frames being mounted with the adjacent said shells in closely adjacent relation,
- (h) each of said nose portions of said shells having a recess in the outer side thereof,
- (i) the outer edge of said recess including an inwardly facing hook portion, and
- (j) a synthetic plastic mullion cover inserted between said adjacent nose portions,
- (k) said mullion cover including a pair of outwardly facing flanges proportioned to fit within said recesses in locked relation with said hook portions and a pair of outer flange portions proportioned to overlie the outer edges of said nose portions of said adjacent sides of said shells.
8 more elements
A window assembly adapted for mounting in an opening in a building wall and comprising a frame subassembly and sash subassembly having the following charactertistics:
- (a) said frame subassembly comprising a prefabricated unitary rectangular annular synthetic plastic shell having substantially the same cross section on all sides and including substantially parallel rearwardly extending flange portions defining a continuous channel open toward the interior of the wall wherein said subassembly is mounted,
- (b) said plastic shell comprising top, bottom and side portions having miter joints welded together at all corners thereof to form an integral four-sided unit independently of the remainder of said assembly,
- (c) the peripherally inner of said flange portions including a further flange portion extending at right angles thereto peripherally inward of said subassembly and having an integral flexible lip portion extending therefrom in overlying relation with said inner flange portion for sealing engagement by the sash assembly,
- (d) a wooden frame complementary in shape to said shell and including a forward portion received within said channel in secured relation with said shell and a rearward portion adapted to be exposed on the interior side of the wall wherein said subassembly is mounted,
- (e) said frame forward portion being proportioned to be received within said shell channel by direct relative movement of said frame and shell toward each other,
- (f) said sash subassembly also comprising a plastic shell including top, bottom and side rearwardly extending flange portions defining a continuous rearwardly open channel and having miter joints at all corners thereof welded together to form an integral four-sided unit independently of the remainder of said subassembly,
- (g) a wooden frame complementary in shape to said sash shell and of generally L-shape in section providing a forward nose portion received in said sash shell channel and a rearward portion adapted to be exposed on the interior of the wall wherein said window assembly is mounted and including a peripherally inwardly extending flange portion defining with said nose portion a right angled seat for a glass panel,
- (h) said sash frame nose portion being proportioned to be received within said sash shell channel by direct relative movement of said frame and shell toward each other, and
- (i) a glass panel received on said seat in adhesively bonded relation therewith.
6 more elements
Dependencies are inferred from the claim text.