Bicycle front derailleur
AssigneeMaeda Industries, Ltd.
InventorJun Kobayashi
Life of this patent
Estimating the term…
Abstract
The present invention provides a bicycle front derailleur comprising: a movable member including an inner and outer guide plates opposed to each other to define a guide space through which a chain runs; the movable member being moved laterally of a bicycle for shifting the chain. For a purpose of preventing the chain from being caught or damaged by a chain entering edge of the movable member, a following techincal measure is employed: The movable member is provided with catch preventive measure for preventing the chain from being caught by the cain entering edge of the movable member when the chain enters the guide space between the inner and outer guide plates.
Claims12
A combination of bicycle parts comprising a chain and a front derailleur, the chain assuming a plurality of normal positions and an abnormal position above all of the normal positions, the front derailleur comprising:
- a movable member including inner and outer guide plates connected to each other by a top connecting portion and opposed to each other to define a guide space through which a chain runs, the movable member being moved laterally of a bicycle for shifting the chain;
- wherein
- the movable member is provided with catch preventive means located adjacent the top connecting portion for preventing the chain from being caught by a chain entering edge of the movable member when the chain enters the guide space at an abnormal position above the normal positions close to the top connecting portion.
A bicycle front derailleur comprising:
- a movable member including inner and outer guide plates connected to each other by a top connecting portion and opposed to each other to define a guide space through which a chain runs, the movable member being moved laterally of a bicycle for shifting the chain;
- the movable member being provided with catch preventive means located adjacent the top connecting portion for preventing the chain from being caught by a chain entering edge of the movable member when the chain enters the guide space;
- wherein the catch preventive means is formed not only on both of the inner and outer guide plates, but also on the connecting portion which connects the inner and outer guide plates with a predetermined spacing in between.
Dependencies are inferred from the claim text.