A service cover assembly with a locking mechanism is provided. The assembly includes a cover plate with a first and second side, and a through-hole connecting the two sides. A main cylinder with a hollow interior is attached at a first end to the first side of the cover plate and is positioned to align the hollow interior with the through-hole. A pinion gear system is located at a second end of the main cylinder. A plurality of securing rod is provided, each rod positionable in a secured or unsecured position with the pinion gear system. At least one access barrier is disposed within the main cylinder and/or the pinion gear system to restrict access and/or operation of the pinion gear system. One of the at least one access barrier is a lock disposed within the hollow interior of the main cylinder.

A lock assembly for a door includes a lock mechanism moveable between an extended position wherein the door is locked and a retracted position wherein the door is unlocked such that the door may be opened and closed. The lock assembly also includes first and second lock cylinders operably connected to the lock mechanism such that actuation thereof causes the lock mechanism to move to the retracted position, the lock cylinders each including a first keyhole. A tamper resistant member is moveable between a protected position in which the keyhole of the second cylinder is inaccessible and an unprotected position in which the keyhole of the second cylinder is accessible, such that a tool is required in order to move the tamper resistant member from the protected position to the unprotected position, the tool adapted to be stored separately from the door.

A lock assembly for a door includes a lock mechanism moveable between an extended position wherein the door is locked and a retracted position wherein the door is unlocked such that the door may be opened and closed. The lock assembly also includes first and second lock cylinders operably connected to the lock mechanism such that actuation thereof causes the lock mechanism to move to the retracted position, the lock cylinders each including a first keyhole. A tamper resistant member is moveable between a protected position in which the keyhole of the second cylinder is inaccessible and an unprotected position in which the keyhole of the second cylinder is accessible, such that a tool is required in order to move the tamper resistant member from the protected position to the unprotected position, the tool adapted to be stored separately from the door.

Disclosed are a door lock and a door system, the door lock includes: a lock body, the lock body including a lock case, a spring bolt assembly and a shifting sleeve, the spring bolt assembly being slidably arranged in the lock case, so as to be able to extend and retract relative to the lock case, the shifting sleeve being rotatably arranged in the lock case, and the shifting sleeve being in transmission connection with the spring bolt assembly; and a first handle assembly, the first handle assembly being provided with a locking head and a motor, the locking head being rotatabversly provided with a shifting head, the shifting head being in transmission connection with the shifting sleeve, and an output shaft of the motor being in transmission connection with the shifting head, so as to be able to drive the shifting head to rotate.

An electronic lock includes exterior and interior assemblies. The electronic lock includes a bolt movable between an extended position and a retracted position. The exterior and interior assemblies are connected to, and capable of actuating, the bolt. The exterior assembly includes an escutcheon and a sensor to selectively actuate movement of the bolt. The sensor has a first side and an opposite second side and the first side is accessible from the escutcheon and the sensor is in communication with, and connected to, the processor of the interior assembly. The exterior assembly includes a first seal positioned around the sensor at the first side between the sensor and the escutcheon. The exterior assembly includes a retainer that is positioned at the second side of the sensor to position the sensor immediately adjacent the escutcheon.

An electronic lock includes exterior and interior assemblies. The electronic lock includes a bolt movable between an extended position and a retracted position. The exterior and interior assemblies are connected to, and capable of actuating, the bolt. The exterior assembly includes an escutcheon and a sensor to selectively actuate movement of the bolt. The sensor has a first side and an opposite second side and the first side is accessible from the escutcheon and the sensor is in communication with, and connected to, the processor of the interior assembly. The exterior assembly includes a first seal positioned around the sensor at the first side between the sensor and the escutcheon. The exterior assembly includes a retainer that is positioned at the second side of the sensor to position the sensor immediately adjacent the escutcheon.

A mounting plate for an electronic lock includes a main body and a wiring harness electrical receptacle configured to connect to a wiring harness. The mounting plate includes a wiring harness receiving port that is defined in the main body and axially aligned with the wiring harness electrical receptacle. The wiring harness receiving port includes a first portion sized and shaped to seal around the wiring harness and a second portion sized and shaped to axially limit movement of the wiring harness therein.

A method for mutually controlling and unlocking a dual plug in a lock, comprising: unlocking a code of a first plug first, the first plug restricting unlocking of a second plug, the second plug restricting rotating of the first plug before the code of the first plug is unlocked; after unlocking the code of the first plug, the first plug translating to a second position from a first position using a preset position difference, the first plug being unable to rotate during the translation; after moving the first plug to the second position, the first plug releasing a restriction on the second plug, the second plug still restricting the rotating of the first plug; and unlocking the code of the second plug, the first plug and the second plug being able to rotate synchronously so as to unlock the lock after unlocking the code of the second plug. The present invention further relates to a lock with a dual plug.

A lock can include attack-resistant and/or weather-resistant features. Attack-resistant features can include a sacrificial link between a locking mechanism and an external keyway covering an exterior face of the locking mechanism. The sacrificial link can break during a torque attack on the lock such that the full force of the torque attack is not applied to the locking mechanism. Weather-resistant features can include drain openings in one or more housing components external to the locking mechanism to facilitate drainage of liquid matter from the lock before the liquid matter reaches the locking mechanism.

A landing door locking mechanism of an elevator system includes a body housing key-engagement elements and having a first end and a second end, the key-engagement elements located at the first end and a keyway structure, wherein in a first position the first end of the body is exposed such that a key may be inserted into a keyway of the keyway structure and interact with the key-engagement elements. A biasing mechanism is configured to bias a moveable portion of the body toward a second position, wherein in the second position a key cannot interact with the key-engagement elements and a solenoid is configured to apply a force on the moveable portion of the body when the solenoid is energized such that the moveable portion of the body is moved from the second position to the first position.