A composite rim is used in spoked wheels, such as bicycle wheels. The composite rims has molded-in spoke holes. The composite rim is manufactured using a unique fabricating technique. The construction of the composite rim dramatically improves the bearing and loading strength of the composite rim over prior composite rims, which drill the spoke holes therein after fabrication of the rim hoop.

A wheel assembly is provided that includes a structure defining a wheel portion configured to receive a portion of a tire. The wheel assembly further includes a structure of the wheel portion defining an air channel from a face of the wheel portion to an area that receives the portion of the tire, an end of the air channel proximate to the face being configured to receive a valve, where the structure is further configured to receive a corrosion mitigation device within the air channel.

A rim, having a rim body with rim flanks, a rim well and a rim base, in which the flanks abut in the radially most inwardly point, and with opposed rim flanges, each extending from one of the flanks up to a radially most outwardly point, so that the rim flanges form opposed side walls with the flanks. The widest spot of the rim body lies beneath the rim well and above a horizontal centerline. The width in the widest spot is at least one quarter larger than a clear rim width between the rim flanges. The side walls show a defined curvature shape with an inflection point which is disposed between the radially most outwardly point and the widest spot and lies external of the rim flange. In the inflection point, a concave curvature makes a transition to a convex curvature lying between the inflection point and the widest spot.

A bicycle rim for bicycles with a rim body with a visible surface perceptible in proper operation, wherein a supporting structure of the rim body is made from fibrous composite materials of prepreg layers is disclosed. The rim body includes rim flanks disposed opposite one another, a rim well, and a rim base. The visible surface is formed by a thin non-woven layer on the supporting structure, so as to form directly during manufacturing, an optically appealing, visible surface on the rim body, involving no postprocessing. The non-woven layer forms on the rim body, an outer layer of a composite layer. The composite layer includes a prepreg layer and the non-woven layer.

The invention provides a rim for a braked aircraft wheel, the rim comprising an outer circular portion (103) terminated at its ends by flanges (106a, 106b) for receiving a tire, the outer circular portion being connected by a wheel disk (105) to a hub (104) for fitting on an undercarriage axle in order to rotate about an axis of rotation coinciding with a central axis (X) of the rim, the rim being designed to receive a tire on the outside of the outer circular portion and a brake on the inside, on one side of the wheel disk. According to the invention, the outer circular portion (103a) on the side of the wheel disk that is to receive a brake presents, in a plane containing the central axis of the wheel, a profile that has two slopes ?, ? relative to a direction parallel to the central axis on going from the wheel disk to the corresponding flange, and flaring towards the flange.

The coefficient cycling aero foil system is designed to reduce drag and turbulence from a tire and spokes used to support a bicycle wheel. The system is integrated into a rim on a bicycle wheel which allows for increased forward momentum by cutting drag and reducing wheel turbulence that occurs during the rotation of a bicycle wheel. The foils may be strategically placed for optimum aerodynamic wind flow and are precisely angled to force wind past the foil creating increased forward momentum.

An auxiliary air chamber member includes connecting portions recessed into an auxiliary air chamber from an upper surface portion and a lower surface portion to partially connect the upper surface portion and the lower surface portion. A non-connecting portion of the lower surface portion excluding the connecting portions is a curved surface corresponding to a shape of an outer peripheral surface of a well portion. The connecting portions are arranged separated equally in a wheel circumferential direction and include a first connecting portion on one side and a second connecting portion on the other side arranged in parallel in a wheel width direction. One of the connecting portions is disposed at a position in an offset plus direction and the other is disposed at a position in an offset minus direction with reference to a cross-sectional center of gravity in the wheel width direction.

According to the present invention, a wheel width direction (Y) cross-section of a well portion (11A) comprises: a hump portion (H1) and a hump portion (H2) that protrude to the outside (Z1) in a wheel radial direction (Z); and a curved surface (11s) that connects hump portion (H1) and hump portion (H2) and is sunken to the inside (Z2) in the wheel radial direction (Z). The curved surface (11s) is formed as a series of circular arcs (11e, 11f, 11g) that have centers of curvature (O1, O2, O3) that are further to the outside (Z1) in the wheel radial direction (Z) than the curved surface (11s).

An auxiliary air chamber member includes: a lower surface arranged on the outer circumferential surface side of a well section; an upper surface arranged outward from the lower surface; an auxiliary air chamber formed between the upper surface and the lower surface; a pair of edges that join the lower surface and the upper surface on both sides in the width direction and that engage with the well section; and a plurality of joining sections that partially join the upper surface and the lower surface as a result of being sunk into the interior of the auxiliary air chamber from the upper surface and the lower surface between one edge and the other edge along the wheel width direction Y. The joining points of the individual joining sections are arranged on the strong axis of the cross-sectional main axis of the auxiliary air chamber member in an axial right section.

A sub-air chamber member includes: a lower surface portion disposed proximate to the outer circumferential surface of the well portion; an upper surface portion disposed radially outside of the lower surface portion; a pair of edge portions engaging with the well portion. A space portion is positioned above the upper surface portion, the space portion being formed by a part of the upper surface portion and an inner wall surface of the well portion. A strong axis of principal axes of a section of the sub-air chamber member perpendicular to an axis of the sub-air chamber member is inclined by a first predetermined angle relative to a wheel width direction Y.