Abstract: This security system will prevent the door casing from failing upon a forced entry attempt into a home by forming a rigid connection from the door casing with said security system to the wall interior structure. It will enable the wall interior structure to become the strength of the door and not the door casing.

Abstract: A ventilation stop for limiting the length of movement of a slidable door or window sash. The ventilation stop is located in a fixed element of a window or door assembly, preferably in an interior glazing stop of a fixed sash adjacent to the slidable sash. The stop includes a recess in the glazing stop, a tab disposed in and protruding from the recess, and a hinge pin disposed in friction fit through a bore in the tab and extending into the glazing stop beyond the recess, preferably in both directions from the tab. The axes of the bore and the pin are parallel to the direction of movement of the slidable sash, permitting the tab to be turned into an interfering relationship with the slidable sash, thereby limiting the length of movement of the sash, or to be turned out of interference, thereby permitting unrestricted movement of the sash. Preferably the glazing stop is hollow, allowing for easy insertion of the pin into the tab from within the glazing stop during assembly of a window or door unit.

Abstract: A latch having a base and a latch plate pivoted thereto, the base being adapted for installation on a closure frame and the latch plate being adapted to overlie the closure. The latch plate is pivotally mounted on the base to swing between an unlatched position in which the closure can be opened, and a latched position in which the closure cannot be opened because the latch plate overlies it. A handle pivotally mounted on the base swings the latch plate between the open and closed positions. At least one of the base and latch plate are made of an elastically deformable material. The latch plate is moved to the latching position by the camming action of the handle; and when the latch plate has moved only part way toward the fully latched position, abutment surfaces on the base and latch plate come into contact with each other.

Abstract: A lock system for a desk drawer, a cabinet door or the like includes a hinge consisting of a first supporting hinge plate, a second locking hinge plate and a joint rotatably connecting said first and second hinge plates. The hinge, when locked, has a substantially planar configuration and an unlocked configuration in which the second hinge plate is substantially perpendicular to the first hinge plate. The hinge is positioned at the opposed, adjacent interior edges of a first door panel of a cabinet, desk drawer or the like and a second door panel of an adjacent cabinet, desk drawer or the like with the first supporting hinge plate being rigidly attached to the interior surface of the first door panel adjacent to the second door panel.

Abstract: A ventilation stop mounted on a side rail of the upper sash of a double-hung window, capable of being swung into and out of the path of the upper horizontal rail of the lower sash to permit only limited relative opening movement of the upper and lower sashes.

Abstract: A ventilation stop mounted on a side rail of the upper sash of a double-hung window, capable of being swung into and out of the path of the upper horizontal rail of the lower sash to permit only limited relative opening movement of the upper and lower sashes.

Abstract: A latch for sliding doors, having a first plate fixed to the heel of one of the doors and a second plate hingedly attached to the end of the second plate. When the plates are folded together, they are parallel. When the plates are folded at right angles to each other, a screw threaded into the second plate engages a recess in the other door, preventing the doors from sliding relative to each other.

Abstract: A lock for a sliding door comprising a base member fixedly secured to an outer surface of a sliding door guide channel with a leaf member pivotly connected to the base member. The leaf member is pivotable from a position where it is substantially an extention of the base member and the door is freely slidable to a second position substantially perpendicular to the base member and the door is obstructed from movement from a closed to an open position. A translatable locking means carried by the base members is provided to prevent the leaf member from movement from its second position to its first position. An additional stop member is provided for attachment to the door when the door is positioned remote from its outer channel member for engagement with the leaf member when the leaf member is in its second position.