| 摘要 |
<p>A convertible carriage (60) including a superstructure (62) with a seat for carrying a person to be transported, and a number of wheels (71, 74, 108). The wheels are rollably supported by wheel support structure (68, 70, 80, 82) which is movably interconnected with the superstructure. The superstructure is rollably transportable when the wheel support structure and wheels are in an extended position. The carriage further includes a device (76, 78) for relocating the wheels concurrently between the extended position and a retracted position in the superstructure.</p> |
