A window assembly is disclosed that includes a double-hung window aesthetic with an alternative opening procedure and mechanism. The window assembly may include various hardware systems. The hardware systems may include locking portions to assist in locking sash members to a frame and balance assembly for moving the sash members. The window assembly may be formed of selected materials.

An articulated door system includes one or more door sections; a lifting block associated with a lower door section of the one or more door sections; a frame supporting the one or more door sections and engaging the lifting block; and a lead screw system including a rotatable lead screw that is configured to engage the lifting block and lift the lower door section up and down based on rotation of the lead screw.

The present invention is a door assembly including a rectangular door frame, a bi-fold door pivotally mounted at the top of the rectangular door frame and at least one hydraulic cylinder assembly. The hydraulic cylinder assembly is pivotally secured by a first end to a cylinder support mounted on a back side of the door frame, and by a second lower end to a cylinder support secured to a back surface of a top panel of the bi-fold door. In the door closed position, the longitudinal axis of the cylinder is oriented at an acute angle away from a plane defined by the door pivot axis and the lower pivot axis of the cylinder. A hydraulic control assembly controls movement of the door between an open and closed position.

A latch assembly connected to the drive unit of a bi-fold door for retaining the bi-fold door secure to a building has elongated straps attached to rotatable latch drums mounted on the outer ends of the drive shaft of the drive unit. Lift drums powered by a motor driven gearbox raise and lower the bi-fold door. Latch assemblies having springs attached to the straps maintain tension on the straps during the opening and closing of the bi-fold door.

A panel in an overhead door system having a rigid outer frame with an aperture therethrough dimensioned to receive a plurality of movable, foldable horizontally hinged sub-panels dimensioned to fit within confines of the aperture of such outer frame when closed and a plurality of movable, foldable horizontally hinged sub-panels dimensioned to fit within the confines of the aperture of such outer frame when closed, said sub-panels being an upper sub-panel, a first sub-panel, a second sub-panel and a lower sub-panel, the upper sub-panel coupled along its lower horizontal edge to the top horizontal edge of the first sub-panel, the first sub-panel being coupled along its lower horizontal edge to the top horizontal edge of the second subpanel, and the lower horizontal edge of the second subpanel being coupled to the top horizontal edge of the lower sub-panel and including a pin, roller or track system.

A bi-fold overhead door system including a door frame, an overhead door and a hydraulic cylinder. The frame and the overhead door have corresponding slots formed therein. A top member of the door is pivotally mounted to the door frame. The hydraulic cylinder includes a first cylinder end and a second cylinder end. The first cylinder end is operably attached to the frame. The second cylinder end is operably attached to the overhead door. The hydraulic cylinder is capable of moving the overhead door between a closed configuration and an open configuration. When the door is in the closed configuration, the hydraulic cylinder is substantially recessed within the frame and door slots.

Insulated ceiling access doors have a two-part tongue and slot hinge. The doors are made of two interlock pans that are filled with injected polyurethane foam. The doors vary in length, width and thickness. The doors are mounted in ceiling access door frames. Four-part side and end walls insulation dams are permanently mounted above the door frames for holding back insulation from falling downward within the attic area. The doors have hold-open hardware.