ELEVATED SWIVEL CHAIR HAVING A MOVABLE FOOT SUPPORT FOR LOCKING THE CHAIR AGAINST SWIVELING MOTION

摘要

Abstract of the DisclosureA swivel chair of the type comprising a seat which issupported at an elevated position above a base for swivelingmotion relative to the base, and which has a foot supportdisposed between the base and seat for aiding a user ofthe chair to ascend to the elevated seat, is providedwith clamping elements that are responsive to foot pressureapplied to the foot support for preventing swiveling motionof the seat relative to the base when such foot pressurein excess of a predetermined amount is applied. The clampingelements preferably comprise an inclined surface on a bracketthat pivotally supports the foot support, and a wedge-shapedelement that is disposed between the inclined surface and thepillar of the swivel chair for axial displacement in responseto pivotal motion of the foot support resulting from the ap-plication of foot pressure thereto.