Combined tension and back stop function for seating unit

A seating unit comprising:

• a base, a seat, a back, and a control operably supporting the seat land back on the base for movement between upright and recline positions;
• the control including a link pivoted to the seat at one end and pivoted to the base at another end, the control including a first mechanism adapted to provide a biasing supporting force during recline and further including a booster spring mechanism operably attached to the link, the booster spring mechanism comprising a torsion spring and a stop selectively engageable with the torsion spring to activate the torsion spring to boost and increase the supporting force provided to a seated user during recline, and
• the stop forms an on/off device for selectively activating or deactivating the booster spring mechanism, the on/off selector device being freely moveable and is separated from and independent from any spring bias generated by the booster spring mechanism.

In a seating unit having a base, a seat, a back adapted to pivot between upright and reclined positions, an energy mechanism for biasing the back toward the upright position, a tension adjustment mechanism for adjusting the force biasing the back toward the upright position, and a back stop mechanism for limiting the range of motion of the back to a position short of the reclined position, the improvement comprising:

• a single actuator operably attached to both the tension adjustment mechanism and the back stop mechanism for operating said mechanisms.

In a seating unit having a base, a back, and an under-seat control operably coupled to and supporting the back for movement between upright and reclined positions, the control including a housing, an energy adjustment mechanism and a back stop mechanism, an improvement comprising:

• a single actuator movable to a first operative position for selectively engaging the energy adjustment mechanism, and movable to a second operative position for selectively engaging the back stop mechanism.