Abstract: A casement window assembly includes a rectangular sash frame enclosing an insulated glass panel unit and supported for swinging movement by a surrounding main window support frame. At least one set of interfitting and interlocking members are positioned in opposing relation on adjacent vertical members of the sash frame and support frame and have hook portions positioned to pass each other when the sash frame is pivoted between a closed position and an open position. The hook portions are effective to engage and hook each other in response to a substantial positive or negative windload or such windload applied after an impact breaks the glass to limit deflection and prevent permanent deformation of the sash frame. The hook portions also produce a snubbing action for compressing a flexible seal between the sash frame and support frame.

Abstract: A single or double hung window assembly has a rectangular main frame supporting at least one rectangular sash frame for vertical sliding movement, and each frame has members formed from extrusions including rigid plastics material. A horizontal upper sash rail or member is reinforced by an elongated and continuous metal stiffening channel having a width substantially greater than its height and defining a longitudinally extending and upwardly facing undercut cavity. End portions of the stiffening channel support retractable sliding tilt latch bolts each having a snap-fit connection to a corresponding actuator slidably mounted on the upper sash rail. A sash lock member is also mounted on the upper sash rail and is secured to the stiffening channel. A pre-assembly of the stiffening channel and latch bolts is inserted through an opening in a vertical sash frame member, and stiffening channels are also inserted into other sash frame members.

Abstract: A window assembly includes a main outer support frame supporting at least one movable rectangular sash frame enclosing an insulated glass panel. The sash frame is supported for vertical or horizontal movement between open and closed positions, and an interlocking system is effective to lock adjacent overlapping sash frame members. The interlocking system includes an angular metal clip member mounted on one sash frame member and having a flange projecting into a slot within the adjacent sash frame member. A pair of clip members are located under the tilt latches on single and double hung window assemblies and are secured to a vertical sash frame member on a horizontal sliding window assembly. The interlocking system responds to a substantial positive or negative wind load or such a wind load after an impact which breaks a glass panel, to limit deflection and prevent permanent deformation or release of the movable sash frame.

Abstract: A sliding window assembly includes two rectangular sash frames each enclosing an insulated glass panel unit and supported by a surrounding main support frame. At least one of the sash frames is supported for horizontal movement, and horizontally extending interlocking members are formed on the adjacent upper and lower horizontal frame members of the sash frame and main support frame. The interlocking members have interfitting horizontal hook portions positioned to permit each movable sash frame to move freely between a closed position and an open position. The interfitting hook portions are effective to engage and interlock each other in response to a substantial positive or negative windload or such a windload after an impact which breaks the glass panel unit, to limit deflection and prevent permanent deformation or release of the sash frame.

Abstract: A rectangular outer sash frame has extruded plastic frame members with inwardly projecting flange portions overlapping a peripheral edge portion of an outer glass panel of an insulated glass unit. A removable inner sub-sash frame interconnects with the outer sash frame and has extruded plastic frame members with inwardly projecting flange portions overlapping and bonded to a peripheral edge portion of at least one of the glass panels. Extruded plastic glazing members have flange portions overlapping a peripheral edge portion of the inner glass panel and include retaining flange portions projecting between the outer sash frame and the inner sub-sash frame. In another embodiment, the sub-sash frame has integrally extruded parallel spaced walls projecting inwardly between and bonded to the peripheral edge portions of both the inner and outer glass panels.

Abstract: A deck plank is co-extruded from an extrusion die which receives molten plastics materials supplied from three separate plastic extruders to provide the plank with opposite sides having different colors. Preferably, the base plank is extruded from a lower cost material such as reground scrap polyvinylchloride (PVC), and thin PVC cap layers are co-extruded on opposite sides of the base plank in different colors. Opposite edges of each plank have longitudinally extending grooves for receiving hidden fasteners in the form of screws extending through short flat tie pieces or a continuous sealing tie strip projecting into the opposing grooves of adjacent planks.