Push Pull Doorlock is a revolutionary mechanical door lock: unlike the existing cylindrical or lever door lock, it doesn't need two motions, pushing or pulling after grabbing a hold of it and turning; without using hand we can open the door lock by a single motion, pushing or pulling by using a part of our body. While the existing door lock, due to the fact we have to grab a hold of it to use, has a restriction of the size of physical knob, Push Pull Doorlock has advantages that it could be expressed freely according to one?s unique and distinctive preference, suitably for one's own space interior decoration without any restriction of knob's size, material and design; it is a mechanical door lock that doesn?t need an electronic device or power supply.

Also, even handicapped persons, children, the elderly and the infirm who are not able to open the door without help can also open the door of public multiuse facility, with a single motion of just pushing or pulling; and homemaker holding an object in her hands can open the door just with a light touch; so, it is a door lock of my own, of our company?s own, and for the use of inducing people towards the door in an emergency of fire or blackout; it is a push/pull door lock that breaks the concept of the existing door lock - we can open door lock of house, office and public building only by turning or grabbing it aside with hand - and that we can open the door just using a part of our body, with a single motion of simply pushing or pulling.