Abstract:
A rim and a method for manufacturing a rim in particular for bicycles in which first a rim body is manufactured having a hollow space with a radially outer and a radially inner hollow-space wall. The radially outer hollow-space wall has a diameter matched to the diameter of a tube tire and the radially inner hollow-space wall has a diameter matched to the diameter of a wire tire.
Abstract:
A wheel rim includes an annular rim body that has an annular base wall, a pair of annular side walls, and a stop unit. The annular side walls extend respectively from lateral edges of the annular base wall. Each annular side wall includes a hollow segment and a connecting segment that interconnects the hollow segment and the annular base wall. Each hollow segment has an inner wall portion, an outer wall portion, and a tire bead retaining part projecting from the inner wall portion toward the other one of the annular side walls. Each inner wall portion is adapted for contacting a respective one of tire beads of a tire and cooperates with the stop unit and the respective tire bead retaining part to retain the respective tire bead.
Abstract:
A rim (1) for a bicycle wheel, having a body (5) with a substantially annular extension and a radially outer portion (6a) shaped for coupling with a tire is disclosed. The radially outer portion (6a) includes an annular bottom wall (12) provided with a hole for an inflation valve, and the annular bottom wall (12) defines a central annular recess (20) and two side annular portions (24) arranged on axially opposite sides with respect to the central annular recess (20). The recess (20) includes, on at least one side, and in at least one circumferentially distal area from the hole with reference to a cross section of the rim (1), a radially inner surface (26) and a radially outer surface (28). The radially outer surface (28) has a different bending radius than that of the radially inner surface (26).
Abstract:
A bicycle wheel rim having rim walls joined at their proximal ends by an inner annular bridge, an annular outer bridge disposed at the approximate midpoint of the rim walls, and a vertical beam disposed between the outer and inner bridges.
Abstract:
The rim, made from metal from a blank that is extruded, shaped into circular shape and closed upon itself through jointing between the ends of the blank, has a pair of wings connected by at least one bridge, and the axial distance between the wings at the jointing area is greater than the axial distance between the wings at the areas far from the jointing area.
Abstract:
A composite rim (1) for a bicycle wheel (60). The rim has at least one braking surface (20) and a wear indicator (40) that indicates when a predetermined level of wear has been reached at the braking surface (20). The wear indicator (40) is arranged in the rim (1) so that its does not affect the outer surface of the rim (1) or weaken its mechanical strength.
Abstract:
The rim spoke positioning pocket is a single metal plate placed in a cylindrical shape. One embodiment is coiled, and another embodiment is an expanded cylinder. A through hole is placed in the center of the positioning pocket, and the bottom has claws that are circular in shape and expandable outward. The inside surface corresponds to the claw shape to received a spoke tip connector, and the top of the positioning pocket is a straight opening. One side of the positioning pocket forms a connecting part by a coiled metal plate. The rim spoke positioning pocket for a bicycle or motorcycle can be made with simple steps and a low cost, which is better for mass production.
Abstract:
Vehicle wheel, with symmetry of revolution, including a disc and a rim, the rim including a first and a second seat which seats are designed to receive and to hold a first and a second bead of the tire, each seat having a substantially frustoconical bottom locally coinciding with a cone of revolution coaxial with the rim and open towards the other seat, a safety hump extending the bottom of the seat towards the other seat, and an external lip extending the bottom of the seat in the direction away from the other seat, the maximum diameter of the first seat being less than the maximum diameter of the second seat, characterized in that each seat includes, on the side facing the other seat, an adjacent circumferential groove and in that the connecting region where the disc and the rim meet is connected to the said rim on the second seat side.
Abstract:
A bicycle rim is configured with an annular metallic rim, a plurality of individual reinforcement members and at least one adhesive attachment material. The annular metallic rim has an annular tire attachment portion adapted to have a tire mounted thereon, and a spoke attachment portion with a plurality of spoke openings. The individual reinforcement members overlie discrete exterior surface areas of the spoke attachment portion surrounding the spoke openings. The at least one adhesive attachment material overlies the individual spoke reinforcements and exterior areas of the spoke attachment portion adjacent to the reinforcement members.
Abstract:
The rim spoke positioning pocket is a single metal plate placed in a cylindrical shape. One embodiment is coiled, and another embodiment is an expanded cylinder. A through hole is placed in the center of the positioning pocket, and the bottom has claws that are circular in shape and expandable outward. The inside surface corresponds to the claw shape to received a spoke tip connector, and the top of the positioning pocket is a straight opening. One side of the positioning pocket forms a connecting part by a coiled metal plate. The rim spoke positioning pocket for a bicycle or motorcycle can be made with simple steps and a low cost, which is better for mass production.