Abstract: A method of cleaning a tire valve may include: using a tire valve cleaning tool provided with a cleaning part made from a flexible member, and a holder part that communicates with the cleaning part, a maximum outer diameter of the cleaning part being from 50% to 200% of a minimum inner diameter of the tire valve; removing the valve core from a tire valve installed on a wheel, and removing the foreign material adhered to the inner face of the tire valve with the cleaning part.

Abstract: A method for recovering puncture repair liquid includes preparing tube, preparing sealing portion, removing, discharging, inserting, and recovering. The tube is to be inserted into a tire from a tire valve mounted to a wheel. The sealing portion is at a part of the tube in a longitudinal direction, has an outer diameter larger than an outer diameter of the tube, and is fittable in the tire valve. The removing removes a valve core from the tire valve of the wheel. The discharging discharges pressurized air filled in the tire from the tire valve. The inserting inserts the tube from the tire valve so as to bring the tube to a liquid surface of the puncture repair liquid. The recovering recovers the puncture repair liquid in the tire via the tube using a residual pressure in the tire by fitting the sealing portion to the tire valve.

Abstract: A valve core is removed from a tire valve 3 of a wheel 2 with a tire 1 where puncture repair liquid 4 has been injected. Pressurized air filled in the tire 1 is discharged via the tire valve 3. A tube 10 is inserted through the tire valve 3 to bring the tube 10 to a liquid surface of the puncture repair liquid 4 while the pressurized air in the tire 1 is being discharged. The puncture repair liquid 4 in the tire 1 is recovered via the tube 10 using a residual pressure in the tire 1. In this manner, the puncture repair liquid can efficiently be recovered without cutting off the tire valve.

Abstract: A flat tire sealant storage container is provided for a flat tire repair device in a formed in a simple configuration which enables the container to be stably secured. The flat tire sealant storage container includes an air inflow pipe for injecting compressed air under pressure into the container filled with a flat tire sealant and a sealant outlet discharge pipe for discharging the flat tire sealant under pressure to the outside of the container. The flat tire sealant storage container further includes an attachable and detachable fixing device formed on the outer surface of the container. When the container is secured to an external object by the fixing device, the inlet of the sealant outlet discharge pipe is positioned at the inner lower part of the container.

Abstract: Disclosed is a liquid coagulant which can be injected into the inside of a tire without removing the tire from a rim and which can prevent the scattering of a residue of a tire puncture sealing material when the tire is removed from the rim. The liquid coagulant can coagulate an emulsion that contains a natural rubber latex. The liquid coagulant comprises a urethane resin and/or an acrylic resin which has a pH value of 2.0 to 4.0 and contains a cationic functional group.

Abstract: Provided are a tire noise reduction device allowing rapid and reliable puncture-repair of a pneumatic tire provided with an annular sound absorbing member on the inner surface of a tread portion of the tire, and a pneumatic tire provided with the tire noise reduction device. The tire noise reduction device includes: the annular sound absorbing member made of a porous material; and a repair liquid permeable layer stacked on an outer peripheral surface of the sound absorbing member. The repair liquid permeable layer has many continuous pores and has a flow resistance lower than that of the porous material. The tire noise reduction device is mounted on the inner peripheral surface of a tread portion of the pneumatic tire.

Abstract: A method and device for recovering puncture repair liquid without cutting out a tire valve. The method uses a device including a tube and either a pipe member or a drainage device. The tube reaches a tire inner surface when inserted into the tire from a tire valve mounted to a wheel, and the pipe member or drainage device connects between the tire valve and a pressurized air source. A valve core is detached from a tire valve of the wheel. The tube is inserted into the tire via the valve, the pipe member or drainage device is connected between the valve and air source, the tire is filled with air from the air source, and the puncture repair liquid in the tire is recovered through an end portion of the pipe member or drainage port due to air escaping from the tire.

Abstract: Provided is a tire sealant liquid container that accommodates a tire sealant liquid, and that includes: an air inlet guiding therein a compressed air outputted by a compressor; and a tire sealant liquid outlet guiding the tire sealant liquid into a tire. The air inlet is provided at a position above a liquid level of the tire sealant liquid, and the tire sealant liquid outlet is provided at a position below the air inlet.

Abstract: A device for recovering puncture repair liquid includes a tube to be inserted from a tire valve mounted to a wheel up to an inner surface of a tire, a container having a pair of connecting ports for receiving and containing puncture repair liquid recovered from inside the tire, and a connecting hose for connecting between the tire valve and one of the connecting ports. The other connecting port is removably attachable to a pressurized air source. A valve core is detached from a tire valve of a wheel with a tire mounted thereon into which puncture repair liquid has been injected. The tube is inserted into the tire which is filled with air from the pressurized air source that is then detached from the container. Thus, recovery of the puncture repair liquid is efficiently performed using pressure escaping from the tire without cutting out the tire valve.

