Patent ID: 7452308

Claim:
A cross-crawl chair comprising: a chair frame; a chair back mounted to the chair frame; a chair seat mounted from the chair frame so as to extend transversely relative to the chair back; a right arm actuator mounted relative to the chair frame and driven by a first drive mechanism; a left arm actuator mounted relative to the chair frame and driven by a second drive mechanism; a right leg actuator mounted relative to the chair frame and driven by a third drive mechanism; a left leg actuator mounted relative to the chair frame and driven by a fourth drive mechanism; a right arm support having an upper end pivotally suspended from the chair frame at a first point adjacent to and spaced adjacent an upper portion of the chair back so that the right arm support is pivotally movable in an arc about the first pivot point and a lower portion attached to the right arm actuator; a left arm support having an upper end pivotally suspended from the chair frame at a second point adjacent to and spaced adjacent an upper portion of the chair back so that the left arm support is pivotally movable in an arc about the second pivot point and a lower portion attached to the left arm actuator; a right leg support having an upper end pivotally suspended from the chair frame at a third point spaced above and outwardly of the seat so that the right leg support is pivotally movable in an arc about the third pivot point and a lower portion attached to the left leg actuator; a left leg support having an upper end pivotally suspended from the chair frame at a fourth pivot point spaced above and outwardly of the seat so that the left leg support is pivotally movable in an arc about the fourth pivot point and a lower portion attached to the left leg actuator; a control system mounted to the chair frame that controls the first, second, third, and fourth drive mechanisms so that the right arm support, left arm support, right leg support and left leg support are driven independently, and wherein the control system includes control means for synchronizing movement of the right arm actuator with the left leg actuator and the movement of the left arm actuator with the right leg actuator by controlling said first, second, third and fourth drive mechanisms so as to provide a cross-crawl motion.