Devices enabling shifting of gears on bicycles
AssigneeB. G. Innovation (S.A.R.L.)
InventorsJean-Pierre Lacombe, Jean-Pierre Mercat
Life of this patent
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Abstract
Gear shifting device for a cycle having a chain and pinion transmission is provided, which includes a mobile gear shift assembly adapted to laterally displace the chain for enabling passage from one gear to another gear; transformation elements for transforming rotation of at least one pivoting gear into a lateral displacement of the mobile gear shift assembly; and a control mechanism for controlling lateral displacement of the mobile gear shift assembly. Further, the gear shifting device can include an indexing mechanism to further ensure exact positioning of the gears.
Claims20
Gear shifting device for a cycle having a chain and pinion transmission, comprising:
- a mobile gear shift assembly adapted to laterally displace the chain for enabling passage from one gear to another gear;
- transformation means for transforming rotation of at least one pivoting gear into a lateral displacement of said mobile gear shift assembly;
- and
- control means for controlling lateral displacement of said mobile gear shift assembly.
Dependencies are inferred from the claim text.