Fenestration systems and associated methods include use of a lock assembly having a housing, a cam gear, a reversal gear, and one or more catches. Various aspects relate to enhanced locking/security, including repeatability and overall efficacy.

A safety door lock may include the door handle configured to be rotatable about a rotational axis and to slidably reciprocate in a horizontal direction and having a sliding groove on the side surface thereof adjacent to a door. The safety door lock may include a body combined with an inside of the sliding groove to form a rotating shaft with another door handle provided at the other side of the door and supporting sliding of the door handle so as to protrude the door handle from the front end of the door. The safety door lock may include an elastic unit fixed to the body, and elastically relaxing the door handle and the body. Other embodiments may also be provided.

A sliding latch replaces a prior art door strike plate. The sliding latch has two components, a strike plate and a sliding latch cover reciprocal within the strike plate. A handle protrudes from the sliding latch cover sufficiently to extend beyond a closed door and door frame, to permit the handle to be manually grasped and lifted in a crisis. When the sliding latch cover is thus elevated, it no longer blocks the door bolt, allowing the bolt to extend farther and engage with the strike plate and extend into the door jamb, locking the door. One of the strike plate mounting screw holes is preferably drawn slightly out of the primary plane of the strike plate toward the jamb, and a pair of elevated distally located edges run longitudinally along the strike plate. The drawn screw hole and raised edges guide and limit motion of the sliding latch cover.

A double cylinder deadlock lock arrangement including a deadlock control tab slidably supported within an internal housing block such that a segment of said deadlock control tab is extendible out from a peripheral edge of the internal housing block to allow for a user operable engagement with said deadlock control tab, wherein slidable retraction of the extended segment of said deadlock control tab by a user at least substantially into the internal housing block subsequently permits operable rotation of an internal rotatable operable cylinder and/or the external key cylinder when a key is received within the slot of an external key cylinder to move the arrangement from a deadlock lock unlocked position to a deadlock lock locked position.

A shelter usage alter system includes a wall having an access opening positioned therein. A door is mounted on the wall and is positionable in a closed position or an open position. A locking mechanism is positioned on the door and is actuated from an interior of the shelter for selectively locking the door. The locking mechanism is actuated to a locked position or an unlocked position. A control circuit is operationally coupled to the locking mechanism and the control circuit receives a locked signal when the locking mechanism is in the locked position. A sound emitter is operationally coupled to the control circuit and is positioned outside of the shelter. The sound emitter emits an audible alarm sound when the control circuit receives the locked signal. The sound emitter is positioned adjacent to the shelter.

Fenestration systems and associated methods include use of a lock assembly having a housing, a cam gear, a reversal gear, and one or more catches. Various aspects relate to enhanced locking/security, including repeatability and overall efficacy.

A cockpit internal anti-sabotage system (CIASS) without compromising the cockpit security and the present anti-hijacking procedure and protocol, wherein a single cockpit crew alone in the cockpit cannot deny bonafide entry of other cockpit crew or cabin crew in an attempt to commit suicide or sabotage the aircraft, the system comprises a manual door lock system and an automated door lock system wherein both the systems comprising a mechanical system or a non-mechanical system or combination of both.

A quick release door locking device, comprising: a) a door frame comprising a strike plate, wherein the strike plate comprising a door latch hole aligned with a corresponding door frame hole for receiving a door latch of the door lock when the door is closed; b) a door comprising a door latch capable of engaging with the door latch hole and door frame hole; and c) a door latch cover plate comprising a first side, a second side, a upper end, a lower end, a left side, a right side and a cover plate gate, wherein the cover plate comprises a pivot aperture at a position adjacent to the upper end, wherein the pivot aperture comprises a first cover plate fastener therethrough and pivotally affixed to the door in an adjacent position above the door latch.

An exemplary locking system includes an outer actuator, an outer spindle coupled to the outer actuator, a center spindle coupled to a latch assembly, and a lock control assembly selectively coupling the outer spindle and the center spindle. The lock control assembly is operable in a locked state wherein rotation of the manual actuator is prevented, and an unlocked state wherein the manual actuator is operable to rotate the center spindle. The lock control assembly is configured to transition from the locked state to the unlocked state in response to rotation of the center spindle, for example by an inner actuator.

This invention relates to an apparatus and to a method designed to prevent hand and finger injuries resulting from inadvertent door closures. The apparatus for use with an existing door and door surround includes a door latching mechanism mountable to the door having a reversibly extendable bolt actuated by a turning member, a striker member mountable to the door surround wherein a portion of the striker member projects beyond the door surround, and when the bolt is extended, complete door closure is impeded by the projecting portion of the striker member with a gap width created between the leading edge of the door and the door surround sufficient to protect human hands and fingers from being crushed, injured, or amputated. When the bolt is intentionally retracted complete door closure is permitted. The apparatus is designed to be interchangeable with standard sized door knobs, latching mechanisms, lock assemblies, and striker plates.