An opening and closing device is provided. The opening and closing device includes a housing, a displacement restricting part, an electrical driving module, and an electroless driving module. The displacement restricting part is capable of moving with respect to the housing when the electrical driving module is in an unlocked state. The electrical driving module is capable of restricting the displacement restricting part from moving with respect to the housing when the electrical driving module is in a locked state. The electroless driving module is capable of releasing the electrical driving module's restriction over the moving of the displacement restricting part with respect to the housing via the hand-driven part.

A padlock comprising a lock body, a combination mechanism to control the movement of the cam-spindle vertically, a key mechanism to control the movement of the cam-spindle rotationally, more than one clutch that is mounted in the cam-spindle which controls the vertically movement of the cam-spindle, wherein the cam-spindle is configured to control the locking and unlocking of the combination mechanism, and wherein more than one dial is mounted in the lock body, a locking bolt contacts the shackle, and the shackle has a long leg and a short leg with a bolt-receiving-cutout.

A cable lock has lock body, a cable and a wheel. The first end of the cable can be securely latched to the lock body and the second end is securely attached to the wheel so that the cable can be retracted into the lock body when the lock is in the open mode. The lock has a plurality of clutches and a plurality of dials to control the rotational movement of the clutches. The dials and clutches form a combination mechanism to control the locking and the unlocking of the lock using a combination code. When the setting of the dials matches the combination code, a release button can be used to release the first end of the cable from the lock body. The lock also has a retract button to enable the retraction of the cable, and a reset button to disengage the dials from the clutches.

The disclosure generally relates to a system and method for managing distributed encrypted combination over-locks from a remote location. In an exemplary embodiment, the invention is a distributed management system for self-storage facilities that allow for vacant units to be secured with over-locks without requiring unlock codes, and which allow the over-locks to be removed by customers without human or manual intervention from the self-storage facility, where an API is used to facilitate communications between a lock management system and a property management system.

A laminated padlock comprises a laminated padlock body formed by laminating a plurality of lock sheets, a lock core assembly, and a lock beam connected with the top of the laminated padlock body. The lock core assembly comprises a first lock tongue, a second lock tongue, a large frame, a small frame, a lock core shaft and cipher wheels; the large frame is provided with a positioning resilient piece, and the lower end of the large frame is provided with a limiting plate with a limiting chuck; shaft holes; the small frame is provided with a small resilient piece, and a branch plate is arranged below. The laminated padlock achieves dual guarantee, perfectly solves the defect that the ciphers can be changed by a cipher adjusting rod under the condition of not knowing the ciphers when the lock beam is opened and greatly enhances the safety performance of the laminated padlock.

A lock for computer security has housing comprising a bottom wall, at least one side wall and a front wall with a corner region defined adjacent to both the bottom wall and the at least one side wall. A locking assembly comprises a locking assembly body holding at least two locking elements including a main locking element and a movable locking element, both said locking elements being supported by the locking assembly body, and the main locking element extending from and away from the locking assembly body at the front wall of the lock housing. A driver is coupled to the movable locking element, configured to selectively move the movable locking element in frontwise and rearwise directions, and controlled by a locking mechanism. The locking assembly is secured to the housing at the corner region thereof, with the locking elements located directly adjacent both the bottom wall and the at least one side wall.

The lock has a hook, a locking finger and a latch. The locking finger is engaged with the hook and the latch when the lock is in the locked mode. The locking finger is disengaged from the hook and the latch when the lock is in the opened mode. The lock can be opened by a combination mechanism or by an overriding key mechanism. The combination mechanism has a button, and a plurality of dials and clutches to control the movement of the button. When the dials are set to a correct combination, the button can be moved to disengage the latch from the locking finger, allowing the locking finger to disengage from the hook. The key mechanism has a cylinder with a key slot to receive a key for rotating the cylinder to disengage the latch from the locking finger, allowing the locking finger to disengage from the hook.

The disclosure generally relates to a system and method for managing distributed encrypted combination over-locks from a remote location. In an exemplary embodiment, the invention is a distributed management system for that controls access to various locations, such as, for example, self-storage units, hotel rooms, apartment buildings, storage containers, short-term housing rentals, lockers, equipment rooms, vaults, hospitals, airports, government facilities, nuclear power facilities, water treatment facilities, weapon storage facilities, aircraft cockpits, and any other setting that requires restricted, selective, or monitored access that can be remotely controlled.

A lock, in particular a bicycle lock, includes a lock body, a locking element located outside the lock body, and a locking mechanism located outside the lock body for receiving and locking the locking element. The locking mechanism is connected to the lock body by a first rope section and the locking element is connected to the lock body by a second rope section. A length of a part of at least one of the rope sections extending outside the lock body is variable.

The disclosure generally relates to a system and method for managing distributed encrypted combination over-locks from a remote location. In an exemplary embodiment, the invention is a distributed management system for self-storage facilities that allow for vacant units to be secured with over-locks without requiring unlock codes, and which allow the over-locks to be removed by customers without human or manual intervention from the self-storage facility, where an API is used to facilitate communications between a lock management system and a property management system.