I was looong wondering if there’s a good way to let one notice if the door is to push or pull only with the shape of a normal (round/tulip shaped) doorknob. Thinking of a good knob design for pushing is not so difficult but in most cases the shape is also good for pulling and vice versa.

So I thought differently; it might work if I can find a shape that makes it HARD to push/pull. Then a user instinctively notice which way the door should open. (Not sure if this has already been used.)

The above knob is for pulling. It a little hard to turn this knob and push.

Likewise the above knob makes it a little hard to turn and pull.

There are times when you have to push a pull-door and pull a push-door, such as when you release a door stopped with a door-stopper, so I made it “a little” hard to push/pull. Will these doorknobs help many people you think?

For manufacturers, please contact me for development.

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