Sram Deutschland Gmbh

Sachs-huret Sa

Christian Desenclos

Raymond Florczyk

Marcus Auer

Arndt Gockisch

Sinoquet Regis

A device for switching a chain on different sprockets of a pedal bearing mounted to a seat tube of a frame of a bicycle. The chain switching device includes a cage which can be economically manufactured in a plurality of constructions and readily mounted on different bicycle frames with different angles between a seat tube and a chain brace in order to achieve optimum operating angles with appropriately modified cages. The different cage constructions are manufactured from a single sheet metal blank and have brackets arranged at different positions and of different lengths which are formed by appropriately positioning their bending edges to attach the cage to a parallel guide device.

Chain switching device for bicycles

The device permits the control of a derailleur by means of a lever (9) with the use of indexation means which ensure a precise positioning of the lever in the various positions corresponding to the various gear ratios. It also permits the adjustment of the indexation pitch, so as to adapt it to freewheels having a different spacings or pitches between different sprocket pinions. For this purpose, positioning elements (19) may be shifted by a pitch selection element (21) so that the pitch between the various positions of the lever is modified.

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L'Heure, France

Christian Desenclos