Static structures (e.g. – buildings) – Framing to receive door – doorjamb – or window sash
Reexamination Certificate
1999-12-08
2001-02-06
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Framing to receive door, doorjamb, or window sash
C052S208000, C052S204200, C052S202000, C052S204591
Reexamination Certificate
active
06182405
ABSTRACT:
FIELD OF INVENTION
The present invention relates to window frame structure, more particularly, the present invention relates to a sill structure facilitating draining and particularly adapted for use with walls with internal wall cavities.
BACKGROUND OF THE INVENTION
There are many, many different forms and shapes of window frame members generally made by extrusion aluminum or polyvinylchloride (PVC) that are connected together to form the window frame for mounting windows in position in the window opening.
U.S. Pat. No. 5,666,773 issued Sep. 3, 1997 to Librande et al. shows a number of different arrangements of extruded materials and their fabrication to form window frames. This patent discloses a tapered spacer element to mount a frame element on a sloping sill and uses extruded trim members to connect to the frame to trim the window frame to the surrounding wall structure.
BRIEF DESCRIPTION OF THE PRESENT INVENTION
It is an object of the present invention to provide an improved window frame structure particularly an improved sill structure.
It is a further object of the present invention to provide a snap-in seal that may be used particularly with cavity wall to seal the window frame to the wall facing around the periphery of the window.
Broadly, the present invention relates to a window frame comprising a sub-sill having a mounting surface for positioning in a window opening and a sloping surface extending in an acute angle from the side of the sub-sill that faces outward relative to the window opening when the sub-sill is mounted in the window opening. A plurality of discreet spacer elements overlie the sub-sill and are positioned in axially spaced relationship relative to the longitudinal axis of the sub-sill. A main sill has a main mounting surface, cooperating fastening elements on the main surface and is connected to the spacers by a snap type connection. The spacer position the main sill substantially parallel to said mounting surface and the main sill is connected to the sub-sill.
Preferably, said cooperating fastening elements providing the connection between said spacers and said main sill comprise a snap fits between an arm at one end of each of said spacers and a tongue and groove connection between said main sill and a second arm on each of said spacer adjacent an opposite end of said spacer to said one end.
Preferably, said main sill has a axially extending nailing strip projecting downwardly from said main sill and said snap fit between said one arm and said main sill employs an undercut on said nailing strip.
Preferably, said window frame further comprises a compression gasket, said compression gasket in place, said compression gasket having a rib at one end and a deflectable element at its opposite end, a groove in said main seal in which said rib is received when said gasket is mounted on said main sill and an undercut on said main seal into which said deflectable element is snaped over when said gasket is mounted on said main sill.
Preferably, said gasket includes plurality of deformable strips interconnected with said gasket and adapted to contact the facing portion of a wall.
Preferably, the compression gasket includes a flashing member projecting forward therefrom.
The present invention also relates to a wall structure having an air space positioned between a structural wall portion and a facing wall portion, a window opening through the wall. A window frame including a sub-sill having a mounting surface and a sloping support surface extending at an acute angle from said mounting surface is -sill mounted in the window opening and on the main supporting wall with said support surface sloping upward and inward relative to said window opening. A sealing membrane extends in said air space and is positioned against said structural wall portion and passes into the window opening over the sloping face of the sub-sill to provide a seal for said structural wall portion. A plurality of spaced tapered spacer elements are positioned in overlying relationship to the sloped wall and overlying membrane that extends up the sloped wall. Cooperating fastener elements releasable connect each of the spacer members to a main sill member and a connector connects said main sill member to said sub-sill member.
Preferably said main sill member has an axially and downwardly extending nailing flange that passes into said air space and is positioned against said membrane immediately adjacent to said window opening in said air space.
Preferably, said structure further includes a compressible gasket and a releasable connection connecting said compressible seal to said main seal.
Preferably, said compressible gasket includes a flashing projecting outwardly of said wall.
REFERENCES:
patent: 1722172 (1929-07-01), Benson
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patent: 2983001 (1961-05-01), Guldager
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patent: 4237664 (1980-12-01), Wilmes
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patent: 4555882 (1985-12-01), Moffitt et al.
patent: 4945680 (1990-08-01), Giguere
patent: 4967507 (1990-11-01), Visnic et al.
patent: 5212921 (1993-05-01), Unruh
patent: 5325648 (1994-07-01), Menard
patent: 5373671 (1994-12-01), Roth et al.
patent: 5666773 (1997-09-01), Librande et al.
patent: 6098355 (2000-08-01), Li
patent: 3301176 (1984-07-01), None
patent: 26443 (1978-03-01), None
A Phi Dieu Tran
Friedman Carl D.
Marzeu Artistic Aluminum LTD
Rowley C. A.
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