Bicycle wheel quick-release apparatus

Land vehicles: wheels and axles – Wheel – Hub

Patent

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Details

301111, 403146, 403372, 411434, B60B 2706

Patent

active

051657627

ABSTRACT:
A quick-release apparatus having improved features is used with a hub and axle assembly for attaching a bicycle wheel to the frame of the bicycle. The assembly includes a hollow hub for mounting a bicycle wheel and a hollow axle extending through the hub and rotatably mounting the hub. The axle has a pair of opposite ends which extend from opposite ends of the hub and are interfitted with lower tips of a pair of fork tines of the bicycle frame. A first improved feature is a protuberance on the body of a cam lever assembly serving as a locator which positively aligns the cam lever to pivotally move the cam lever to the proper engaged position and prevents the cam lever from being used as a wrench to rotate the drawbar shaft. The second improved feature is an adjustable nut assembly which can be easily preset to have the correct number of compression washers to impose the desired level of tensioning force on the drawbar shaft when the cam lever arm is moved to its engaged position. The third improved feature is a bifurcated structure on the cam lever serving as a locator of the proper position for the cam lever and that will require it to be placed on only one predetermined side of the bicycle.

REFERENCES:
patent: 4033627 (1977-07-01), Morroni
patent: 4079958 (1978-03-01), Segawa
patent: 4400038 (1983-08-01), Hosokawa
patent: 4763957 (1988-08-01), Poehlmann et al.
patent: 4770011 (1988-09-01), Constant
patent: 4789206 (1988-12-01), Ozaki
patent: 4805941 (1989-02-01), Downing et al.
patent: 4906053 (1990-03-01), Kawai
patent: 4964287 (1990-10-01), Gaul
patent: 4971397 (1990-11-01), Nichols et al.
patent: 5005390 (1991-04-01), Giannini et al.

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