An electronic lock with a latch assembly, an interior assembly, and an exterior assembly. The latch assembly includes a bolt movable between an extended position and a retracted position. The assembly includes an internal spring actuating mechanism. The assembly also includes a touch keypad subassembly configured to detect touches to at least a portion of its surface.

A lock mechanism includes a first mounting plate, a second mounting plate, a restricting plate, a fixing base, at least one first fixing element and at least one second fixing element. The first mounting plate and the restricting plate are mounted on one side of a door, and the second mounting plate and the fixing base are mounted on the other side of the door. The first fixing element is penetrated through the restricting plate in a direction from the restricting plate toward the second mounting plate. The second fixing element is penetrated through the fixing base in a direction from the fixing base toward the first mounting plate. The fixing base and a lock cylinder disposed on the fixing base can be disassembled and replaced by removing the second fixing element such that dismantling the whole lock mechanism is not necessary.

A lockset including a chassis having a locked state and an unlocked state, a latchbolt connected with the chassis, a handle mounted to the chassis, and a lock cylinder connected with the chassis. The handle is operable to retract the latchbolt when the chassis is unlocked, and is inoperable to retract the latchbolt when the chassis is locked. The lock cylinder includes a shell and a plug selectively rotatable relative to the shell. The chassis is configured to transition from the locked state to the unlocked state in response to rotation of the plug in a first rotational direction from a home position to a first rotated position. The chassis is configured to return from the unlocked state to the locked state in response to rotation of the plug in a second rotational direction from the first rotated position to the home position.

A door includes a rectangular panel having a first face, a second face, and two pairs of opposing edges, in which the edges of each pair of edges are parallel and in which a first pair of edges is longer than a second pair of edges. The rectangular panel includes a layered composite material, in which a first layer of the composite material has a positive Poisson's ratio (PPR) and a second layer of the composite material is disposed in contact with the first layer and that includes a material having a negative Poisson's ratio (NPR). The door includes a hinge including plates joined together by a joint, in which a first one of the plates is attached to a first one of the edges of the first pair of edges and in which a second one of the plates extends beyond the first one of the edges. The door also includes a handle opening defined through a thickness of the rectangular panel.

An exemplary status-indicating locking assembly includes a cylindrical lock assembly and a status-indicating assembly. The status-indicating assembly includes a sensor configured to sense the status of the cylindrical lock assembly, a transmission configured to communicate the lock status to at least one side of a door, and an indicator configured to display indicia relating to the lock status on the at least one side of the door. In certain forms, the sensor, transmission, and indicator may be electronic, mechanical, hydraulic, magnetic, or combinations thereof.

A clutch engagement assembly for a door lock device includes a first shaft having at an end thereof an insertion end portion in which a channel is formed; a second drive shaft having a hollow engagement end portion into which the insertion end portion of the first shaft is inserted; a driving member which provides a driving force; and a pin member that is installed in a state of being elastically supported in the engagement end portion of the second shaft and is movable by the driving member so as to extending through (be inserted in) at least a part of the first shaft and at least a part of the second shaft, thereby causing a clutch engagement or a disengagement between a first shaft and a second shaft. The clutch engagement assembly may provide a relatively small size structure of the door lock device and a firm engagement force.

A lockset is provided with a sensor assembly for detecting tampering with the cylinder. A lock cylinder with a cylinder body and a cylinder plug disposed in the cylinder body is provided. The cylinder plug is configured to deform and/or separate from the cylinder body when a sufficient force is applied. A sensor assembly is provided that detects when the cylinder plug deforms and/or separates from the cylinder body. In some embodiments, the sensor assembly could detect when the cylinder plug deforms and/or separates from the cylinder body with a strain gauge, a continuity circuit, a micro-switch, an optical sensor, an accelerometer and/or a contact microphone.

A weather resistant tumbler lock has an elongated body, and defines a longitudinal axis. The lock is interchangeable with another lock having a corresponding asymmetrical perimeter profile with an opening in a top surface sealed with a cap, the other lock having a different rotatable core and a different configuration of tumblers. A drainway provides a channel for water to flow outwardly from the interior of a shell housing, a rotatable core and a keyway within the core, to a drain below the lock. The drain connects to a channel through a lower edge. The core provides an arcuate gap in a lower quadrant adjacent the interior surface of the shell for fluid communication with the drainway. A method includes identifying a substitute tumbler lock with an impermeable outer wall for replacing another lock having an identical outer perimeter profile and a permeable closed opening on its top surface.

A handcuff is provided, including a strand, a universal handcuff key locking mechanism configured to receive a universal handcuff key, a first engageable selection mechanism located on a first side of the handcuff, and a second engageable selection mechanism positioned on a second side of the handcuff opposite the first side. Unlocking the handcuff requires actuating the first engageable selection mechanism concurrently with actuating the second engageable selection mechanism while simultaneously employing the universal handcuff key, thereby releasing the handcuff strand.

A security lock, having a lock tongue, a key cylinder (20), and a key (30). The key cylinder (20) has a main body (21), a cover (22), and a connection assembly (40). The main body (21) has a channel (24). An electronic control assembly (50) and a mechanical control assembly (60) controlling the connection assembly (40) are provided within the main body (21). The key (30) has an elongate portion (31) and a grip portion (32). A power supply and a control chip are provided within the grip portion (32). The elongate portion (31) has bitting cuts (33) and a first contact member (34) connecting to the control chip. During an unlock operation, the key (30) is inserted into the channel (24), the first contact member (34) is communicatively connected to the electronic control assembly (50), and the bitting cuts (33) press against the mechanical control assembly (60).