A bicycle rim assembly includes a rim defining a central plane and comprising annular inner and outer walls. The outer wall includes first and second bead seats separated by a center well. First and second annular projections are spaced laterally from each other relative to the central plane and extend substantially radially outwardly from the outer wall. Each of the annular projections includes a radially outer face and a laterally inner face. Right and left covers are spaced from each other and are preferably coupled to the rim to cover at least a portion of the laterally inner face and the radially outer face of the first and second annular projections, respectively, and also the first and second bead seats, respectively. One or both of the right and left covers can be fiber reinforced. First and second pieces of tape can be overlapped and used to secure the covers to the rim.

A spoke attachment flange for a bicycle wheel hub and a method for mounting spokes on the flange are disclosed. The flange has an annular body with a plurality of seats for housing enlarged spoke heads. At least one seat has an access opening configured to allow the insertion of the enlarged head in the seat. An outlet opening on the annular body is configured to allow a stem of the spoke to exit from the seat. The access opening and the outlet opening are connected through a connection channel that extends from the access opening towards the outlet opening without reaching a radially outer surface.

A composite material body (10) includes a first material layer (20) and a second material layer (30) overlapping the first material layer (20). The first material layer (20) and the second material layer (30) are wound to form a flexible and circular rod. Impact absorption is effectively improved and impact resisting strength is enhanced because energy-absorber or damping material or its composition is attached into the composite material body (10). Technical characteristics, effects and objects of this invention are achieved thereby.

A composite material body (10) includes a first material layer (20) and a second material layer (30) overlapping the first material layer (20). The first material layer (20) and the second material layer (30) are wound to form a flexible and circular rod. Impact absorption is effectively improved and impact resisting strength is enhanced because energy-absorber or damping material or its composition is attached into the composite material body (10). Technical characteristics, effects and objects of this invention are achieved thereby.

A wheel for a vehicle is provided. The wheel has a rim configured for mounting a tire thereto. The wheel also has a rotary drive member that is integrally connected to the rim. The drive member is configured to be operatively connected to a motor of the vehicle.

A wheel with flexible spokes, including a rim and hub, and spokes between the rim and hub made of fibrous material that causes the spokes to be both lighter in weight and stronger than comparable steel spokes. The spokes are also flexible and resilient such that they can bend while retaining their integrity and strength.

The present invention relates to an energy transfer system, in particular in the form of an energy efficient wheel for use with a vehicle such as a bicycle, which energy transfer system is operable to convert potential energy in the form of the load applied by the weight of the person on the vehicle into kinetic energy in the form of driving torque applied to the wheel, the system including an inner hub and an outer hub eccentrically coupled to the inner hub, in addition to a rim connected to the outer hub via an array of spokes, wherein an actuator comprising a pair of flanges extends radially outwardly from the inner hub and an array of lever arms are hingedly mounted to the outer hub and engaged by the actuator such as to be hingedly displaceable by the actuator in response to relative movement between the inner and outer hubs, and a spring captured between each lever arm and one of the spokes.

The present invention discloses a carbon fiber spoke and a manufacturing method thereof. The carbon fiber spoke includes a spoke body made of carbon fiber, a screw bushing that is fit and connected with rim and a nut cap bushing that is fit and connected with the hub. Two end parts of the spoke body are provided with solid joints. The outside surface of the solid joint is provided with a first tapered section. The screw bushing and the nut cap bushing are provided with penetrable mounting holes. The hole wall surrounding the mounting hole is provided with a second tapered section. The mounting hole of the screw bushing and the mounting hole of the nut cap bushing are respectively fixed to the two solid joints; the second tapered section of the mounting hole and the first tapered section of the solid joint are fit and connected together.

An aerodynamic bicycle rim, the bicycle rim comprising a circumferential clincher portion adapted to seat a clincher bicycle tire, a nose a set of sidewalls, each sidewall extending radially from the nose to a respective circumferential outer edge to form a rim body having a maximum rim body width that is greater than a maximum width of the clincher bicycle tire and spaced radially inward of the clincher portion and radially outward from a centerline of the rim body. The aerodynamic bicycle rim seats the clincher bicycle tire to form an asymmetrical cross-sectional shape in which the widest part of the rim body is spaced from a centerline of the asymmetrical cross-sectional shape and there is a tangent line tangent to the clincher bicycle tire and a sidewall of the set of sidewalls, the tangent line tangent to the sidewall radially inward from the respective circumferential outer edge.

A composite material body (10) includes a first material layer (20) and a second material layer (30) overlapping the first material layer (20). The first material layer (20) and the second material layer (30) are wound to form a flexible and circular rod. Impact absorption is effectively improved and impact resisting strength is enhanced because energy-absorber or damping material or its composition is attached into the composite material body (10). Technical characteristics, effects and objects of this invention are achieved thereby.