An insert for a pneumatic tire including an annular member adapted to contact at least 10% of an interior surface of the pneumatic tire and provide an outward pressure thereagainst. An insert for a pneumatic tire including an annular member adapted to contact at least 10% of an interior surface of the pneumatic tire and provide an outward pressure thereagainst, and an inflatable bladder disposed adjacent to the annular member. A tire assembly including a pneumatic tire having an interior surface and an annular member contacting at least 10% of the interior surface and providing an outward pressure thereagainst.

An insert for a pneumatic tire including an annular member adapted to contact at least 10% of an interior surface of the pneumatic tire and provide an outward pressure thereagainst.

An insert for a pneumatic tire including an annular member adapted to contact at least 10% of an interior surface of the pneumatic tire and provide an outward pressure thereagainst.

Disclosed is a combination flat-proof tire and low friction insert having particular application for use on a motorcycle. The insert is preferably manufactured from a resilient (e.g., closed cell foam) material. The insert fills the tire and is movable relative thereto. A low friction sleeve surrounds the insert so as to reduce both friction and heat at the interface of the insert and the tire to minimize the degradation and replacement of the insert. By way of example, the low friction sleeve is manufactured from a smooth textile material having a thickness of about 0.005 inches. In one embodiment, the insert is separated into a plurality of compressible segments aligned side-by-side one another around the tire. Relatively hard spacers are located between adjacent pairs of the insert segments to apply compressive forces to the insert segments in response to road conditions.

Disclosed is a combination flat-proof tire and low friction insert having particular application for use on a motorcycle. The insert is preferably manufactured from a resilient (e.g., closed cell foam) material. The insert fills the tire and is movable relative thereto. A low friction sleeve surrounds the insert so as to reduce both friction and heat at the interface of the insert and the tire to minimize the degradation and replacement of the insert. By way of example, the low friction sleeve is manufactured from a smooth textile material having a thickness of about 0.005 inches. In one embodiment, the insert is separated into a plurality of compressible segments aligned side-by-side one another around the tire. Relatively hard spacers are located between adjacent pairs of the insert segments to apply compressive forces to the insert segments in response to road conditions.

A wheel for a racing bicycle including a rim with a rim body having a rim well and lateral rim flanks provided with rim flanges, the rim flanges showing bulges protruding inwardly, each defining an undercut at the pertaining rim flange. A tire with two circumferential tire beads is accommodated on the rim body between the rim flanges, the tire beads bearing against the inside of the rim flanges and entering the undercut at the bulges of the rim flanges. A tire retaining device is included which is disposed in the internal space between the tire and the rim well. The tire retaining device includes an insert member having a hollow space that extends between the tire beads and contains a radially outwardly peripheral wall and a radially inwardly peripheral wall, wherein at least the radially inwardly peripheral wall extends continuously across an inner axial width of the insert member.

A wheel for a racing bicycle including a rim with a rim body having a rim well and lateral rim flanks provided with rim flanges, the rim flanges showing bulges protruding inwardly, each defining an undercut at the pertaining rim flange. A tire with two circumferential tire beads is accommodated on the rim body between the rim flanges, the tire beads bearing against the inside of the rim flanges and entering the undercut at the bulges of the rim flanges. A tire retaining device is included which is disposed in the internal space between the tire and the rim well. The tire retaining device includes an insert member having a hollow space that extends between the tire beads and contains a radially outwardly peripheral wall and a radially inwardly peripheral wall, wherein at least the radially inwardly peripheral wall extends continuously across an inner axial width of the insert member.

A run flat system. The run flat system includes a run flat assembly and a continuous elastomeric cap member. The run flat assembly includes a plurality of arcuate shaped run flat segments which collectively form a ring, and the run flat assembly forms a noncompliant load bearing portion of the run flat system. The continuous elastomeric cap member covers a radially outer surface of the run flat assembly, and the continuous elastomeric cap member forms a compliant portion of the run flat system.

A run flat system. The run flat system includes a run flat assembly and a continuous elastomeric cap member. The run flat assembly includes a plurality of arcuate shaped run flat segments which collectively form a ring, and the run flat assembly forms a noncompliant load bearing portion of the run flat system. The continuous elastomeric cap member covers a radially outer surface of the run flat assembly, and the continuous elastomeric cap member forms a compliant portion of the run flat system.

Disclosed are an explosion-proof tire hub, including a hub body and an explosion-proof convex retainer. The hub body includes bent portions configured to mount a vacuum tire, the hub body is provided with a central axis, the explosion-proof convex retainer is fixed on the hub body, the distance between an upper end of the explosion-proof convex retainer and the central axis is L1, the distance between an upper end of the bent portion and the central axis is L2, and L1 is greater than L2. In case of burst or instantaneous pressure loss, because the distance L1 between the upper end of the explosion-proof convex retainer and the central axis is greater than the distance L2 between the upper end of the bent portion and the central axis, the explosion-proof convex retainer reduces the distance between the whole hub and the ground during tire burst and improves safety performance.