Patent ID: 7380880

Claim:
A frame assembly for suspending a chair above the ground and for a front-to-back pendular motion relative to the frame assembly when supported on the ground, the frame assembly comprising: a base member, said base member including a central support having a central vertical axis and a plurality of base legs for supporting the base member on the ground, said legs being disposed along respective radii and radiating outwardly from said central support and the axis thereof, an arcuate two-part support frame, said support frame comprising an upper and a lower frame element, each frame element being generally curvilinear and including a first end and a second end, first means for releasably connecting the first end of the lower frame element to the second end of the upper frame element, wherein to form said support frame, and second means for releasably connecting the second end of the lower frame element to said central support of said base member, wherein the first end of the upper frame element is substantially aligned with the vertical axis of said central support of the base member.