A chair includes a base, a seat, a back, and a control operably supporting
the seat and back on the base for movement between upright and recline
positions. The seat and back include a stiff perimeter frame with
opposing perimeter sections, and a plurality of rods each independently
bendable in vertical and angled directions. End bearings on the rods are
captured in pockets in the perimeter frame, which limits their inward and
outward sliding movement. The control includes front and rear leaf
springs and a pivot arm operably supporting the seat and the back for
synchronous movement, with the direction of movement being such that
energy is stored during recline. The energy stored during recline assists
in providing a heavier person with added counterbalancing force during
recline. A booster mechanism is also selectively engageable for added
support upon recline.