Abstract: A rotating gas injection device for preventing damage to a rawinsonde balloon, comprising: a handgrip part; a gas injection tube; a ball bearing module including an inner ring, an outer ring, wherein the inner ring and the outer ring are rotatably engaged by means of the balls; and an outer ring cover positioned outside of the outer ring to form space between the outer ring cover and the outer ring; wherein, after an insertion of a neck of the rawinsonde balloon into the space, a distance between the outer ring and the outer ring cover is controlled to be decreased so that the neck of the rawinsonde balloon makes tight contact, and in response to an external force exerted on the neck of the rawinsonde, the outer ring is allowed to be rotated together with the neck by means of the balls.

Abstract: A multiple chamber pneumatic tire having an upper section and a lower section. A diaphragm separates the upper section from the lower section. The lower section has at least two chambers. The chambers each have a chamber valve, a nail guard layer, a plurality of fibers having an end connected to an inner wall surface of a chamber, and an interconnected barrier connected to at least two portions of a chamber wall surface. The upper section of the tire has at least one linkage located within at least one tube with a primary end connected to a chamber valve of a chamber and a secondary end connected to a tire rim or to a main valve. A tire pressure monitoring system can be in communication with a chamber valve. The tire can have a ring with at least one retractable stud.

Abstract: A method for locking a tire to a wheel rim, includes the steps of mounting a tubular tire locking element on the wheel rim, which tubular locking member is arranged with a valve, which valve is pushed through a hole in the rim; mounting a tire on the rim such that the tire encloses the tubular tire locking element and a pressure chamber is obtained between the tire locking element and the tire; pressurizing the tubular tire locking element via the valve such that it expands, whereby the beads of the tire are pressed against the flanges of the wheel rim; inserting a hollow needle through the tire and into the pressure chamber, which hollow needle is connected to a pressurized air source; pressurizing the pressure chamber to desired pressure, removing the hollow needle; and sealing the hole caused by the needle with sealing fluid or plug.

Abstract: A pneumatic tires (20FL, 20FR, 20RL, 20RR) each having a plurality of air chambers disposed therein along a tread width direction. An internal pressure control device (100) includes a sensor unit (120) configured to inform a controller (110) that the four-wheel automobile (10) is going as being displaced in the leftward or rightward direction; and the controller (110) configure to change the internal pressures of the plurality of air chambers on the basis of the instruction outputted from the sensor unit (120).

Abstract: A Re-Inflatable tire and inner tube system comprising of a primary flexible inflatable chamber and at least one secondary flexible inflatable chamber housed within the primary flexible inflatable chamber wherein all chambers share a single common inflation valve and wherein pressure is administered and controlled through the common valve to inflate one chamber at a time, independent and separate from all other chambers, while simultaneously releasing pressure from the chambers not being inflated.

Abstract: A tire-filling system has an electronic control unit response to the tire pressure and the vehicle operating conditions for automatically operating pneumatic tire-filling valves to increase or reduce the tire pressure to setpoint values determined by the electronic control unit and matching the driving conditions. The pressure is delivered from a variable volume source in which a control element increases or decreases the volume. The system can be operated as an open system or a closed system.

Abstract: A dual compartment tire has a primary air compartment and a secondary air compartment that is internal to the primary air compartment. During ordinary travel, the primary air compartment is in contact with the road surface, with the secondary air compartment constituting an integral spare tire in the event of a flattening of the primary air compartment. Each of the primary and secondary air compartments is bounded by an exterior surface. In contrast to prior art dual compartment tires, the exterior surface of the secondary air compartment is relatively thicker than the exterior surface of the primary air compartment.

Abstract: Disclosed is a tire/wheel assembly capable of reducing air column resonance sound without deteriorating uniformity or damaging rim assembling performance. In this tire/wheel assembly, an annular tube, an outer sectional area of which is nonuniform in a tire circumferential direction, is arranged in a closed space formed between a pneumatic tire and a wheel.

Abstract: A dual compartment tire has a primary air compartment and a secondary air compartment that is internal to the primary air compartment. During ordinary travel, the primary air compartment is in contact with the road surface, with the secondary air compartment constituting an integral spare tire in the event of a flattening of the primary air compartment. Each of the primary and secondary air compartments is bounded by an exterior surface. In contrast to prior art dual compartment tires, the exterior surface of the secondary air compartment is relatively thicker than the exterior surface of the primary air compartment.

Abstract: A wheel-and-tire apparatus has a pneumatic tire with two or more circumferential tread sections, the relative diameters of which may be adjusted to select the tread sections in contact with the road. The tire may have one or more air chambers. The apparatus facilitates selective use of tire tread designs and compositions having different performance characteristics to suit particular road conditions and vehicle operating parameters. Adjustment of tread section diameters is accomplished using tread diameter adjustment means having a source of compressed air. Sensors monitor selected operational parameters of the vehicle and transmit corresponding signals to a computer, which selects an optimal configuration of tread section diameters to suit the data from the sensors. The computer sends a corresponding signal instructing the tread diameter adjustment means to adjust the diameter of one or more tread sections as required to achieve the selected configuration of tread section diameters.

Abstract: A low-section tire includes an air tube including an internal wall and two air tube sidewalls. The internal wall comprises a greater rigidity than the tube sidewalls so that, when a carcass and the tube are mounted on a rim, and during inflation, the tube sidewalls contact the carcass sidewalls no later than the internal wall contacts a crown portion of the carcass. A process for manufacturing the air tube includes moulding two tube sidewalls separated from each other, moulding a central core, arranging the tube sidewalls and central core in a single vulcanization mould, closing the vulcanization mould to form the tube, feeding pressurized fluid into at least two distinct circumferential portions of the tube, and vulcanizing the tube to join the central core and tube sidewalls. A mould for manufacturing the an air tube includes two axially-external cheeks, two axially-intermediate male dies, and two axially-inner spacers.

Abstract: The present invention discloses a tire for a conventional rim, having two exterior sidewalls and two interior walls, and an annular tread portion with a center, an interior and an exterior surface. The first and second sidewalls extend radially from the tread portion. Each sidewall has a perimeter edge which is sized and configured to be coupled to a wheel hub. The first and second interior walls extend from substantially near the perimeter edge of the first and second sidewalls, respectively, to a predetermined location on the interior surface of the tread portion. The first and second interior walls being attached to the tread portion to transfer loads applied to the tire by alternatively flexing and compressing in response to the loads applied to the tire.

Abstract: A tire wheel for vehicles comprises a mounting rim which can be associated with a hub of a vehicle and is provided with two bead seats forming a cone, for engagement with corresponding beads of a tire, with its apex on said axis of rotation in a position axially outside said rim, a tire comprising a toroidal carcass provided with a crown portion connected to a pair of axially facing sidewalls terminating in beads for engagement with the corresponding bead seats formed on the rim, said tire having its maximum width in the region of said beads, and an inner tube inserted into the toroidal cavity defined between tire and rim, elastically expandable by means of the introduction of fluid under pressure into its internal volume, and provided with an inflating and deflating device inserted in the wall of said inner tube, without any element for connection to the environment outside the wheel, in particular passing through the wall of the rim.

Abstract: A valve for a tire and rim assembly equipped with a pneumatic support membrane designed to be deployed when the pressure difference between the cavity of the membrane and that of the tire exceeds a given threshold, so that every operation of inflation or deflation preserves the integrity of the membrane while preventing any deflation of the tire cavity alone.