A rim for a vehicle wheel having an inner and an outer rim flange, an inner and an outer rim shoulder, a rim well with well base, inner well flank and an outer well flank, a transition section and an inner hump with a hump peak. The rim is having specific material thickness in the area of the transition section. In order to improve wheels in terms of weight minimization and noise development, the transition section comprises at least one stiffening section with a radially offset wall section, the maximum radial offset of which to the adjoining transition section is greater than the material thickness in the transition section. The stiffening section has a diameter, being equal or greater than the diameter on the well base and smaller than diameter of the hump peak.

A method for producing a motor vehicle rim made of an aluminum alloy for a wheel of a motor vehicle, the motor vehicle rim having a rim base limited on opposite sides by an outer horn and an inner horn, a hub with a central recess and a hole circle, and a rim center connecting the rim base and the hub to one another. The motor vehicle rim is produced in one piece and continuously in a casting mold by die casting of a casting material, the casting material being the aluminum alloy.

A rim for a bicycle wheel includes a radially outer tire-engaging portion, a first sidewall, and a second sidewall spaced apart from the first sidewall. The first and second sidewalls may extend radially inward of the radially outer tire-engaging portion. The rim includes a radially inner portion having at least one asymmetric protrusion.

A rim (5) for a bicycle wheel having a body (20) with a substantially annular extension with a radially outer portion (22) shaped for coupling with a tire is disclosed. The radially outer portion (22) has a hole (39) for an inflation valve. The radially outer portion (22) also includes, at the hole (39) and/or in an area proximal to the hole (39), at least one cross section having a different shape from that at an area distal from the hole, so as to form at least one second surface discontinuity (35) along the annular extension of the radially outer portion (22). The second discontinuity (35) makes it easier to assemble to wheel and allows an optimal coupling to be made between the rim (5), inflation valve, and tire, in the case of a tubeless wheel, and between rim (5), air chamber and tire, in the case of a wheel with an air chamber.

A wheel construction including a rim, the rim including: an inner flange (16) and an outer flange (18), a central well (20) positioned between the flanges, a pair of bead seats (22, 24), one being positioned adjacent each flange, each bead seat being connected to the respective flange by a flange connection portion, and being connected to one of a pair of side parts (30, 32), each connected to the central well by a well connecting portion (34, 36), wherein at least one of the side parts includes a convex portion (40, 42) including a convex surface that extends radially beyond the axially inner end of the bead and a curved portion (50, 52), and wherein at least one of the inner flange and the outer flange includes an extended portion (17, 19) which extends radially inwardly to a free end.

A wheel includes a rim having inner and outer flanges. A first end of each flange is positioned axially outwardly relative to the second end. A pair of bead seats are positioned one adjacent each flange, and each has an axially outer end connected to a second end of its flange by a flange connecting portion, and an axially inner end connected to one of a pair of side parts. Each side part is positioned between a central well and one of the inner and outer flanges, and connected to the well by a well connecting portion. The outer end of each bead seat is positioned radially outwardly relative to bead seat inner end. At least one of the flanges includes an extended portion which extends radially inwardly, such that a free end of the extended portion is positioned radially inwardly relative to the first end of the respective flange.

A wheel for vehicles is provided. The wheel has a rim of sheet metal having on its axially outer side an outer flange, an outer bead seat, an outer retaining hump, and a rim well connected to the outer bead seat through the outer retaining hump. The wheel has a disc of sheet metal having a cover part and a connection part axially protruding from the cover part. The connection part of the disc is fixed to a radially inner surface of the rim. At least one formation of additive material is formed on at least one of the rim and the disc, the at least one formation defining a steep thickness change with respect to a surrounding region of sheet metal.

The present invention explains a process for manufacturing tubeless vehicle wheel without welding using a hoop 100 having an outboard end 101, a centre region 102, an inboard end 103. The process includes spinning the outboard end 101 to obtain a disc region 202, spinning disc end 203 to obtain preform nave region 301. Forming the disc region 202 to obtain a disc profile 401 and a nave region 403, forming the centre region 102, inboard end 103 to obtain a straight rim profile 402. Spinning and forming outer end 405 of the straight rim profile 402 to obtain an outboard flange 502a and spinning the straight rim profile 402 to obtain a concave rim profile 601a with a preform inboard flange 602a. Spinning the concave rim profile 601a to obtain bead seats 701a, well region 703a and, forming the preform inboard flange 602a to obtain an inboard flange 704a.

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.

A non-metallic rim for a wheel which may be used for motorised vehicles. The rim has a barrel, a first flange, a second flange, a first bead seat, a second beat seat and a primary structural component. The primary structural component extends into at least the first flange and the barrel, and the primary structural component is capable of bearing the majority of the radial and/or lateral load that is borne by the rim during usage. Additionally, the rim has at least a portion of the first bead seat spaced apart from the primary structural component and/or has a protective insert in between the outer face of the first flange and the primary structural component.