| 摘要 |
The invention concerns apparatus for actuating a brake on a bicycle by kicking back on the pedal cranks where there is provided a clamping or switching device which, as the pedal cranks are being kicked backwards, establishes a frictional connection between, on the one hand, the pedal cranks, or the pedal crank shaft, and, on the other hand, at least one force transmission member which leads to at least one mechanical wheel brake of the bicycle. <IMAGE>
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