| 摘要 |
PCT No. PCT/FR90/00856 Sec. 371 Date Nov. 5, 1991 Sec. 102(e) Date Nov. 5, 1991 PCT Filed Nov. 27, 1990 PCT Pub. No. WO91/07935 PCT Pub. Date Jun. 13, 1991.A wheelchair including two large carrying wheels mounted on opposite sides of a central frame is provided. One portion of the central frame is collapsible and is designated to support a seat. Another portion of the central frame defines a footrest. Steering wheels associated with the footrest also are provided. Each carrying wheel includes an outer ring and an inner ring. The outer and inner rings are concentrically oriented relative to each other such that the outer periphery of the inner ring and the inner periphery of the outer ring engage bearing elements located therebetween. The outer periphery of the outer ring is adapted to support a tire. The volume defined by the inner ring is devoid of any axle, shaft, or spoke. The frame is attached to the inner ring of the adjacent carrying wheels by releasable connectors. |
