A rear wheel (1) for a powered two-wheeler has a hub (3), a rim (4) which has a rim well (5) and two rim flanges (6) terminating the rim (4) on both sides, at least one connecting element (7) for connecting the hub (3) to the rim (4), an interface (8) for attaching the rear wheel (1) to the two-wheeler, and receptacles (9, 10) provided on both sides of the rear wheel (1) for receiving a brake disc (11) and/or a drive element (12) serving to rotate the rear wheel (1). The receptacles (9, 10) on both sides are identical to one another.

A rear wheel (1) for a powered two-wheeler has a hub (3), a rim (4) which has a rim well (5) and two rim flanges (6) terminating the rim (4) on both sides, at least one connecting element (7) for connecting the hub (3) to the rim (4), an interface (8) for attaching the rear wheel (1) to the two-wheeler, and receptacles (9, 10) provided on both sides of the rear wheel (1) for receiving a brake disc (11) and/or a drive element (12) serving to rotate the rear wheel (1). The receptacles (9, 10) on both sides are identical to one another.

A wheel assembly is disclosed, the wheel assembly including a rigid wheel and an airless tire mounted on the wheel. A portion of the tire is separated radially from the wheel by a space and is configured to flex inwardly toward the wheel when subject to ground engaging pressure. A spacer is interposed between the wheel and the portion of the tire separated radially from the wheel by a space and is configured to limit the inward flexing of the tire. The spacer may be permanently affixed to the wheel assembly or may be removably attached to the wheel assembly. The spacer may be adjustable between a first size and a second size.

A wheel assembly is disclosed, the wheel assembly including a rigid wheel and an airless tire mounted on the wheel. A portion of the tire is separated radially from the wheel by a space and is configured to flex inwardly toward the wheel when subject to ground engaging pressure. A spacer is interposed between the wheel and the portion of the tire separated radially from the wheel by a space and is configured to limit the inward flexing of the tire. The spacer may be permanently affixed to the wheel assembly or may be removably attached to the wheel assembly. The spacer may be adjustable between a first size and a second size.

A tool device and its use for manufacturing a bicycle rim, having opposite rim flanks, a rim well and a rim base and rim flanges configured on the radially outwardly ends of the rim flanks, wherein the tool device includes two molding devices and a circular device. The circular device forms the rim well and the axially inwardly oriented surfaces of the rim flanges. The circular device includes an annular unit of a less elastic material and at least one cover of a more elastic material. Alternately, the molding devices each include a molding unit of a less elastic material and at least one cover of a more elastic material, for attachment thereto. The thickness of the cover is between one eighth of the minimum wall thickness of the rim well of the rim manufactured and eight times the minimum wall thickness of the rim well of the rim manufactured.

A tool device and its use for manufacturing a bicycle rim, having opposite rim flanks, a rim well and a rim base and rim flanges configured on the radially outwardly ends of the rim flanks, wherein the tool device includes two molding devices and a circular device. The circular device forms the rim well and the axially inwardly oriented surfaces of the rim flanges. The circular device includes an annular unit of a less elastic material and at least one cover of a more elastic material. Alternately, the molding devices each include a molding unit of a less elastic material and at least one cover of a more elastic material, for attachment thereto. The thickness of the cover is between one eighth of the minimum wall thickness of the rim well of the rim manufactured and eight times the minimum wall thickness of the rim well of the rim manufactured.

A multi-piece rim structure for a wheel includes a rim base 10, a bead seat ring 20 (ring member) and a lock ring 30. The bead seat ring 20 receives a load in a radial direction and an axial direction from a bead portion of a tire. An annular ridge 35 of the lock ring 30 can be received in an annular lock ring groove 15 of the rim base 10. A receiving groove 15a is formed in an inner surface of the lock ring groove 15 of the rim base 10. A sacrificial anticorrosion material 80 is embedded in the receiving groove 15a. The sacrificial anticorrosion material 80 includes metal such as zinc and aluminum that has a greater ionization tendency than iron that is a base material of the rim base 10 and the lock ring 30. Corrosion of the rim base 10 and the lock ring 30 can be suppressed by ionization of the sacrificial anticorrosion material 80.

A multi-piece rim structure for a wheel includes a rim base 10, a bead seat ring 20 (ring member) and a lock ring 30. The bead seat ring 20 receives a load in a radial direction and an axial direction from a bead portion of a tire. An annular ridge 35 of the lock ring 30 can be received in an annular lock ring groove 15 of the rim base 10. A receiving groove 15a is formed in an inner surface of the lock ring groove 15 of the rim base 10. A sacrificial anticorrosion material 80 is embedded in the receiving groove 15a. The sacrificial anticorrosion material 80 includes metal such as zinc and aluminum that has a greater ionization tendency than iron that is a base material of the rim base 10 and the lock ring 30. Corrosion of the rim base 10 and the lock ring 30 can be suppressed by ionization of the sacrificial anticorrosion material 80.

Segmented wheels offer advantages in storage space of closely packed segments as compared to whole wheels. Individually damaged or worn segments may be replaced in the field with little or no need for jacks or cranes to support the rest of the vehicle, and entire wheels may be replaced or reconfigured from one tread type to another by swapping out segments not in contact with the ground and then driving the vehicle a distance which is a fraction of the circumference of its wheels to expose the remaining segments for retrofit. Segments may be freely supported by rigid or compliant spokes or may be bound together by straps or designed to interlock with adjacent segments. Embodiments of the invention may be made in any size range including applications for bicycles, agricultural machinery, cars, trucks and mining machinery and vehicles.

Segmented wheels offer advantages in storage space of closely packed segments as compared to whole wheels. Individually damaged or worn segments may be replaced in the field with little or no need for jacks or cranes to support the rest of the vehicle, and entire wheels may be replaced or reconfigured from one tread type to another by swapping out segments not in contact with the ground and then driving the vehicle a distance which is a fraction of the circumference of its wheels to expose the remaining segments for retrofit. Segments may be freely supported by rigid or compliant spokes or may be bound together by straps or designed to interlock with adjacent segments. Embodiments of the invention may be made in any size range including applications for bicycles, agricultural machinery, cars, trucks and mining machinery and vehicles.