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How does an adjustable piston stool/ office chair work?
Hi,
Can anyone tell me or, even better, tell me a link which shows how the piston on a office chair adjusts the height? I need this for my product design school course.
Thanks.
It is a gas cylinder that has an internal piston that compresses a gas to a higher pressure when weight is put on it. A friction clamp to hold the piston's rod in a set position is the height selector. A soft spring gives a bit of cushion when a person sits on the chair. If the chair is too low, a lever releases the friction clamp, letting the piston come up, raising the chair against the chair's weight. If a person is sitting in the chair at that time, the gas pressure against the piston is not enough, and the chair goes down.
BAMILEKE BEADED CHAIR STOOL AFRICAN ART TABLE FOLK ART