Patent ID: 7090240

Claim:
A tiltable seating frame for selective positioning of seating in a wheelchair, comprising: a seat platform having opposing sides that each extends to an arcuate distal edge and each side defining an arcuate slot parallel to the distal edge; opposing supports extending from a chassis of a wheelchair towards the seat platform; opposing pairs of front and rear rollers attached in spaced-apart relation to the supports, the front and rear rollers on each support in contact with the distal edge of the respective side extending from the seat platform; at least a pair of opposing guide rollers each attached to a respective one of the supports intermediate and spaced towards the seating platform relative to the respective front and rear rollers and extending through the arcuate slot of the respective side of the seat platform, the guide rollers each mounted on a respective shaft that extends through an elongate opening defined in each support intermediate the front and rear rollers for selective adjustable positioning of the guide rollers to accommodate smooth travel of the seat platform on the rollers; and fasteners received on the threaded end of the shaft to secure the shaft in a selected position, whereby the seat platform moves to a selected angled position relative to the chassis by the guide rollers moving in the arcuate slots and the distal edges traveling on the front and rear rollers.