A self-closing and resetting latch is disclosed herein. An example apparatus includes a pawl having a protrusion, the pawl coupled to an over-center spring, the over-center spring connected to a frame of a cabin door, and a latch hook having a first recess to receive the protrusion of the pawl and a second recess to receive a latch pin when the cabin door closes.

An over-center spring of a vehicle door latch device has a coil part that is loosely inserted on a spring support shaft, and a base end side spring leg part. A leading end side spring leg part elastically holds an abutting pin and is paired with the base end side spring leg part. A lock lever is provided with a slot through which the spring support shaft passes. The lock lever and the spring support shaft are disposed to be superposed on each other in an axial direction of the spring support shaft.

A lock includes a housing and a lock mechanism with a dead-bolt disposed in the housing, wherein the dead-bolt is retractable and protrudable between its two terminal positions. The lock further includes at least one bending element disposed in the housing connected to a mechanical component of the lock mechanism at a connecting location, wherein the longest extension of the bending element is defined along a first axis. When the dead-bolt retracts and protrudes, the connecting location of the mechanical component moves along a second axis. The first axis is angled with regard to the second axis, such that when the dead-bolt is displaced into at least one terminal position, the bending element elastically bends and the bending element maintains the lock mechanism in the terminal position.

A latch includes a housing that has a first side and a second side. The latch includes a bolt locking assembly that is positioned at least partially within the housing. The bolt locking assembly includes a bolt movable between first and second positions relative to at least one of the first and second sides of the housing. The bolt is positionable to selectively extend from either the first side or the second of the housing. The latch includes a first handing configuration and a second handing configuration, where the first handing configuration corresponds to the first position and the second handing configuration corresponds to the second position. Changing between the first handing configuration and the second handing configuration requires moving the bolt locking assembly to a disengaged position and applying the external force to the bolt to move the bolt between the first and second positions.

A door latch assembly configured to be used in an aircraft lavatory door. The door latch assembly includes a housing that includes a housing interior, a switch member operatively associated with the housing that is rotatable between a first position and a second position, and a locking bolt that is movable linearly between an unlocked position and a locked position. Rotation of the switch member from the first position to the second position moves the locking bolt from the unlocked position to the locked position.

A security latch for sashes comprises a shell body, a moving piece, an axle and a resilient assembly. An accommodating cavity is formed inside the shell body and opened at a flat side of the shell body, and a first concave surface is formed at a bottom of the accommodating cavity away from the flat side. The moving piece is received in the accommodating cavity and is rotatable around the axle installed in the accommodating cavity. The moving piece comprises an engaging face formed at a side thereof and a second concave surface formed at another side thereof. The resilient assembly is disposed between the first concave surface and the second concave surface to resiliently and movably engage with the first and second concave surfaces. The engaging face emerges out of the accommodating cavity from the flat side for blocking any movement along the flat side.

A hardware retention mechanism comprising a frame including a first guide shoulder and a pivot point; an actuator arm including a first guide post; and a first shape memory alloy wire strung between the first guide shoulder and the first guide post that rotates the actuator arm between a locked position and an unlocked position. The actuator arm is rotatable around the pivot point between a locked position and an unlocked position. In some embodiments, the frame may further comprise a second guide shoulder, the actuator arm may further comprise a second guide post, and a second shape memory alloy wire may be strung between the second guide shoulder and the second guide post that rotates the actuator arm between an unlocked position and a locked position.

An electromechanical locking device for a closure element includes a stator, with a rotor, a locking element and a blocking element, wherein the rotor is mounted in the stator, wherein the locking element is movable between two positions, wherein a starting position and a release position can be assumed by the blocking element. In the starting position, the blocking element prevents a movement of the locking element into the second position and in the release position the blocking element enables a movement of the locking element into the second position. The locking device includes a spring element, wherein the spring element interacts with the blocking element such that when the blocking element moves from the starting position into the release position, the spring element is at least temporarily tensioned in such a way that the spring element pushes the blocking element back in the direction of the starting position.

The invention relates to a movement lock for a locking element or an actuator in a locking system which can be operated in a mechanical or mechatronic manner. Provision is made here for the movement lock to have a blocking element which can be brought into engagement with the locking element or actuator by a system which is maintained under tension or caused to move and can be triggered as a result of an external pulse application on the locking system.

There is disclosed a dead-latching slam bolt lock that includes a rotating dead-latching slam bolt which prevents attempts at breaking in without actuating the lock mechanism. A tongue or toggle acted on by the door jamb engages the bolt and initiates rotation thereof in the door closing direction, but is passive in the opening direction. The locking mechanism may be manual or electronic, and controls the position of a blocking element which alternately prevents and permits unlocking (rotation) of the rotating bolt. In a forward or blocking position, the blocking element prevents rotation of the bolt from a locked position, while in a retracted position the blocking element permits rotation of the bolt to an unlocked position. A spring detent plunger holds the rotating bolt in either its locked or unlocked positions.