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US 6,199,449 B1Granted
Bicycle crank system
OwnerJeffery M. Harringtoninventor
Life of this patent
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OwnerJeffery M. Harringtoninventor
Estimating the term…
A bicycle crank assembly includes a spindle connection arrangement for connecting a first and second crank arm to a bicycle frame. The first crank arm includes a first portion of the spindle and the second crank arm includes a second portion of the spindle. The first and second spindle portions are connected to one another using two spaced apart bearing surfaces that provide a durable yet easily disassemblable spindle. The crank assembly also includes a removable chain ring and a chain ring adjuster for adjusting the position of the chain ring along the rotational axis of the spindle in order to allow the chain ring to be properly aligned with other components of the bicycle. In one embodiment, the assembly includes variable length crank arms that increase the ground clearance of the crank assembly and improve the leverage provided by the crank assembly during the downward stroke of the crank assembly. In another embodiment, the crank assembly includes a pedal connection arrangement for attaching a bicycle shoe to a pedal.
An arrangement for interconnecting a drive member and a driven member such that the drive member is able to rotationally drive the driven member about a given rotational axis, the arrangement comprising:
A spline pin assembly for use in a spline arrangement for interconnecting a drive member and a driven member such that the drive member is able to rotationally drive the driven member about a given rotational axis, the spline arrangement including a drive member engaging surface located on the drive member and a driven member engaging surface located on the driven member, the driven member engaging surface being configured to mate with the drive member engaging surface, the driven member and the drive member having at least one tapered bore formed into their engaging surfaces, the tapered bore having a longitudinal axis that extends along the engaging surfaces of both the drive member and driven member and the tapered bore having a cross sectional shape that tapers along the length of the longitudinal axis of the tapered bore, the tapered bore being formed into the engaging surfaces of the drive member and driven member with a portion of the cross sectional shape of the tapered bore, along its entire longitudinal length, formed into the drive member engaging surface and with a portion of the cross sectional shape of the tapered bore, along its entire longitudinal length, formed into the driven member engaging surface, the spline pin assembly comprising:
Dependencies are inferred from the claim text.