233 results about "Tubeless tire" patented technology

Pneumatic tires adapted to use on bicycles have a number of criteria that need to be evaluated. For high performance bicycle riding, such as in mountain bike races, it is advantageous to optimize performance. Standard tires with tubes have ease of repair in the replacement of a punctured tube, have the ability to maintain pressure for long periods, and do not require special adaptation of the rim for sealing.

A rim of a spoke wheel for tubeless tires including a sealing device (12, 25, 27, 36, 44, 46, 48) arranged in the region of a rim bed (2) in a well (11) of the rim (1) and the rim (1) comprising on both sides of a rim center plane (10) a relief (13) with sealing areas, the relief (13) being provided with two constrictions forming the sealing areas (14, 14′) and the sealing device (12, 25, 27, 36, 44, 46, 48) being configured substantially complementary in shape and size to the relief (13) and is arranged therein.

Embodiments described herein provide for one or more of: (1) airflow enhancement around a rim using cusps that create virtual surfaces of air with the bike in motion, which also encourage favorable air attachment around the rim; (2) wake reduction by streamlining the airfoil around the rim using trip edges at various points of rim surface transition, which cause a laminar flow to go turbulent for enhancing the streamline effect; (3) a double rim surface, which provides an air slot between the two rim surfaces at a distance that enhances flow attachment and adds energy of air flow around the rim by moving air between areas of high and low pressure; and (4) a tubeless tire rim kit capable of converting conventional rims into tubeless ones and also promoting the sealing of the tire to the rim with minimal air pressure necessary to create the seal.

Device for tubeless tire bead engagement and inflation, generally for tire removal machines (1) having a unit for supporting and locking a wheel (wheel rim+tire) (5-15) in a bedded position, comprises a movable implement to be associated with the structure of the tire removal machine, and generally shaped as a handlebar the handles (9) of which are lowerly provided with at least one compressed air delivery nozzle (11), said handlebar being able to move between a rest position in which it is spaced from said bedded wheel, and a working position in which said nozzles, retained thereat by the operator, extend beyond the upper bead retention flange (55) of the wheel rim (5) to blow air below it at the command of said operator.

The present invention relates to one kind of puncture resistant leak-less material for tyre without inner tuber and its preparation process. The material consists of two components mixed together, the component A consists of SEBS1 and white oil; and the component B consists of natural rubber, sulfur, promoter DM, stearic acid, zinc oxide and calcium carbonate. The preparation process includes the following steps: mixing SEBS1 and white oil and foaming the mixture; heating the mixture in a reactor, cooling and crushing; heating the materials of the component B, cooling, adding the crushed component A material, heating and cooling. The material for tyre has high heat resistance, high cool resistance, high oil resistance and high water resistance, and the tyre of the said material has no leakage and self repairing function.

A wheel rim device includes a rim member having a bridge extending between two side walls, and a valve device having a valve stem engaged with the bridge and having a sealing member attached to the valve stem for engaging with the bridge and for anchoring the valve stem to the bridge of the rim member and for making an air tight seal between the valve stem and the rim member, and the sealing member includes a casing engaged onto the valve stem and engaged between the valve stem and the bridge for further making a solid and stable air tight seal between the valve stem and the rim member. The casing is engaged onto a flanged head of the valve stem for engaging with the bridge.

A tire, and an apparatus and method for forming a tire. The tire may either be a tubed or tubeless tire, and is filled with a mixture of virgin rubber and small rubber pieces. Preferably, a machine grinds the core of used flatproofed tires, or pieces thereof, into a finely communicated pulverulent. The pulverent is mixed with liquid virgin flatproofing material, such as a polyurethane. An injector introduces this mixture, into the core of a tire, typically through a valve. The core of the tire is preferably substantially filled with this mixture. The injector may take the form of one or more elongated screws and the mixing may occur as the ground rubber is being conveyed by the screw.

A tubeless air valve stem has a body, an airtight element, and a sleeve. The body has a passage, a through hole, and at least one side hole. The passage is formed on a top end of the body. The through hole is formed through a bottom end of the body and is in communication with the passage. The at least one side hole is formed through an outer surface of the body and is in communication with the passage. The airtight element is disposed around the body. The sleeve is disposed around the body for closing the at least one side hole. Gas or liquid can be injected into a tubeless tire via the at least one side hole. The intake efficiency of the tubeless air valve stem can be maintained and is not influenced by the remaining reinforcing agent.

