Sprocket mechanism for a multistage bicycle

Details Sprocket mechanism for a multistage bicycle Sprocket mechanism for a multistage bicycle

1995-08-29

1996-08-13

Schoeppel, Roger J.

Endless belt power transmission systems or components

Positive drive pulley or guide roll

And additional coaxial surface for engaging same belt in...

F16H 5530

Patent

active

055450962

ABSTRACT:
A sprocket mechanism is provided. The sprocket mechanism includes two or more sprockets each having two groups of teeth formed in the peripheral portion and having another tooth formed between the two groups of teeth. The tooth disposed between the two groups of teeth has a smaller height than the other teeth, and has a straight and tapered surface for facilitating the shifting of the driving chain between the sprockets. The teeth of one of the groups of teeth each includes a pair of diagonal areas, each diagonal area having a tapered cutout portion for preventing the driving chain from shifting between the teeth of that group on each of the sprockets.

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