An improved clamping mechanism to secure a tire between a bead ring and a wheel utilizing a bolt is provided. The bolt has a ball seat that pivots within an enlarged pilot hole in the bead ring as the bolt threads engage in threaded section of the wheel, pulling the bead ring toward the wheel. As the bead ring is tightened upon the wheel, eventually the bead ring contacts a fulcrum on the wheel, at which point the outer edge of the bead ring is leveraged against the tire bead bundle and pressing down the tire bead to lock it in place against the wheel. As the bead ring can pivot within the enlarged pilot hole around the bolt, the bolt is not stressed. Further, the wheel comprising a safety bead and non-skid coating on the inner wall of the wheel to prevent the wheel sliding around the wheel.

The tire comprises an outer ring structure with a tread, the outer ring structure comprising a first support ring and a second support ring, the first and second support rings being substantially coaxial around the tire axis; an inner ring structure, the inner ring structure comprising a first base ring and a second base ring, the first and second base rings being substantially coaxial around the tire axis; and a connecting structure effective to transfer load from the inner ring structure to the outer ring structure, the connecting structure including first and second spokes made of reinforced rubber that connect the first and second support rings to the first and second base rings.

A rim cover assembly having a waterproof structure according to an embodiment of the present invention includes a rim of which an outer wheel is surrounded by a tire, wherein a shaft passes through and is connected to a center of the rim, a cover coupled to the rim to seal an interior of the rim, tire separation prevention steps formed on the rim and the cover to prevent separation of the tire, and a bolt coupling portion which couples the cover and the rim, wherein the tire separation prevention steps include a first tire separation prevention step, which is integrally formed with the rim and protrudes from one side of the rim and a second tire separation prevention step integrally formed with the cover coupled to the other side of the rim, and the bolt coupling portion may be formed in the second tire separation prevention step.

An adapter for a rolling assembly having an axis of rotation (YY′), the rolling assembly comprising a tyre having two beads, and a rim having two rim bead seats, for each bead, provides the connection between the bead and the rim, the said adapter comprising an axially inner end connected to the rim, an axially outer end comprising an outer reinforcing element and intended to come into contact, via a substantially radial axially inner face, or bearing face, with a bead, a body connecting the axially outer end to the axially inner end so as to form a single piece, comprising at least one main reinforcement providing the connection between the outer reinforcing element and the inner reinforcing element, and comprising a substantially axial adapter seat intended to come into contact with a bead. The outer reinforcing element is completely axially on the outside of the bearing face, and the outer reinforcing element is a substantially annular structure, referred to as a bead wire, of polygonal section, comprising an individual metal wire of diameter D1, the said wire being coated in an elastomer composition and wound contiguously around a support at least three times in an axial direction and at least twice in a radial direction.

An adapter for a rolling assembly having an axis of rotation (YY′), the rolling assembly comprising a tyre having two beads, and a rim having two rim bead seats, for each bead, provides the connection between the bead and the rim, the said adapter comprising an axially inner end connected to the rim, an axially outer end comprising an outer reinforcing element and intended to come into contact, via a substantially radial axially inner face, or bearing face, with a bead, a body connecting the axially outer end to the axially inner end so as to form a single piece, comprising at least one main reinforcement providing the connection between the outer reinforcing element and the inner reinforcing element, and comprising a substantially axial adapter seat intended to come into contact with a bead. The outer reinforcing element is completely axially on the outside of the bearing face, and the outer reinforcing element is a substantially annular structure, referred to as a bead wire, of polygonal section, comprising an individual metal wire of diameter D1, the said wire being coated in an elastomer composition and wound contiguously around a support at least three times in an axial direction and at least twice in a radial direction.

In a rolling assembly comprising a tyre (P), an adapter (A) provides the connection between one of the beads (B) and the rim (J) of the rolling assembly, the adapter (A) comprising: a substantially axial body (11) comprising at least one main reinforcement (17) comprising one first (18) and one second (19) reinforcing ply each comprising reinforcers coated in elastomer composition referred to as skim rubber (31); a layer (30) of elastomer composition in a colour other than black, also referred to as coloured rubber, positioned as desired—in place of the skim rubber (31) with which the reinforcers of each ply are coated, or in place of the skim rubber (31) with which the reinforcers are coated and placed only on the exterior periphery of the reinforcing plies, or on the outside of the skim rubber (31).

In a rolling assembly comprising a tyre (P), an adapter (A) provides the connection between one of the beads (B) and the rim (J) of the rolling assembly, the adapter (A) comprising: a substantially axial body (11) comprising at least one main reinforcement (17) comprising one first (18) and one second (19) reinforcing ply each comprising reinforcers coated in elastomer composition referred to as skim rubber (31); a layer (30) of elastomer composition in a colour other than black, also referred to as coloured rubber, positioned as desired—in place of the skim rubber (31) with which the reinforcers of each ply are coated, or in place of the skim rubber (31) with which the reinforcers are coated and placed only on the exterior periphery of the reinforcing plies, or on the outside of the skim rubber (31).

Assembly of a rim (3) and of a flexible adapter (1), intended to make up, with a tire (2), a rolling assembly, the rim (3) having a mounting well (33) that is extended axially by a boss (34), a substantially frustoconical rim seat (31) and a rim flange (32) that extends the rim seat (31) axially on the outside, with a bearing face of substantially radial orientation, the adapter having an axially inner end (10) intended to rest on the rim seat (31), an axially outer end (11) and a substantially cylindrical body (12) that connects the axially inner end (10) and the axially outer end (11) and is intended to receive, in cooperation with the axially outer end, a tire bead (21), characterized in that the substantially frustoconical rim seat (31) of said rim has an inclination (α) relative to the axis of rotation DD′ of between −2 and +6 degrees, said angle (α) being counted as positive when the virtual vertex S of said substantially frustoconical seat is situated axially on the outside.

An improved mechanism to secure a tire between a bead ring and a wheel utilizing a bolt is provided. The bolt has a ball seat that pivots within an enlarged pilot hole in the bead ring as the bolt threads engage in threaded section of the wheel, pulling the bead ring toward the wheel. As the bead ring is tightened upon the wheel, eventually the bead ring contacts a fulcrum on the wheel, at which point the outer edge of the bead ring is leveraged against the tire bead bundle and pressing down the tire bead to lock it in place against the wheel. As the bead ring can pivot within the enlarged pilot hole around the bolt, the bolt is not stressed. Further, the wheel comprising a safety bead and non-skid coating on the inner wall of the wheel to prevent the wheel sliding around the wheel.

An improved mechanism to secure a tire between a bead ring and a wheel utilizing a bolt is provided. The bolt has a ball seat that pivots within an enlarged pilot hole in the bead ring as the bolt threads engage in threaded section of the wheel, pulling the bead ring toward the wheel. As the bead ring is tightened upon the wheel, eventually the bead ring contacts a fulcrum on the wheel, at which point the outer edge of the bead ring is leveraged against the tire bead bundle and pressing down the tire bead to lock it in place against the wheel. As the bead ring can pivot within the enlarged pilot hole around the bolt, the bolt is not stressed. Further, the wheel comprising a safety bead and non-skid coating on the inner wall of the wheel to prevent the wheel sliding around the wheel.