An illustrative access control system includes a locking assembly operable in locked and unlocked states, and a drive assembly operable to actuate the locking assembly. The drive assembly includes an electromechanical actuator, and energy storage device, and a control system. The electromechanical actuator is operable, upon receiving power, to transition the locking assembly between the locked state and the unlocked state. The energy storage device is electrically coupled to the electromechanical actuator, and configured to store electrical power from the power supply when the drive assembly is coupled to the power supply. The control system is configured to couple the drive assembly to the power supply in response to a first condition, and to thereafter transmit energy only from the energy storage device to power the electromechanical actuator, based at least in part upon a level of energy stored in the energy storage device.

A latch assembly that is adjustable between first and second backset settings. A cam is rotatable about a cam axis, and facilitates linear displacement of a latch link in a first direction. A multiplier link is rotatable about a multiplier link axis that is offset from the cam axis can be rotated in the first rotational direction by engagement with the latch link. A latch bar is coupled to the multiplier link and is linearly displaced in a second direction by rotation of the multiplier link in the first direction. The latch apparatus also includes a latch bolt that is coupled to the latch bar, the latch bolt being displaced toward a retracted position by the displacement of the latch bar in the second direction. The latch assembly can also include a dead latch link can block retraction of at least the latch bolt.

A door handle set includes a handle assembly having a primary lock and having a handle rotatable about a primary rotational axis. A latch bolt assembly has a latch bolt. The latch bolt assembly is operatively coupled to the handle assembly, wherein a rotation of the handle results in a linear translation of the latch bolt. A supplemental lock has a second axis parallel to, and spaced apart from, the primary rotational axis. The supplemental lock has an actuator that is operable relative to the second axis. The supplemental lock is configured to selectively block the rotation of the handle regardless of the locking state of the primary lock.

The invention belongs to the technical field of locks, and particularly relates to a lock facilitating double-locking from the outside. The lock comprises a cylinder, a cylinder follower, and a bolt component. The lock further comprises a rotating handle, a fixing part fixedly connected with an external supporting surface, a rotating part fixedly connected with the rotating handle and movably connected with the fixing part, a stopper arranged on the fixing part and movably connected with the rotating part, and an adapter movably connected with the rotating part and connected with the cylinder follower. The structure facilitates double-locking from the outside. A restoration structure for restoring the cylinder is not needed. Therefore, the structure is simple, cost is low, the adapter is easy to mount and dismount, a user can adjust the installation mode of the adapter and the cylinder follower, and even non-professionals can install the lock.

A lockset comprises an upper shell and a bottom plate which are fixedly connected to each other. An accommodating space is formed between the upper shell and the bottom plate. A jack is provided on the surface of the upper shell. A locking mechanism is provided within the accommodating space. The locking mechanism comprises a locking hook fitted with the jack and a control device for controlling the locking hook to move. The locking hook comprises a hook portion accessible to the underneath of the jack and a connection portion controlled by the control device. When a code is correct, the hook portion may move toward one side of the jack; and, when the code is wrong, the connection portion is limited by the control device, and the hook portion is limited underneath the jack.

Provided is a mortise device. According to one embodiment, the mortise device includes a mortise installed at a door, a face plate coupled to one side surface of the mortise, a latch bolt which thrusts out of or retracts into the one side surface of the mortise to which the face plate is coupled, a guide protrusion formed on the latch bolt, and a fixing pin which allows the latch bolt to be installed in the mortise.

Provided is a mortise device. According to one embodiment, the mortise device includes a mortise installed at a door, a face plate coupled to one side surface of the mortise, a latch bolt which thrusts out of or retracts into the one side surface of the mortise to which the face plate is coupled, a guide protrusion formed on the latch bolt, and a fixing pin which allows the latch bolt to be installed in the mortise.

An exemplary bolt assembly includes a housing, a bolt, and a magnetic sensor. The housing includes a tubular sleeve configured for mounting in a latch bore of a door. The bolt is movably mounted to the housing for movement between an extended position and a retracted position. The magnetic sensor includes wires that extend through the tubular sleeve, and is operable to transmit information relating to an open/closed position of the door.

A latching handleset assembly includes a handle, a trigger, and a latch driver. The handle has a handle portion and a top mounting portion that extends from an escutcheon. The top mounting portion has a top surface and a bottom that is at least partially obscured by the handle portion. The trigger includes an exterior end located along the bottom of the top mounting portion and an interior end extending into the escutcheon. The trigger is pivotable about a pivot point positioned within the escutcheon. The latch driver is movable between a neutral position and a latch actuating position in response to actuation of the trigger.

A door latch apparatus that is mounted on a vehicle door and that achieves at low cost a structure that is for ensuring operational reliability of an open lever. The door latch apparatus includes a cap formed by resin material and including a cylindrical shape, the cap being arranged in an inserted manner at an attachment shaft extended in a form of a shaft in a predetermined direction, an elastic spring member that elastically biases a pawl from a non restriction position towards a restriction position, and a coming-off prevention mechanism that, by making part of the elastic spring member to engage with the cap, prevents the cap from coming off from the attachment shaft.