Bicycle rim with brake track

Abstract

A rim for a bicycle includes a radially outer tire-engaging portion, a radially inner spoke-engaging portion, a first sidewall and a second sidewall spaced apart from the first sidewall. A brake track is located on the first and second sidewalls including a plurality of grooves formed therein. Each of the plurality of grooves has a radially innermost point and a radially outermost point, wherein the radially outermost point is circumferentially aft of the radially innermost point relative to a forward circumferential travel direction of the rim.

Description

technical field [0001] The invention relates to a rim of a bicycle with brake rails. More specifically, the rim of the bicycle includes non-free surface features in the form of directional grooves. Background technique [0002] Bicycle wheels and rims have been in use for more than a century. Historically, bicycle rims have been made of wood, steel or aluminum. However, some bicycle rim manufacturers have begun to manufacture bicycle rims from other materials, such as lightweight fiber-reinforced composites (FRPs), comprising carbon fibers, glass fibers, and / or nylon fibers, for example, mixed in materials such as epoxy-based resins, phenolic-based resins and / or ester-based resins in cured resins. Of these composite rims, some have been made entirely of FRP composites (“full composite wheels”), while others have integrated components of different materials in addition to FRP composites (“multi-component rims”). [0003] Carbon fiber rim braking surfaces are difficult to ...

AI Technical Summary

Problems solved by technology

All of these coatings provide a strong friction surface, but are brittle, heavy and often require a high temperature application process that can damage the formed rim

These coatings also have geometric application issues, since they are post-applied, the braking surfaces are inherently imperfect and non-parallel due to lack of geometric control

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