| 摘要 |
A device comprising a handlebar attached to a support frame by drive actuation means comprising a shaft or ratchet mechanism operationally connected to a vehicle drive wheel and by steering actuation means comprising a shaft connected to a vehicle wheel. Reciprocating rotational movement of handle bar about a drive pivot axis actuates the shaft or ratchet mechanism. Reciprocating rotational movement of the handlebar about a steering axis actuates the shaft. The drive pivot axis and the steering axis are substantially perpendicular to each other. In a preferred embodiment the drive actuation means includes a three ratchet type device cassette, one ratchet type device inside one in the opposite direction and two in the parallel direction. |
