Bicycle wheel travel path for selectively applying chainstay len

Details Bicycle wheel travel path for selectively applying chainstay len Bicycle wheel travel path for selectively applying chainstay len

1995-11-15

1997-05-13

Johnson, Brian L.

Land vehicles

Wheeled

Occupant propelled type

280283, B62K 2500

Patent

active

056285248

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.

REFERENCES:
patent: 4671525 (1987-06-01), Ribi
patent: 4789042 (1988-12-01), Pitts
patent: 4789174 (1988-12-01), Lawwill
patent: 5121937 (1992-06-01), Lawwill
patent: 5306036 (1994-04-01), Busby
patent: 5409249 (1995-04-01), Busby
patent: 5452910 (1995-09-01), Harris

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