| 摘要 |
A handle (19) is used to pivot at least one drive lever (15) backwards and forwards about a pivot axle (39), coupled to the drive shaft (31) via a freewheel in such a way that when the lever is pivoted in the forwards direction the lever and shaft are coupled together, when the lever is pivoted in the reverse direction the lever and shaft are coupled together, when the lever is pivoted in the reverse direction the lever and shaft become uncoupled. An Independent claim is also included for a wheelchair fitted with this drive mechanism.
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