Rising butt hinge

The office bathroom has an unusual hinge on the cubicle door, which I’ve often wondered about while ensconced behind that door.


What’s clever about that design is that the spiral shape of the joint makes the door close itself automatically, as the weight of the door pulling downwards is transformed into a torsional motion.

I finally learned today that such hinges are called rising butt hinges, and that one popular use of them is for doors in rooms with heavy carpeting – the door lifts upwards slightly as it opens, and in the process is able to clear the carpet layer.

What a simple, elegant design!


One comment on “Rising butt hinge

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