Abstract: Provided is a tire sealant liquid container that accommodates a tire sealant liquid, and that includes on the lower side: an air supply hose guiding therein a compressed air outputted by a compressor; and a tire sealant liquid injection hose guiding the tire sealant liquid into a tire. Part of the outer surface of a container body is provided with a holder so that the air supply hose can be arranged to partially pass above a liquid level (7a) of the tire sealant liquid.

Abstract: Provided is a pneumatic tire capable of suppressing a flow of a sealant in a sealant layer due to a centrifugal force generated during the running of the tire. A pneumatic tire of the present invention is a pneumatic tire provided with a sealant layer on an inner surface of the tire in a region corresponding to a tread portion of the tire. The pneumatic tire includes a cover sheet disposed on an inner side of the sealant layer in a radial direction of the tire so as to cover the sealant layer. In the pneumatic tire, a mass per unit area of a center portion of the cover sheet is made larger than a mass per unit area of outer portions of the cover sheet. A width of the cover sheet may be made smaller than a width of the sealant layer.

Abstract: Disclosed is a pneumatic tire which has an enhanced uniformity of the tire including an adhesive sealant layer disposed inside its tread portion. In a pneumatic tire T including an adhesive sealant layer 5 disposed inward of an inner liner 4 in a region corresponding to its tread portion 1, the adhesive sealant layer 5 is formed of a laminate including: an auxiliary rubber layer 5a disposed closer to the inner liner 4, the compression set of the auxiliary rubber layer 5a being set at 40% or less; and an adhesive sealant material 5b disposed inward of the auxiliary rubber layer 5a.

Abstract: A flat tire sealant storage container is provided for a flat tire repair device in a formed in a simple configuration which enables the container to be stably secured. The flat tire sealant storage container includes an air inflow pipe for injecting compressed air under pressure into the container filled with a flat tire sealant and a sealant outlet discharge pipe for discharging the flat tire sealant under pressure to the outside of the container. The flat tire sealant storage container further includes an attachable and detachable fixing device formed on the outer surface of the container. When the container is secured to an external object by the fixing device, the inlet of the sealant outlet discharge pipe is positioned at the inner lower part of the container.

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: Provided is a pneumatic tire including a puncture-resistant layer disposed on the inner side of a tread portion while having enhanced uniformity. A gel sheet 5 is disposed, as a puncture-resistant layer, on the inner side of an inner liner 4 in a region corresponding to a tread portion 1, the gel sheet made of a silicone compound, a urethane compound, a styrene compound, or an ethylene compound, the gel sheet having needle penetration of 50 or more after curing and having an Asker C hardness of 40 or less.

Abstract: Disclosed is a pneumatic tire which has an enhanced uniformity of the tire including an adhesive sealant layer disposed inside its tread portion. In a pneumatic tire T including an adhesive sealant layer 5 disposed inward of an inner liner 4 in a region corresponding to its tread portion 1, the adhesive sealant layer 5 is formed of a laminate including: an auxiliary rubber layer 5a disposed closer to the inner liner 4, the compression set of the auxiliary rubber layer 5a being set at 40% or less; and an adhesive sealant material 5b disposed inward of the auxiliary rubber layer 5a.

Abstract: Provided is a tire sealant liquid container that accommodates a tire sealant liquid, and that includes: an air inlet guiding therein a compressed air outputted by a compressor; and a tire sealant liquid outlet guiding the tire sealant liquid into a tire. The air inlet is provided at a position above a liquid level of the tire sealant liquid, and the tire sealant liquid outlet is provided at a position below the air inlet.

Abstract: Provided is a tire sealant liquid container that accommodates a tire sealant liquid, and that includes on the lower side: an air supply hose guiding therein a compressed air outputted by a compressor; and a tire sealant liquid injection hose guiding the tire sealant liquid into a tire. Part of the outer surface of a container body is provided with a holder so that the air supply hose can be arranged to partially pass above a liquid level 7a of the tire sealant liquid.

Abstract: Provided is a pneumatic tire capable of suppressing a flow of a sealant in a sealant layer due to a centrifugal force generated during the running of the tire. A pneumatic tire of the present invention is a pneumatic tire provided with a sealant layer on an inner surface of the tire in a region corresponding to a tread portion of the tire. The pneumatic tire includes a cover sheet disposed on an inner side of the sealant layer in a radial direction of the tire so as to cover the sealant layer. In the pneumatic tire, a mass per unit area of a center portion of the cover sheet is made larger than a mass per unit area of outer portions of the cover sheet. A width of the cover sheet may be made smaller than a width of the sealant layer.

Abstract: Provided are a tire noise reduction device allowing rapid and reliable puncture-repair of a pneumatic tire provided with an annular sound absorbing member on the inner surface of a tread portion of the tire, and a pneumatic tire provided with the tire noise reduction device. The tire noise reduction device includes: the annular sound absorbing member made of a porous material; and a repair liquid permeable layer stacked on an outer peripheral surface of the sound absorbing member. The repair liquid permeable layer has many continuous pores and has a flow resistance lower than that of the porous material. The tire noise reduction device is mounted on the inner peripheral surface of a tread portion of the pneumatic tire.