Patent ID: 6773066
Filing Date: 2004-08-10
Classification: A47C

Abstract:
Structure to support a seat on which an occupant is to be seated, said structure comprising:a base comprising a pair of rigid spaced-apart struts, each strut having a front leg and a rear leg, said legs meeting at a junction located forwardly of a mid-point between their lower ends, a rigid cross-beam joined to said struts at said junction, said rear legs proportioned to remain firmly on the ground; a control comprising a lower arm rigidly attached to said cross-beam, an upper arm on which said support is rigidly mounted, and a pivot rotatably joining said arms near the center of curvature of said arcuate edge forwardly of said mid-point and lower than a knee of an occupant, said arms extending rearwardly from said pivot, whereby an occupant can rock said support while his feet remain on the floor, a rearwardly extending stiffly flexible flexure fixed to said lower arm and extending rearwardly in a cantilever manner toward an unsupported free end between said arms, and a contactor extending across and above said flexure carried by said upper arm so disposed and arranged as to contact the said flexure at a spacing from its attachment to said lower arm so that the flexure will bias the support toward an upper position, weight of an occupant tending to rock the support rearwardly against said bias; said cross-beam having a convex upper surface, and said lower arm having a matching concave lower surface, said surfaces being in surface contact with one another; said cross beam having a socket, and said lower arm including a post depending therefrom insertable into said socket to support and maintain said lower arm and upper arm rigidly retained on said cross-beam.