Patent ID: 6575532
Filing Date: 2003-06-10
Classification: A47C

Abstract:
A chair comprised of:a seat; an underpinning, which is fastened to and supports the seat; a planar bearing, which is fastened to and supports the underpinning; a base, which is fastened to and supports the planar bearing; wherein said planar bearing is substantially constructed of plastic and is comprised of a pair of superimposed horizontal disks which are fastened together with an axial longitudinal pin; where said pair of disks is comprised of an upper disk and a lower disk, where said upper disk has a bottom, overcut face that has a low friction first surface and a top face that is fitted with hardware for mounting the underpinning, and where said lower disk has an upper, undercut face that has a low friction second surface and a sectional portion that is equipped for mounting the base; wherein the first surface of the upper disk fits flush against the second surface of the lower disk; and whereas said upper disk, which is affixed to the underpinning, can freely rotate on the lower disk, which is stationary and is affixed to the base which holds the chair upright.