Rotatable and height adjustable chair - has sectional foot operated locking system around central support column (NL010377)

摘要

A chair or stool has a rotatable or height adjustable seat and a vertical support column fitted into a foot or base. A foot-operated position locking system is constructed such that the foot lever has a peripheral section extending around the foot or base of the chair or stool at a short distance from the floor. Each section of the locking system foot operated device is separately connected to the locking device in such a way that any one may be operated to lock or release the support column for height adjustment of the seat surface.