| 摘要 |
<p>The device has two bigger wheels (2) and two smaller wheels (3) acting as braking devices for the bigger wheels (2) as well as a handle (6) for pushing. Two frames (7) for the accommodation of the large wheels of the wheelchair are attached laterally to the central part (1) and can be folded around longitudinal axles (8). The frames (7) are assembled of front and rear carrying elements (9, 10) with transversal bridges (13) which can be rotated around transversal axles (11).</p> |
