Telescoping-type front fork bicycle suspensions

Details Telescoping-type front fork bicycle suspensions Telescoping-type front fork bicycle suspensions

1994-04-01

1997-05-06

Johnson, Brian L.

Land vehicles

Wheeled

Occupant propelled type

280279, 280280, B62K 1930, B62K 1938

Patent

active

056263554

ABSTRACT:
This invention relates to front fork, telescoping type suspension systems for bicycles. The main focus of the invention is the brake bridge assembly, the fork crown assembly and the joinder of these assemblies to form the fork suspension. The brake bridge assembly serves two main functions: 1) it provides a stiff structural connection between the right and left telescoping struts, to reduce wheel wobble during high speed wheel impacts, and 2) it provides a structural support for the brake cable stop. The invention provides for increased stiffness and lower stresses in the brake bridge, which translates into improved directional stability for the front wheel, less displacement for the brake cable stop .(when the brake loads are applied) and improved fatigue life for the assembly. It also provides for a simpler and less expensive means for mounting the brake bridge to the fork assembly. The invention also encompasses the fork crown producing a lightweight structure with high torsional and bending rigidity. The connections of the stanchions to the crown are achieved through a variety of methods including, (a) interference fit and bonding, (b) collet assembly and (c) "pinch-bolt" connections.

REFERENCES:
patent: 5238259 (1993-08-01), Wilson et al.
patent: 5284352 (1994-02-01), Chen

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