Abstract: The invention is directed to a rim such as a rim for a cycle. The rim includes a circularly extending hollow box-shaped element, in the form of a radial profile of revolution about a transverse axis, with two end surfaces of such element being joined end-to-end at a junction and affixed via a sleeve that is positioned within the hollow box-shaped element, on each side of the junction. The sleeve includes a pair of bearing portions, which exert an internal force inside and against the walls of the hollow box-shaped element, such force being generated by a relative spacing apart of the bearing portions via a spreading device, such as at least one spacing member. The spacing member can be a wedging member or a screw, configured and arranged in association with the bearing portions so as to direct the bearing forces along an essentially transverse direction toward the side walls of the rim. The invention is also directed to a wheel having such a rim, as well as to a method of manufacturing such rim and wheel.

Abstract: A wheel rim includes an annular rim body having a horizontally disposed rim axis. The rim body includes an annular base wall and opposite annular side walls extending from the annular base wall. Each annular side wall includes a reinforcing segment connected to the annular base wall, and a tire coupling segment extending from the reinforcing segment. The tire coupling segments of the annular side walls cooperatively define a tire retaining space. Each reinforcing segment has an inner wall portion, an outer wall portion disposed at a radially outer side of the inner wall portion and cooperating with the inner wall portion to define an annular chamber, and at least one connecting wall portion disposed in the annular chamber, and cooperating with the inner and outer wall portions to form at least one H-shaped wall structure and to configure the annular chamber into at least two annular holes.

Abstract: A wheel structure driven by an endless track belt tensioned around a drive wheel and an idler wheel thereof, comprising a plurality of supporting mid-roller wheels provided between the drive wheel and the idler wheel, a second endless belt being tensioned around this plurality of mid-rollers.