Abstract:
An air bladder 2 for a safety tire can be produced while maintaining the high productivity because a curve of tensile force to an elongation reaching to an elongation of 50% has a hook shape changing from a sharp linear form in the vicinity of an elongation of 5% to a generally flat curved form in a crown region 5 of an extended deformation portion 3 and an upward sloping shape smoothly increasing with the increase of the elongation in a side region 6 thereof, and the extended deformation portion does not contact with the inner face of the tire during the normal running of the tire and can equally close to the inner face of the tire during the run-flat running to efficiently support the load.
Abstract:
A safety tire with relatively even temperature distribution in the tire and an air bladder used for it are provided by smoothly flowing air filled in the tire over the entire tire inside in the air filled state even when an air bladder is housed in a tire. A safety tire 1 is provided with a tire 2 and an air bladder 3 in the hollow toric shape. In the air-filled state, a cavity S1 is formed between the outer surface 8 of the air bladder 3 and the inner surface 9 of the tire 2. In the runflat state, the air bladder 3 is inflated and deformed to take over load support from the tire 2. The air bladder 3 has a raised portion 12 on a specific outer surface area A so as to form a flow passage 13 through which air can flow between the rim and the air bladder. The raised portion 12 has on the side face a rigid reinforcing portion 15 whose width is gradually increased from the top face 14 side to the flow passage 13. The ratio of the flow passage 13 to the specific outer surface area A is in the range of 50 to 95% by area ratio.
Abstract:
A safety liner (20) for a vehicle tire (500) includes a tubular body (22) having a one-way valve (24). A service valve (50) is selectively insertable into the one-way valve (24). Tubular body (22) is compressible into a flattened circular shape by a compressive force, and when the compressive force is removed, the tubular body (22) resiliently assumes its original toroidal shape. Safety liner (20) is installed in the cavity (503) of vehicle tire (500) as the vehicle tire (500) is being installed on the tire rim (502). If a blowout or other leak occurs, safety liner (20) will cause the shape of vehicle tire (500) to be retained at a reduced profile.
Abstract:
The present disclosure relates to a lubricating composition usable for lubricating an interface between a tire and a safety support mounted on a wheel rim within said tire, and a mounted assembly for an automobile provided with said lubricating composition. The lubricating composition according to the invention comprises an aqueous or non aqueous lubricating agent, and a polysaccharide intended to thicken said lubricating agent. The lubricating agent comprises glycerine in a mass fraction equal to or greater than about 60% of the lubricating agent and the lubricating agent is present in said composition in a mass fraction of between about 95% and 99%. The invention also relates to the lubrication between the support and the tire when traveling on a flat tire, following a drop in inflation pressure within said tire.
Abstract:
In the present invention, an outer tire is supported and positioned by an auxiliary inner tire such that air can be pumped into the space between the inner and outer tires. When there is a flat tire or leakage, the outer tire is supported by the inner tire and still has an appropriate support to the car, and thus the outer tire will not be compressed completely or grinded by the rim of the wheel, so that the tire will not be damaged easily and the auxiliary inner tire can continue running for a short time.
Abstract:
Disclosed is a run-flat tire and condition sensing assembly for vehicle tires. The assembly comprises plurality of rounded, support objects, wherein each object comprises an interior, an interior surface, and an outer shell. There is also at least one rounded, sensor object comprising an interior, an interior surface, and an outer shell. A pressure sensor, which detects pressure and transmits a corresponding signal, is situated within the sensor object. A net houses the plurality of rounded, support and sensor objects. The interiors of the support objects can be filled with pressurized helium gas, an elastic material or contain a support structure. Accordingly, during deflation of the tire, the sensor alerts the driver of the deflation while the plurality of support objects prevents radical deformation of the tire and allows the driver to operate the vehicle to safety.
Abstract:
A pneumatic insert for a pneumatic tire comprises a generally toroidal-shaped hollow tubular member with beads, that includes an insert inflation chamber pneumatically noncommunicable with the tire inflation chamber. A crown portion of the insert has a radially inner and a radially outer layer that define a closed lubricant chamber, also noncommunicable with the tire inflation chamber under normal running conditions. Lubricant release means such as valve or diaphragm provided in the outer crown layer permit release of the lubricant when the tread collapses against the insert crown during run-flat conditions.
Abstract:
A pneumatic insert for a pneumatic tire comprises a generally toroidal-shaped hollow member having a pair of annular insert beads with sidewalls extending therefrom joined to an insert crown portion. Each insert bead has a foot portion with a projecting elastomeric formation at the bead heel to furnish an inner bead diameter at the heel that is less than the inner bead diameter at the toe.In at least one embodiment of the invention the bead heel projection is of triangular shape with a vertex of the triangle defining the first inner bead diameter.In another embodiment of the invention the projecting elastomeric formation extends axially away from the bead heel in a direction substantially parallel to the bead foot.
Abstract:
A run-flat insert structure for a pneumatic tire is disclosed in which the insert structure comprises a homogeneous elastomeric material and is fully enclosed and pneumatically inflated. The insert structure is mounted within the cavity formed by the pneumatic tire and the wheel rim upon which the tire is mounted. The insert structure is shaped and spaced from the interior walls of the tire such that contact between the insert structure and the interior tire walls is minimized during rated load carrying and inflation conditions of the tire. The volume of the insert structure is less than 50% of the volume of the cavity formed by the tire and the wheel rim to thereby assist in avoiding undesirable contact between the insert structure and the tire. During the deflated condition of the tire, the insert structure supports the tire and its load at a deflection that prevents excessively rapid deterioration of the tire while running in the deflated, run-flat condition.
Abstract:
In a pneumatic, tired wheel having a tubeless tire mounted on the rim of the wheel, the improvement comprising a toroidal support device to enable the tired wheel to travel in a flat state. The support device comprises an inflatable, toroidal, inner tube located on the rim for elastically clamping the tire beads against the rim flanges, said tube radially extending from the well of the rim to or slightly beyond the radially outer edges of the rim flanges, and a toroidal support element whose radially internal, circumferential wall section is impervious to puncture and lies adjacent the radially external, circumferential area of the inner tube, and wherein the outer surface area of the support element is spaced from the inner surface area of the tire when the tire is in its inflated state so that under normal travel conditions the support element does not contact the inner surface area of the tire. The foregoing abstract is neither intended to define the invention disclosed in the specification, nor is it intended to limit the scope of the invention in any way.