Bicycle wheel travel path for selectively applying chainstay lengthening effect and apparatus for providing same
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United States of America Patent
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-
Mar 27, 2001
Grant Date -
N/A
app pub date -
Mar 13, 1998
filing date -
Jan 25, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A rear suspension system for a bicycle. The system directs the rear wheel along a predetermined, S-shaped path as the suspension is compressed. The path is configured to provide a chainstay lengthening effect only at those points where this is needed to counterbalance the pedal inputs of the rider; at those points in the wheel travel path where there is a chainstay lengthening effect, the chain tension which results from the pedal inputs exerts a downward force on the rear wheel, preventing unwanted compression of the suspension. The system employs a dual eccentric crank mechanism mounted adjacent the bottom bracket shell to provide the desired control characteristics.
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