Patent ID: 6932430

Claim:
A seating unit comprising: a base, a seat, a back, and a control operably supporting the seat and the back on the base for synchronous movement as the back is moved between upright and recline positions; the control including a housing, a first mechanism providing a biasing supporting force to the back during recline, and a booster spring mechanism for increasing the supporting force; an on/off selector device for selectively activating and deactivating the booster spring mechanism includes a stop member slidably mounted to the housing and that is movable to a self-sustaining disengaged first position for deactivating the booster spring mechanism and an engaged second position for activating the booster spring mechanism; and the booster spring mechanism operably connected to the back for rotation therewith during recline of the back, the booster spring mechanism defining an axis of rotation and including an arm extending from the axis of rotation that freely rotates when the stop member is in the disengaged first position, but that when in the second position, engages the stop member to tension the booster spring mechanism upon recline of the back.