Patent ID: 6890031

Claim:
A seat back adjustable by an operator to accommodate an occupant, comprising: a seat liner having: a center back section, and a side wing section, said side wing section being coupled to said center back section for pivotal movement through a range of motion between a first, wide position in which said side wing section is disposed at a first angle with respect to said center back section, and a second, narrow position in which said side wing section is rotated toward said center back section and disposed at a second angle with respect to said center back section; a wing actuator disposed behind said seat liner, said wing actuator having a longitudinal axis and including a lever section and a wing support section, said wing actuator being disposed with respect to said seat liner with said longitudinal axis being substantially parallel to and behind said center back section and said wing support section being disposed behind said side wing section, said wing actuator being mounted for pivotal movement about said longitudinal axis through a range of motion between a first, retracted position in which said wing support section engages said side wing section in said first, wide position, and a second, extended position in which said wing support section engages said side wing section in said second, narrow position; and an adjuster having: a user control portion, a wing actuator engaging portion coupled to said user control portion and said wing actuator, said wing actuator engaging portion configured to move said wing actuator through said range of motion between said first, retracted position and said second, extended position, and a biasing mechanism coupled to said wing actuator and configured to bias said wing actuator toward one of said first, retracted position and said second, extended position.