A collapsible wheel having a plurality of wheel sections. Each wheel section has at least a rim portion, a hub portion defining a rotational axis, and a pair of spokes. Each wheel section supports one or more spokes that extend from the hub portion and connect to one or more of the rim portions. The wheel sections rotate relative to each other about the rotational axis from a collapsed configuration to an expanded position, defining a central plane of the wheel. The rim portions are oriented generally perpendicular to the central plane.

A bicycle component comprises a first structural member made of a conducting material, an electrical insulation layer provided to the first structural member, and a second structural member configured to be attached to the electrical insulation layer by adhesive.

A bicycle component comprises a first structural member made of a conducting material, an electrical insulation layer provided to the first structural member, and a second structural member configured to be attached to the electrical insulation layer by adhesive.

Vehicle rim for mounting of a tire, comprising: an axially central part (20) comprising a disc; two lateral parts (31, 32), at least one of the lateral parts being separate from the axially central part, each of the lateral parts having a rim seat to receive a bead of a tire, the axially central part and the two lateral parts being made from a rigid matrix; an intermediate part (41, 42) that forms the only mechanical link between the axially central part and each lateral part that is separate from the axially central part, this intermediate part being made of a flexible matrix, the Young's modulus of uniaxial extension of the flexible matrix being greater than and equal to 50 MPa and less than or equal to 400 MPa; wherein the Young's modulus of uniaxial extension of the rigid matrix is greater than or equal to 5 GPa.

Vehicle rim for mounting of a tire, comprising: an axially central part (20) comprising a disc; two lateral parts (31, 32), at least one of the lateral parts being separate from the axially central part, each of the lateral parts having a rim seat to receive a bead of a tire, the axially central part and the two lateral parts being made from a rigid matrix; an intermediate part (41, 42) that forms the only mechanical link between the axially central part and each lateral part that is separate from the axially central part, this intermediate part being made of a flexible matrix, the Young's modulus of uniaxial extension of the flexible matrix being greater than and equal to 50 MPa and less than or equal to 400 MPa; wherein the Young's modulus of uniaxial extension of the rigid matrix is greater than or equal to 5 GPa.

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.

Disclosed is a foldable wheel defined about an axis of rotation of the wheel, which includes a closed loop made up of at least two links and, each link being substantially in the shape of a ring sector of section as defined in a plane perpendicular to the axis of rotation of the wheel that in the shape of a trapezoid including two non-parallel faces and, a major base, and a minor base; a unit for mounting the links and to pivot about a pivot axis, including a bearing having two portions and, respectively a pivot pin and a rotary housing, the pin being pivotally mounted in the pivot housing, the male and female bearing portions and being at two points situated in the proximity of the apex of the V-shape, the V-shape being defined by the shape formed by the two facing non-parallel faces of the two links.

Disclosed is a foldable wheel defined about an axis of rotation of the wheel, which includes a closed loop made up of at least two links and, each link being substantially in the shape of a ring sector of section as defined in a plane perpendicular to the axis of rotation of the wheel that in the shape of a trapezoid including two non-parallel faces and, a major base, and a minor base; a unit for mounting the links and to pivot about a pivot axis, including a bearing having two portions and, respectively a pivot pin and a rotary housing, the pin being pivotally mounted in the pivot housing, the male and female bearing portions and being at two points situated in the proximity of the apex of the V-shape, the V-shape being defined by the shape formed by the two facing non-parallel faces of the two links.

Disclosed is a movable object which includes a wheel assembly including a main rotary part that rotates about a first rotational axis and a variable rotary part that moves relative to the main rotary part in a direction not aligned with the first rotational axis. The variable rotary part rotates at the same angular velocity as a main angular velocity when the main rotary part rotates, the main angular velocity being an angular velocity of the main rotary part.