A door safety barricade capable of preventing an intruder from entering through a door in a classroom, a school, an office building, and the like, when the device is in an engaged, locked position and wherein the selected authorities will be automatically notified as the locking device passes by the sensor while being engaged.

A covering (200) for an opening in a building and a sensor assembly (500) is disclosed. The covering (200) comprises a panel (201) moveable between an open position and a closed position, and to an intermediate position between the open position and the closed position. The sensor assembly (500) is configured to sense the position of a locking member (205) of the covering and to transmit signals indicating the position of locking member (205). Methods of installing a sensor assembly (500) on a covering (200) of an opening of a building are also disclosed.

A low profile actuating window lock for casement windows having a longitudinal slot in a sidewall of the casing for the lock, wherein a fork component translates within the slot in a direction perpendicular to an axis of rotation of the handle and the handle rotates along a plane perpendicular to the fork component, the handle pivotable about a restrictor arm that pivots relative to the casing, allowing the handle to rotate fully from the locked position to the unlocked position with low clearance from the window frame. The pivot points of the handle and restrictor arm configuration allow for an over center linkage that prevents back driving the casement window lock.

A retention bracket configured for use with a latch mechanism including a laterally extending housing. The retention bracket includes a first wall, a second wall, a collar, and a deformable section. The first and second walls are longitudinally offset from one another and are structured to receive the housing therebetween. The collar extends longitudinally outward from one of the walls and defines an opening having an effective diameter. The deformable section has a natural state in which the effective diameter is a first diameter, and a deformed state in which the effective diameter is a second diameter greater than the first diameter.

A telescoping door security bar for preventing intruders from entering a room. The telescoping door security bar uses a bolt and cotter pin, which are inserted completely through the door security bar to make it more stable.

A locking device for a barn door mounted in the wall adjacent a side edge of the door when in the closed position. The lock includes an outer cylinder that passes through the wall. The ends of the outer cylinder are mounted to each side of the wall. An inner cylinder is provided that is axially and slidably disposed within the outer cylinder and has a length greater than the length of the outer cylinder. When so positioned, one end of the inner cylinder can extend from the surface of the wall to prevent the barn from sliding to an open position by contacting the side edge of the barn door. When slid in the opposite direction the inner cylinder disengages from contacting the side edge of the barn door to enable the barn door to slide to the open position. Optionally, a locking mechanism is provided to lock the barn door in the closed position.

The door stopper is adhered to the front wing of the door that has been completely opened and the door is prevented to move from this point on. When the door is desired to be closed, the door is pulled gently by hand, the force applied by the door to the stopper tensions the pressure spring and the pressure spring forces the moveable head down to the floor, thereby enabling the door to pass over the stopper.

The door stopper is adhered to the front wing of the door that has been completely opened and the door is prevented to move from this point on. When the door is desired to be closed, the door is pulled gently by hand, the force applied by the door to the stopper tensions the pressure spring and the pressure spring forces the moveable head down to the floor, thereby enabling the door to pass over the stopper.

A low profile actuating window lock for casement windows having a longitudinal slot in a sidewall of the casing for the lock, wherein an actuator including a fork component translates within the slot in a direction opposite movement of the handle, the handle pivotable about a restrictor arm that pivots relative to the casing, allowing the handle to rotate from the locked position to the unlocked position with low clearance from the window frame. The pivot points of the handle and restrictor arm configuration allow for an over center linkage that prevents back driving the casement window lock.

A low profile actuating window lock for casement windows having a longitudinal slot in a sidewall of the casing for the lock, wherein an actuator including a fork component translates within the slot in a direction opposite movement of the handle, the handle pivotable about a restrictor arm that pivots relative to the casing, allowing the handle to rotate from the locked position to the unlocked position with low clearance from the window frame. The pivot points of the handle and restrictor arm configuration allow for an over center linkage that prevents back driving the casement window lock.