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US 2003/0171176 A1Published application
Bicycle rear derailleur
AssigneeShimano Inc.
InventorsSatoshi Shahana, Shinya Oseto, Kazuhiro Fujii
Life of this patent
Estimating the term…
Abstract
A derailleur includes a base member for attachment to a bicycle frame and a movable member supporting a chain guide such that the chain guide moves laterally to shift a chain among a plurality of gears. The base member has a laterally inner surface and a laterally outer surface, and it includes a projection extending laterally outwardly for engaging a corresponding recess in the frame.
Claims22
A derailleur comprising:
- a base member for attachment to a bicycle frame, wherein the base member has a laterally inner surface and a laterally outer surface, wherein the base member includes a projection extending laterally outwardly for engaging a corresponding recess in the frame;
- and
- a movable member supporting a chain guide such that the chain guide moves laterally to shift a chain among a plurality of gears.
A derailleur apparatus comprising:
- a frame member having an axle opening for receiving an axle therethrough and a slot in close proximity to the axle opening;
- a base member attached to a laterally inner surface of the frame member, wherein the base member has a laterally inner surface and a laterally outer surface, wherein the base member includes a projection extending laterally outwardly into the slot in the frame member;
- and
- a movable member supporting a chain guide such that the chain guide moves laterally to shift a chain among a plurality of gears.
1 more element
Dependencies are inferred from the claim text.