Abstract:
A load-bearing structure for a bearing support intended to be mounted on a rim inside a tire fitted on a vehicle to support the tread of the tire in the event of a loss of inflation pressure is provided. The load-bearing structure includes a base, a crown, and an annular body connecting the base and the crown. The body includes a plurality of partitions distributed regularly circumferentially, extending axially substantially from one side to the other of the body and radially from the base to the crown with a mean orientation relative to the radial direction of between 10 and 50 degrees, in that two circumferentially adjacent partitions exhibit contrary orientations relative to the radial direction and in that two adjacent partitions define with the base and/or the crown cavities in the form of triangles or trapezoids.
Abstract:
The invention relates to a flat running device to be fitted on a tubeless mounted assembly for an automobile, and to such a mounted assembly including said device. The flat running device (30) of the invention comprises: an annular bearing structure (31) comprising a ring having a radially outside bearing face (31a) for bearing a flat-running tire cover (20), and at least one tightening belt (32) surrounding the ring so as to maintain the same substantially in contact with a running rim (10), at least one radial reinforcement (31b) being formed in the bearing face, the tightening belt(s) being applied on said reinforcement and being recessed relative to the bearing face. According to the invention, the bearing structure includes a means (33) for locking it in this hollow (11) by mounting the same so as to bear against a side wall (11b) of the hollow, a radially inner face (31c) of the locking means being adapted so as to conform to the axial profile of the bottom (11a) of said hollow.
Abstract:
A detection-alarm mechanism is provided. The detection-alarm mechanism for a tire includes a sensor, an electronic processing unit, a post-processing unit and a display unit. The sensor includes a substrate disposed in the tire and at least one photoelectronic element fixed to the substrate. If the tire is cracked, light passes through the cracks and reaches the photoelectronic elements to generate signals. The electronic processing unit receives signals from the photoelectronic elements to generate wear information. The post-processing unit is disposed in a vehicle on which the tire is installed and receives wear information from the electronic processing unit. The display unit is disposed in the vehicle for presenting the wear information.
Abstract:
A safety system for a tire blowout in a vehicle is disclosed. The system can be activated when a tire blowout occurs. The system comprises of pellets arranged on the outer surface of the rim. The friction between the pavement, the rim, and the tire increases and heats the pellets when a tire blowout occurs. The pellets inflate inside the rim and cover a bigger space as soon as it heats up. The bigger sized pellets on the outer surface of the rim after blowout, acts like a secondary tire and avoids consequences of a tire blowout. The system can also comprise of a rim airbag which explodes as soon as the tire blows out and creates a pseudo tire. The safety system reduces the initial shock of the blowout and prevents losing control of the vehicle, Also, the system creates enough resistance to keep the vehicle in control and bring it to a safe speed. Note also that the “pseudo-tire” may be driven “X” amount of miles (under a certain speed), so the driver may drive to the nearest appropriate area.
Abstract:
Negative Poisson's ratio (NPR) or auxetic are used to make lightweight wheels and runflat tires. The NPR tires can be tailored and functionally-designed to optimally meet the runflat requirements for both military and commercial vehicles. NPR-runflat tires may be fabricated using standard materials and simple manufacturing processes, resulting in low-cost and high-volume production. In preferred embodiments the runflat tire designs are fully compatible with Central Tire Inflation Systems (CTIS), while providing a performance equivalent to current military vehicle solutions but at half the weight. An auxetic wheel according to the invention comprises a line defining an axis of rotation; and a plurality of concentric rings of unit cells surrounding the axis, each unit cell being constructed of a plurality of members defining a Negative Poisson's Ratio (NPR) structure. The outermost ring of unit cells is arranged to facilitate rolling terrain contact, such that the stiffness of the structure in the localized region of loading due to terrain contact increases as the wheel rotates. A layer of material may be disposed between the concentric rings of unit cells which in preferred embodiments comprise a plurality of nested-V shapes. A cover may be provided over the outermost ring of unit cells forming a tire which may, or may not, be inflated.
Abstract:
The present invention provides a run-flat support body and a tire/wheel assembly whose weights can be respectively reduced. The run-flat support body includes an annular shell and elastic rings, the annular shell having an outer peripheral side as a support surface and an inner peripheral side formed in fork-shaped open legs, the elastic rings being attached respectively to the legs portions of the annular shell, and the elastic rings being designed to be mounted on a rim of a wheel. The annular shell is formed of a porous structural material having fine voids. The run-flat support body is attached to an inside of a pneumatic tire mounted on the rim of the wheel.
Abstract:
The invention relates to a flat running device to be fitted on a tubeless mounted assembly for an automobile, and to such a mounted assembly including said device. The flat running device (30) of the invention comprises: an annular bearing structure (31) comprising a ring having a radially outside bearing face (31a) for bearing a flat-running tyre cover (20), and at least one tightening belt (32) surrounding the ring so as to maintain the same substantially in contact with a running rim (10), at least one radial reinforcement (31b) being formed in the bearing face, the tightening belt(s) being applied on said reinforcement and being recessed relative to the bearing face. According to the invention, the bearing structure includes a means (33) for locking it in this hollow (11) by mounting the same so as to bear against a side wall (11b) of the hollow, a radially inner face (31c) of the locking means being adapted so as to conform to the axial profile of the bottom (11a) of said hollow.
Abstract:
It is to solve a problem on an elongation of a partition in a safety tire wherein hollow particles called as a foamable composition are filled in a hollow ring-shaped partition and to propose a safety tire with a partition structure sufficiently developing a function of hollow particles.In a safety tire comprising a tire-approved rim assembly formed by assembling a tire onto an approved rim, a chamber defined inside the assembly through a hollow ring-shaped partition and extending along the rim in a circumferential direction, and thermally expandable hollow particles filled in the chamber, each of which particles consisting of a continuous phase of a resin and a closed cell(s), a hollow ring-shaped sub-partition is disposed on at least radially outside of an outer peripheral portion of the partition and a tire internal pressure is applied to an inside of the sub-partition.
Abstract:
An improved run flat tire and system for use with a two-piece or multi-piece wheel and tire to provide for continued operation of vehicles after tire deflation. Certain aspects of the invention include a plurality of arcuate sections releasably aligned and secured to each other for positioning around a wheel, wherein extended lip portions of each arcuate section extend laterally from the inner base portion of each arcuate section to limit lateral movement of the run flat device relative to the wheel.
Abstract:
A tire and suspension monitoring and warning system consisting of a set of multi-function sensors that monitor and warn of a failure mode. The system monitors and warns for tire imbalance, tire tread wear, and shock absorbers for a tire attached to a vehicle. The monitoring and warning system includes one axial, radial, and lateral acceleration measurement of the wheel to provide acceleration signal sample power. For tire imbalance, signal sample power in the second harmonic of the tire rotational frequency is compared to that of the first harmonic. For tire tread wear, average signal sample power within a second frequency range is compared to a previously stored baseline value. For shock absorber performance, a sum of all frequency components in a second predetermined frequency range is compared to a baseline value.