Mechanical transmission for e.g. bicycle, has carrier tube supporting sliding gears that are supported on ring gears for driving central support gear, where ring gears are immobilized, one by one, by shift fingers for different speeds

摘要

The transmission has a carrier tube (2) arranged on a central axel (1) of a pedal and supporting sliding gears (3) of different diameters. The gears (3) are supported on ring gears (4) at the interior for driving a central support gear (5) of the pedal. The ring gears are immobilized, one by one, by shift fingers (6) for different speeds.