A monitoring device arranged to be fitted to a door, wherein the door includes an operating bar mounted on the door for angular movement about its axis and a handle which is connected to the operating bar by a pivotal connection; wherein the device comprises a body element and a cover element arranged to slide relative to the body element and the two elements having a closed configuration and an open configuration in which the cover element is extended relative to the body element thereby allowing the device to be fitted to a door; the body and cover elements being shaped so that when in the closed configuration a pocket is formed that substantially surrounds an operating bar and further wherein the cover element comprises a portion extending over a region of a handle of a door to which the device is fitted such that that handle is prevented from rotating relative to the door; and monitoring circuitry arranged to monitor the device.

A lockout device is able to secure a door on a panel. The lockout device includes a housing and a flexible line. The housing has a first mounting portion adapted for securement to one side of the panel and the flexible line has on one end thereof a second mounting portion adapted for securement to another side of the panel from the first mounting portion. The housing further supports at least one line engagement element, and the flexible line extends through at least a portion of the housing including the at least one line engagement element for selective engagement therewith. In use, the mounting portions may be affixed or attached to opposing sides or edges of the panel, the flexible line drawn taut, and the line engagement element(s) of the housing used to engage the flexible line to hold it in position with respect to the housing.

The invention is a saddle lock that is inexpensive to manufacture and can be used with different style and/or size saddles.

A safety gate includes a first column, disposed on a first side of an elevator shaft, a second column, disposed on a second side of the elevator shaft, a first gate panel, and a second gate panel. The first gate panel is coupled to the first column via a first locking hinge. The second gate panel is coupled to the second column via a second locking hinge.

The disclosure pertains to a child-proof lock and an unlocking and locking method thereof, the child-proof lock comprises a first lock member and a second lock member, the second lock member is slidably provided on two rod portions of a first rod portion, and the second lock member is displaced outward to disengage from one rod portion, and is then rotated about the other rod portion as an axis of rotation to form an opening for releasing handles for unlocking.

A keyless gate lock apparatus and system. The keyless gate lock apparatus and system of the present disclosure may comprise a lock assembly comprising a housing configured to be coupled to a first surface of a gate or a fence, a lock plate configured to be coupled to a second surface of the gate or the fence, and a lock bar comprising an elongated body extending from a first end to a second end. The lock assembly may comprise an electronic lock assembly configured to establish a wireless data transfer interface with a mobile electronic device and selectively actuate at least one locking mechanism to unlock the lock bar from the lock assembly in response to authorizing an access request from the mobile electronic device.

A door lock for a door having a door panel and a door knob coupled to the door panel. The door lock is configured to engage with the door knob to block the door panel from moving to an opened position. A method includes installing the door lock on the door knob.