Abstract: The present invention provides a compound, system, and method for retrofitting and converting standard bicycle rims and tires having tubes to be tubeless. Standard tube tires are retrofitted by installing either rim tape or a rim strip with integral valve stem around the inner channel of the rim, mounting the first bead of the tire, injecting a liquid sealing compound into the tire cavity, finishing mounting the tire, inflating, and installing the tire on a bicycle. The sealing compound may additionally contain propylene glycol or an aggregate material to encourage the sealing of the tires as punctures occur when the tire system is placed into use.

Abstract: This invention relates to a pneumatic tire having a built-in sealant layer and its preparation. The sealant layer precursor is a layer of a butyl rubber based composition which contains an organoperoxide. The butyl rubber of said precursor is a copolymer of isobutylene and isoprene containing from about 0.5 to about 5, alternately less than 1, mole percent isoprene. The precursor composition contains carbon black and/or coal dust and may contain a dispersion of liquid conjugated diene polymer (e.g. liquid cis 1,4-polyisoprene polymer), short fibers and/or hollow glass microspheres. A layer of the sealant precursor is built into the tire between a sulfur vulcanized halobutyl rubber innerliner and conjugated diene-based rubber of the tire carcass. The butyl rubber of the sealant precursor is partially depolymerized by the organoperoxide during the elevated temperature vulcanization of the tire to form the built-in sealant layer.

Abstract: The viscosity of a puncture-preventing sealant (7) is set in a range of 25 to 35 dPa·s, and a thixotropy index is set in a range of 6.5 to 11.0, the sealant (7) being filled in a sealant chamber (6) defined to extend along an outer periphery of an air chamber (5) in a tire (T). When the tire (T) is being rotated by traveling of a vehicle, the viscosity of the sealant (7) is reduced by a stirring action provided by a vibration or a centrifugal force of the sealant (7), whereby the sealant (7) can be diffused uniformly in the sealant chamber (6). When the vehicle has been stopped and the stirring action has been extinguished, the viscosity of the sealant (7) is increased, whereby the sealant (7) is maintained in a state in which it has been diffused uniformly in the sealant chamber (6) without flowing downwards in the sealant chamber (6) by gravitation. Therefore, even when the vehicle is travelling at a high speed, the generation of a vibration and a noise can be prevented.

Abstract: A pneumatic tire 1 having a toroidal shape in which bead portions 4 are connected to sidewall portions 3 extending radially inward from opposite ends of a tread portion 2 and a sealant 6 for preventing a blowout is disposed to extend in a circumferential direction in the tread portion 2. A seal unit 7 formed by sealing the sealant 6 for preventing the blowout in a sack-shaped member in advance is disposed to extend in the circumferential direction of the tire in the tread portion 2 prior to vulcanization.

Abstract: The invention relates to a tire with rubber tread of cap/base construction. The tread base underlies the tread cap. The tread base is relatively thick, namely at least 50 percent of the thickness of the tread cap. It is desired that the tread base rubber composition contains a significant amount of sulfur to enhance physical properties of the tread base. The tread base rubber composition contains a combination of anti-reversion agents to counteract a tendency for reversion of physical properties of the tread base which is relatively thick as compared to the tread cap. The combination of anti-reversion co-agents is 1,3-bis-(citraconimidomethyl)benzene and hexamethylene 1,6-bis(thiosulfate), disodium salt, dehydrate thereby substantially maintaining the integrity of physical properties of the tread base, reduced tire operating temperature, as well as retarded or eliminated groove cracking in the tread cap has been observed.

Abstract: A tire sealer and inflating composition and products made therefrom are described. The tire sealer and inflating composition includes a sealant, a non-flammable propellant with an ozone depletion potential of zero or substantially close to zero, and one or more aromatic hydrocarbons capable of lowering the vapor pressure of the non-flammable propellant. Moreover, the tire sealer and inflating composition has a vapor pressure less than about 180 psig at 130° F. A preferred propellant is 1,1,1,2-tetrafluoroethane, although other fluorocarbons can also be used. A preferred aromatic hydrocarbon is AROMATIC 150, which is a mixture of aromatic compounds. The tire sealer and inflating composition can either be aqueous or non-aqueous. The disclosed tire sealer and inflating composition is capable of inflating a flat tire or other inflatable objects and seal a puncture wound.

Abstract: A tire puncture sealing preparation is directed to sealing in wet conditions, at low and high temperatures and with defects at the transition between the tread and the side wall of the tire. The sealing preparation contains natural rubber latex or a combination of rubber latex and compatible adhesive resin. Furthermore, various embodiments are directed to introducing the sealing preparation into the tire and for the pumping up thereof. An air compressor, or liquefied dinitrogenoxide, or sulphur hexafluoride are preferably used as a pressure source with these devices.

Abstract: A puncture sealing agent for sealing an inner surface of a tire comprises a deproteinized rubber latex that is formed by removing protein from a natural rubber latex. The puncture sealing agent includes nitrogen content at 0.1 wt. % or less of rubber solid content of the deproteinized rubber latex, and ammonia content at 0.5 wt. % or less of the rubber solid content.

