A lock with an emergency unlocking feature includes a latch bolt, a top rotation member, a restriction plate and a driving member. The driving member is connected to the deadbolt. When the top rotation member is rotated from a close position to an open position while the lock is locked, a restriction member drives the restriction plate to press a resilient unit. The restriction plate is moved to disengage the engaging member on the restriction plate from the second notch of the driving member. The guide slot of the transmission plate pulls the second guide member to move the deadbolt to the unlocked position, and the latch bolt moves to the open position. When in an emergency situation, the user rotates the handle to retract both of the deadbolt and the latch bolt without using a key to unlock the deadbolt to save time.

A modularized electric latch control device includes a mounting seat and a locking cap device pivotably mounted to the mounting seat and pivotable relative to the mounting seat between a closure position and a non-closure position. Optionally mounted to the electric latch control device are a stopper, a closure member, a locking latch restraining frame, a first escutcheon, and a second escutcheon. The electric latch control device is selectively assembled into a first mode (including the first escutcheon), a second mode (including the closure member, the stopper, and the second escutcheon), or a third mode (including the locking latch restraining frame, the stopper, and the second escutcheon) for cooperating with a cylindrical latch device, a first box type latch device, or a second box type latch device.

A lockset assembly with selective opening and closing, which primarily includes a press component, a linking component, a positioning component, a braking component, a sliding component, a connecting rod, a sliding rod, and an arresting rod. The press component is connected to the arresting rod using the linking component and the positioning component. The braking component is installed on one side of a handle shaft of the lockset, and the sliding component is installed on an upper edge of the handle shaft. The sliding component is able to slide along the handle shaft. Accordingly, pressing of the press component causes switching, which causes a displacement of the positioning component and a corresponding arrestment or disengagement of the arresting rod, thereby enabling the lockset to form a state which can be opened with a handle both from inside and outside a room.

A method of controlling a lock mechanism of an active door includes transiting an access controller of the lock mechanism to an authorized access mode and transitioning the access controller from the authorized access mode to an entry mode. Transitioning the access controller to the authorized access mode is in response to an authorized user being sensed approaching the active door from an exterior side of the active door or in response to input on a remote device. In the authorized access mode, an exterior handle of the active door is decoupled from a main latch of the lock mechanism. Transitioning the access controller to the entry mode is in response to sensed contact with the exterior handle. In the entry mode, the exterior handle is capable of rotating to transition the access controller to an unlocked mode in which the exterior handle is operably coupled to the main latch.

A method of controlling a lock mechanism of an active door includes transiting an access controller of the lock mechanism to an authorized access mode and transitioning the access controller from the authorized access mode to an entry mode. Transitioning the access controller to the authorized access mode is in response to an authorized user being sensed approaching the active door from an exterior side of the active door or in response to input on a remote device. In the authorized access mode, an exterior handle of the active door is decoupled from a main latch of the lock mechanism. Transitioning the access controller to the entry mode is in response to sensed contact with the exterior handle. In the entry mode, the exterior handle is capable of rotating to transition the access controller to an unlocked mode in which the exterior handle is operably coupled to the main latch.

A bolting mechanism with a lockdown mode is provided. The bolting mechanism includes at least one bolt, the bolt moveable between a thrown position for securing a door and a retracted position, at least one first rotor arranged to simultaneously drive the bolt and one or more drive members, a first bias arranged to drive the at least one first rotor to urge the bolt to the thrown position, and a lockdown assembly comprising a lockdown button and plunger. The plunger is movable between a blocking position and a retracted position wherein the plunger is biased by a second bias to engage with one of the drive members and block throwing of the at least one bolt. The lockdown button is arranged to release the plunger so the first bias throws the bolt or primes the bolt ready to be urged to the thrown position.