US Patent 9534422 Latch fitting tool

The disclosure relates to a child safety lock mechanism for a cupboard, the cupboard includes at least one movable door and fixed frame, the locking mechanical system includes an external section arranged on the outside of the cupboard door, an internal section secured to a part of the frame, a latching means and a releasing means, wherein the external section is removably lockable to the internal section by the latching means and releasable by the releasing means. The latching means and releasing means are mutually engageable to release the latch, and extend from a first surface of the door to a second surface of the door to effect the engagement.