| 摘要 |
A shock absorber device (118) for bicycle rear wheel (106) suspensions and mounted operatively between the bicycle frame (102) and rear wheel (106). It includes a barrel valve (156) having variable width slots and/or at least one (indexed) hole wrapped around it and a shim (or reed) valve. The valve controls the hydraulic flow through those slots dependent upon whether it is the compression or return stroke and if the compression stroke whether it is in a high or low compression. The barrel valve can be rotated to reposition the slots relative to the shim valve (172) and thereby controllably vary the hydraulic resistance of the shock absorber between locked off, full on and a continuum of conditions therebetween. The barrel valve is adjusted by a handle (122) mounted directly on the device or a shifter mounted on the handle bars. Thereby the rider can adjust the hydraulic resistance of the shock absorber while he is riding the bicycle as riding conditions may warrant. The hydraulic resistance acts upon a pneumatic or (return) (internal or external) spring dampener whose pressure may be adjusted by the rider as desired riding the bicycle.
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