Bicycle wheel rim

Abstract

A cycle wheel rim having an axis and a median plane perpendicular to the axis, the rim comprising an upper bridge and at least one left lateral flange extending from the upper bridge and extended by a hook projecting radially towards the axis and axially towards the median plane, the upper bridge including a stop positioned on the same side of the left lateral flange in relation to the median plane, so that the left lateral flange, the hook, and the stop demarcate a left channel open upward, the amplitude of the opening of the channel, defined by the distance between the hook and the stop being less than the greatest amplitude of the channel. The depth of the channel, measured between the top of the hook and the bottom of the gutter, is less than 6.0 mm, or less than 5.0 mm, the front surface of the hook comprising a first abutment surface and the front surface of the stop comprising a second abutment surface, the normal direction of the first abutment surface and the normal direction of the second abutment surface forming an angle between 75° and 105°.

Description

technical field [0001] The present invention relates to bicycle wheels; more particularly, the present invention relates to a new type of tire for bicycle wheels. The invention also relates to a rim intended to receive a new type of tyre. Background technique [0002] Bicycle wheels equipped with pneumatic tires have been in use since the beginning of the 20th century. Currently, there are two types of bicycle tires: tubular tires, often referred to as "boyau" and straight-sided tires (pneumatique à tringle), commonly referred to as "pneu". Both types of tires have their advantages and disadvantages. [0003] Document FR 778 744 discloses an inner tube. The inner tube consists of a fabric ring, which may be coated with rubber, which is sewn to each other on both sides to form a tore. An air cavity is inserted into the interior of the loop prior to suturing. Then, a tread (bande de roulement) is glued on the outside of the pipe ring. The inner tube is glued to the rim. ...

AI Technical Summary

Problems solved by technology

[0015] The weight disadvantage of wheels and straight-sided tires in general, and non-tubular wheels in particular, has the consequence that professional cyclists do not use straight tires on the road or track. Side tires, likewise, are rarely used when traveling by bike on the road without an air chamber

In fact, the use of wheels without air chambers is currently limited to the field of off-road cycling, where the weight of the equipment is not as critical as for road riding

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