Abstract: A body support structure includes a base, a seat and a backrest, with the backrest connected to the base with a torsion leaf spring. The torsion leaf spring may be configured with a plurality of fingers, and/or one or more flex regions. One or more struts may be connected between the seat or backrest and the base. In another aspect, the seat and/or backrest may be supported with one or more links that provide a counter-intuitive motion. In another aspect, a link may be coupled to a support with a flexible blade.

Abstract: A chair can include a chair back, or backrest, that is coupled to a base of a chair above a seat of the chair. A tilt mechanism can attach the backrest to the base at spaced apart locations. In some embodiments, the tilt mechanism can be configured so that the backrest rotates about multiple pivots as it reclines from an upright position to a reclined position to drive forward motion of the seat during recline of the backrest.

Abstract: Self-adjusting furniture, seating, and accessories disclosed. When the user applies a force to the seating by shifting his or her center of gravity, the backrest and/or seat/bed portions of the seating/furniture move in response to the force to recline or adjust the seating/furniture or accessories. The user can return the seating to an upright position by again shifting his or her center of gravity. The angle of the backrest and/or seat/bed portions can vary relative to the ground as the user moves. Continuously varying the angle of both the backrest and seat/bed portions of the seating/furniture or accessories relative to the ground may improve a user's seating comfort, for example, by decreasing or negating the user's need to shift position on the seat when reclined or continuously responding the user's shift in position.

Abstract: An infant care apparatus capable of providing various swing motions is disclosed. The infant care apparatus includes a base, a sliding mount, and a seat frame. The base has a concave surface. The sliding mount has a convex surface matching with the concave surface and disposed opposite to the concave surface. The sliding mount slides above the concave surface by the convex surface. The seat frame is fixed on the sliding mount to be moved together with the sliding mount. Thereby, the seat frame together with the sliding mount can swing relative to the base in two dimensions. The infant care apparatus can provide various swing motions without any pendulum arm to child sitting thereon. Besides, the infant care apparatus can be assembled in a compact size facilitating transport.

Abstract: A tiltable seating frame (10) for selectively positioning seating in a wheelchair, in which a seat platform (12) has opposing sides (18) that each extend to an arcuate distal edge (20) and each side defines an arcuate slot (22) parallel to the distal edge. A base (14) has opposing sides (70) that receive pairs of front and rear rollers (72, 74) on which the distal edges (20) travel. Each side (70) also receives a guide roller (76) attached intermediate and vertically spaced relative to the front and rear rollers (72, 74). The guide rollers (76) extend through the respective arcuate slot (22) of the seat platform (12), to guide the movement of the seat platform (12) relative to the base (14).