Patent ID: 8220872

Claim:
A sitting device enabling a user to sit with one side of a lower portion of the body of the user supported, while enabling the user to maintain a standing posture with an unsupported leg of the user, which encourages the natural lordosis typical in standing posture therefore eliminating the source of sitting-related back pain, comprising: two, left and right, half seats split along a midline wherein one half seat supports the one side of the lower portion of the body of the user; a seat support frame; and two half-seat-position-adjusting actuators, wherein the frame includes a horizontal crossbar and a vertical guide tube, and wherein a back end of each of the two half seats are pivotally secured on the horizontal bar, the vertical guide tube housing a length-changing mechanism to vary the height of the sitting device and a height fixing mechanism which prevents yielding of the height of the sitting device when the user sits, the two half-seat-position-adjusting actuators being attached at one end of each to the vertical tube and at the other end to the respective half seat.