The present application provides a lock (100) for a door. The lock comprises a housing (102), a lock mechanism (108), and a bolt (104). An end portion (112) of the bolt comprises a trigger (106). The lock mechanism is operable to move the bolt between a locked position in which the end portion extends through an opening in the housing and projects from the housing, and an unlocked position in which the end portion is within the housing. The lock further comprises a retraction mechanism (110), wherein actuation of trigger causes the retraction mechanism to automatically move the bolt from the locked position into the unlocked position.

Various disclosed embodiments include a lock assembly. The lock assembly includes a lock bolt. The lock bolt has a lock bolt body and having a bolt security engagement feature formed as part of the lock bolt body. The lock assembly also includes a receiver. The receiver has a receiving area for receiving at least a portion of the lock bolt and the receiver has a receiver security engagement feature formed as part of the receiver. The receiver security engagement feature is complementary to the lock bolt security engagement feature.

Various disclosed embodiments include a lock assembly. The lock assembly includes a lock bolt. The lock bolt has a lock bolt body and having a bolt security engagement feature formed as part of the lock bolt body. The lock assembly also includes a receiver. The receiver has a receiving area for receiving at least a portion of the lock bolt and the receiver has a receiver security engagement feature formed as part of the receiver. The receiver security engagement feature is complementary to the lock bolt security engagement feature.

Apparatus and associated methods relate to an access control system having a planar interlocking mechanism including two reflectively symmetric rotating moon gears mechanically coupled by a linear slide configured to respond to rotation of the moon gears. In an illustrative example, the moon gears are mechanically coupled by the linear slide via respective actuating cams. The moon gears may be provided, for example, with locking cams configured to releasably secure the linear slide via a corresponding follower on the linear slide. Rotation of one moon gear into a first mode may, for example, place the other moon gear in a second mode, and vice versa. Each moon gear may be configured, for example, to be operated by a removable peg. Various embodiments may advantageously be configured such that release of a removable peg from one moon gear captures a peg in a corresponding moon gear.

The lock according to the invention is meant for locking cabinets, vaults and different machines. The lock has a lock frame, which comprises a bolt. A lock cylinder has been arranged in connection with the lock frame. The lock frame further comprises a power transmission mechanism between the lock cylinder and the bolt. The power transmission mechanism comprises a transmission lever and a latch. The transmission lever additionally comprises a retaining protrusion. The bolt comprises a locking pin and the lock frame additionally comprises a hole for the locking pin. The lock is arranged to allow movement of the lock cylinder and the power transmission mechanism in the direction of the longitudinal axis of the lock cylinder due to an external hit or drilling of the lock cylinder, whereby the movement in the direction of the longitudinal axis moves the retaining protrusion away from the locking pin. Thus, the end of the locking pin moves into the hole in the frame.

A remote safety release comprises an actuator (13) adapted to move between a inoperative position wherein it does not interact with the locking mechanism of a switch and at least one operative position wherein it interacts with the locking mechanism, a remote control device (14) adapted to promote the movement of the actuator from the inoperative position to an operative position, a transfer mechanism (15) adapted to transfer a force from the remote control device (14) to the actuator (13) following the command given by the operator to promote the movement of the actuator (13) and adapted to exert a first solicitation on the actuator (13) to promote its automatic passage from the inoperative position to an operative position, while the remote control device (14) constantly exerts on the actuator (13) a second contrast solicitation opposite to the first solicitation and having at least equal value.

Various disclosed embodiments include a lock assembly. The lock assembly includes a lock bolt. The lock bolt has a lock bolt body and having a bolt security engagement feature formed as part of the lock bolt body. The lock assembly also includes a receiver. The receiver has a receiving area for receiving at least a portion of the lock bolt and the receiver has a receiver security engagement feature formed as part of the receiver. The receiver security engagement feature is complementary to the lock bolt security engagement feature.

Various disclosed embodiments include a lock assembly. The lock assembly includes a lock bolt. The lock bolt has a lock bolt body and having a bolt security engagement feature formed as part of the lock bolt body. The lock assembly also includes a receiver. The receiver has a receiving area for receiving at least a portion of the lock bolt and the receiver has a receiver security engagement feature formed as part of the receiver. The receiver security engagement feature is complementary to the lock bolt security engagement feature.

A locking mechanism comprises a base comprising a pair of arms projecting therefrom and defining an open mouthed recess for receiving a member to be selectively retained in the recess. The mechanism further comprises a pair of locking elements mounted between said pair of arms for rotational movement between a retracted position in which they permit access to the recess and an extended position in which they extend at least partially across the mouth of the recess. The arms comprise respective guides to guide the movement of said locking elements between said retracted and extended positions. The mechanism further comprises a drive for simultaneously moving the locking elements in opposite rotational directions. The drive may comprise a drive shaft having left handed and right handed threaded portions.

A latch mechanism includes a hook-handle assembly coupled to a first panel and a clevis coupled to a second panel. The hook-handle assembly engages the clevis to secure the first panel relative to the second panel.