A maintenance window locking device is disclosed, including a maintenance window body, a maintenance window cover, a fastening plate, a first limiting mechanism including a groove, and a roller. The fastening plate includes a fastening plate body and a pin which are of an integrated structure. The pin is rotatably connected to the roller. The maintenance window body is hinged to a first end of the maintenance window cover. The fastening plate body is rotatably connected to a second end of the maintenance window cover. The first limiting mechanism is located on the maintenance window body. The fastening plate body drives the maintenance window cover to move toward the maintenance window body. The roller rolls along the first limiting mechanism until the roller is clamped into the groove, such that the maintenance window cover and the maintenance window body are tightly attached.

The present disclosure discloses a door lock, comprising a cam having a notch, wherein the door hook is fixed in the cam when a door hook mounted on the door is inserted into the notch of the cam; driving means actuated by a push force from outside of the door, a pull force from outside of the door, a push from inside of the door, or by a control signal, wherein the driving means moves the cam from a locked position to an unlocked position.

The present disclosure discloses a door lock, comprising a cam having a notch, wherein the door hook is fixed in the cam when a door hook mounted on the door is inserted into the notch of the cam; driving means actuated by a push force from outside of the door, a pull force from outside of the door, a push from inside of the door, or by a control signal, wherein the driving means moves the cam from a locked position to an unlocked position.

Narrow backset auto-latching mortise lock for sliding door is a mortise lock that is fully contained within a 1.5 inch wide casing or housing that includes actuated automatic latching and automatic unlatching mechanism. Narrow backset auto-latching mortise lock for sliding door is a mortise lock that properly fits a narrow backset sliding door with a backset dimension of 1.25 inches. The design of narrow backset auto-latching mortise lock for sliding door has been elongated so that the latch or bolt is moved downwards and positioned below the lever hub. The positioning of the latch or bolt at a location below the lever hub requires special linkage and mechanical components in order to make the mortise lock function properly. This design required all new lock components, including a new latch lever with a dual hub arm, a dual latch arm, and a dual latch arm pin.

Narrow backset auto-latching mortise lock for sliding door is a mortise lock that is fully contained within a 1.5 inch wide casing or housing that includes actuated automatic latching and automatic unlatching mechanism. Narrow backset auto-latching mortise lock for sliding door is a mortise lock that properly fits a narrow backset sliding door with a backset dimension of 1.25 inches. The design of narrow backset auto-latching mortise lock for sliding door has been elongated so that the latch or bolt is moved downwards and positioned below the lever hub. The positioning of the latch or bolt at a location below the lever hub requires special linkage and mechanical components in order to make the mortise lock function properly. This design required all new lock components, including a new latch lever with a dual hub arm, a dual latch arm, and a dual latch arm pin.

A lock, in particular for an electric bicycle, includes a locking mechanism that has a latch that is movable between a latched position, which is provided for securing a counter-piece movable relative to the locking mechanism, and an unlatched position provided for releasing the counter-piece. The lock includes a blocking device, including a blocking element that is adjustable between a blocking position, in which the latch is blocked in its latched position, and a release position in which the latch is movable into its unlatched position, and a reception unit for receiving a release signal by which the adjustment of the blocking element into the release position can be brought about. A locking system may include at least one such lock.

A latch assembly includes a forkbolt biased to rotate in a first direction about a first pivot point, and a detent biased to rotate in a second direction about a second pivot point, the detent configured to engage with the forkbolt in at least two different positions. The latch assembly further includes a tertiary catch biased to rotate in the first direction. The detent is configured to engage a portion of the tertiary catch and rotate the tertiary catch when the detent is rotated in the first direction.

A latch assembly includes a forkbolt biased to rotate in a first direction about a first pivot point, and a detent biased to rotate in a second direction about a second pivot point, the detent configured to engage with the forkbolt in at least two different positions. The latch assembly further includes a tertiary catch biased to rotate in the first direction. The detent is configured to engage a portion of the tertiary catch and rotate the tertiary catch when the detent is rotated in the first direction.

The present application provides a lock (100) for a door. The lock comprises a housing (102), a lock mechanism (108), and a bolt (104). An end portion (112) of the bolt comprises a trigger (106). The lock mechanism is operable to move the bolt between a locked position in which the end portion extends through an opening in the housing and projects from the housing, and an unlocked position in which the end portion is within the housing. The lock further comprises a retraction mechanism (110), wherein actuation of trigger causes the retraction mechanism to automatically move the bolt from the locked position into the unlocked position.

The disclosed apparatus, systems and methods relate to a quick release grill guard further comprising at least one latching system configured for the quick release and pivot of the grill guard away from the vehicle grill face. In certain embodiments, the quick release grill guard further comprises a grill guard coupling portion, a vehicle coupling portion, a latching portion a hinge, a quick release bar; and a clasping member. In certain embodiments, the grill guard coupling portion is capable of being freely pivoted relative to the hinge by actuation of the clasping member by way of the quick release bar. In exemplary embodiments, the quick release bar is in operable communication with multiple latching systems so as to release the grill guard in a plurality of locations simultaneously.