| 摘要 |
<p>The vehicle comprises a seat which is mounted on a chassis which has two carriages, one of which drives it. The vehicle moves up and down a rail which may be fixed to a boat deck to allow the occupant to help in the steering and manoeuvring. The rail has five sliding surfaces, the top one of which (2) acts as the propelling surface over which the driving wheel (10) passes. The upper side surface cooperate with the supporting rollers (7) of the undercarriage and the lower sides cooperate with the stabilising rollers (8) which prevent the set from being unhooked from the rail.</p> |