Abstract: A puncture-durable tire structure has a tire body which is covered with an outer radial ply at the inner side thereof. The outer radial ply is made up of an inner layer and an outer layer that are respectively extended over the bead wires at the edges of the tire body and further extended to a middle position of a rubber side wall of the tire body. The inner side of the outer radial ply is in abutment with an airtight layer which is in turn in abutment with a leakage-proof layer. The leakage-proof layer is further covered with an inner radial ply which has an inner layer and an outer layer. The outer layer of the inner radial ply extends to a tire lip portion of the tire body and the inner layer of the inner radial ply is led over and wound around the bead wires at the tire body and further extends to the upper portion of the rubber side wall.

Abstract: A tire sealant and inflator composition for the repair of puncture wounds in pneumatic tires and the like. The composition utilizes a sealing component consisting of an acrylic resin dissolved in a suitable solvent and a hydrochlorofluorocarbon and/or hydrofluorocarbon propellant component to deliver the sealing component from an aerosol container into the tire to a driveable state.

Abstract: This invention relates to novel tire sealer and inflator compositions. The compositions may be aqueous or non-aqueous and comprise a petroleum residual resin sealant, an amorphous polyolefin, an organic solvent, a vapor pressure depressant, and a non-flammable propellant/inflator having an ozone depletion potential of zero. For the aqueous system, the composition further comprises an emulsifier. The compositions are useful for sealing and inflating a punctured tire in combination with a propellant/inflator.

Abstract: The present invention relates generally to a valve stem for a pneumatic tire and more specifically to a valve stem which is capable of allowing for the introduction of pulverulent matter into the tire directly through the valve while at the same time also being capable of filtering the air released from within the tire through the valve core to prevent pulverulent matter contained within the tire from entering the valve core seat assembly and the atmosphere. The present invention also prevents pulverulent matter which may be contained within a tire from being forced into the valve core over time through use of the tire and due to routine checking of tire air pressure. The invention is suited for use with any size wheel and tire assembly including those found on automobiles, light trucks, heavy duty over-the-road trucks, and heavy duty off-road trucks.

Abstract: A tire sealant and inflator composition for the repair of puncture wounds in pneumatic tires and the like. The composition utilizes a sealing component consisting of an acrylic resin dissolved in a suitable solvent and a hydrochlorofluorocarbon and/or hydrofluorocarbon propellant component to deliver the sealing component from an aerosol container into the tire to a driveable state.

Abstract: The present invention resides in a sealant composition for pressurized articles, and in the articles comprising the sealant. The present invention is particularly useful as a sealant for high pressure tires, adapted for pressures higher than 50 psig. The sealant of the present invention comprises a high molecular weight elastomer, a low molecular weight liquid elastomer, and a cross-linking agent. The low molecular weight liquid elastomer is substantially free of iron.

Abstract: An apparatus for building a tire having an inner liner to which a sealant strip is to be laminated, comprises a rotary drum having a surface in which a trough or "groove" is provided. The depth of the groove corresponds approximately to the thickness of a layer of an elastomeric sealant which is to be placed in the groove. If the walls of the groove are contoured so as to confine the sealant layer in a specified manner while accommodating the thermo-viscous properties of the laminate, the completed first stage carcass may be removed without damaging the sealant layer which is adhered to the inner liner.

Abstract: A self-healing tire system containing a tire casing, a tacky sealant material, an inner tube and anti-tack material is described. In one embodiment, either the surface of the inner tube or the inner surface of the tire casing is coated with the tacky sealant material. The surface of the sealant, the opposing surface or both are coated with the anti-tack material. The anti-tack material renders the sealant non-tacky for a sufficient time so that the inner tube can be inserted and inflated. However, the anti-tack material allows the sealant surface to become tacky again thereby adhering to the tube and providing for sealing of the tube when it is punctured. In another embodiment, a release agent is contained between the sealant and the tire casing which facilitates removal of the sealant and tube from the tire casing.

Abstract: A self-healing tire containing an inner tube is obtained by a method comprising coating either the surface of the tube or the inner surface of a tire casing with a tacky, non-flowing sealant material. Prior to insertion of the inner tube, the surface of the sealant or the opposing surface of the tube or casing or both are coated with a anti-tack material, such as a plasticizer for the sealant. The anti-tack material renders the sealant non-tacky for a period of time long enough for insertion and inflation of the tube. However, the anti-tack material allows the sealant surface to become tacky again thereby adhering the tube to the casing and providing for sealing of the tube when it is punctured.

Abstract: Pneumatic rubber tire with a puncture sealing feature comprised of an enveloped open network structure containing a sealant composition on the inner portion of the tire.

Abstract: A composition useful in sealing punctured tires that includes asphalt, alkadiene-vinylarene copolymer, hydrocarbon resin and other materials. The composition is simple to install and lightweight.

Abstract: A sealant composition for the puncture-sealing tire and a method of producing the same are disclosed. This sealant composition is crosslinking-reaction type and comprises (A) at least one rubber, (B) a tackifier, (C) an acryloyl or methacryloyl group-containing polymerizable unsaturated compound, (D) a filler and (E) a photopolymerization initiator. In the production of the sealant composition, the component (A) is first reacted with the component (C) and then kneaded with the components (B), (D) and (E).