A toric membrane of reinforced rubber, used as a support for the tread of a tubeless tire and forming with the tire P and its mounting rim a rolling assembly, characterized in that, when inflated to a pressure p0 greater than the pressure p1 of the cavity of the tire, it has in the inflated state a crown radius RM less than the loaded radius RE of the tire when used at its recommended pressure, the membrane being reinforced in its crown by a crown reinforcement and a hooping reinforcement composed of circumferentially oriented cords or cables, and in its sidewalls by at least one reinforcement ply, wound around an annular reinforcement element having a breaking load slightly greater than that of the hooping reinforcement.

The invention relates to an all-steel radial tubeless tire. An outer side end point of a rubber sheet below a crown is positioned between the inner side of the crown side and tire shoulder pad rubber; the inner side end point is positioned between a tire crown buffer rubber sheet and a No.4 (or zero degree) belt ply, and seals the end points of a No.2 belt ply, a No.3 belt ply and a No.4 belt ply (or zero degree). By the improvement of the tire crown structure, the rigidity of the tire crown is increased, so that the peripheral deformation in the driving process of a tire is relatively small, the rolling resistance is low, and oil is saved; meanwhile, the bonding force between the tire crown and the pad rubber is also intensified; the shearing stress among the belt plies is reduced, and the splitting among the belt plies as well as among the belt plies and the tire crown, which is caused by stress concentration and ultra high thermogenesis, is prevented, so that the durable safety of the tire shoulder part is improved greatly; the safety hazard of a tire in the aspects of over loading, high-speed long-distance transportation and the like is reduced; the service life of the tire is prolonged; the scheme is feasible, economic and reliable.

A tire, and an apparatus and method for forming a tire. The tire may either be a tubed or tubeless tire, and is filled with a mixture of virgin rubber and small rubber pieces. Preferably, a machine grinds the core of used flatproofed tires, or pieces thereof, into a finely communicated pulverulent. The pulverent is mixed with liquid virgin flatproofing material, such as a polyurethane. An injector introduces this mixture, into the core of a tire, typically through a valve. The core of the tire is preferably substantially filled with this mixture. The injector may take the form of one or more elongated screws and the mixing may occur as the ground rubber is being conveyed by the screw.

Bicycle rims that allow tires to be more easily mounted in a tubeless configuration are disclosed. More specifically, a bicycle rim may control the two beads of the tire with separate bead channels for each bead and a center bridge extending between the two bead channels.

A bell assembly for inflating a tubeless tire on a wheel includes a first bell and a second bell slidably disposed within the first bell. The second bell includes a smaller diameter than the first bell. A shaft extends upwardly from the second bell in one of a relative to the first bell. A locking member is engagable with the shaft and is movable between a first locking position and a second locking position. The locking member secures the second bell in the first bell position when the locking member is disposed in the first locking position. The locking member secures the second bell in the second bell position when the locking member is disposed in the second locking position.

An apparatus and method to seat a tire on a rim are described. Protrusions and a handle on the apparatus allow a user to brace the protrusions against the rim to prevent blow back when air is vented into the gap between the tire and the rim to seat the tire bead. The air is vented through a plurality of holes in the apparatus and the flow of the air into the apparatus is controlled by positioning a bridge handle of a flow control valve situated between the apparatus and a tank of air.

A tire valve-gauge combination utilized to inflate and deflate conventional tubed or tubeless tires while giving the user an indication of the amount of air pressure within the tire's chamber. The accessory device of the present invention comprises; a flexible rim-attaching base having a larger lower body portion than the rim perforation of a conventional tire and a central neck portion having an outside diameter equal or lesser than said rim perforation, a rigid gauge portion having a transparent molded tube-like form imprinted with markings identifying the location of a moveable luminescent indicator adapted to travel longitudinally within said gauge portion, a cap base portion adapted to securedly attach to the upper portion of the gauge portion and slidably communicating with a cap portion. Therefore, when a tire is under pressure, the inner air pressure exerts positive pressure against the under side of the piston, which in turn, displaces the location of said indicator, indicating the tire's air pressure.

A portable device for seating the beads of a tubeless tire and rim assembly, the device including an air tank containing pressurized air, the air tank being mounted substantially within a bracket, the bracket having a surface for supportably receiving the tire and rim assembly, and a means for directing the pressurized air between a bead of the tire and the rim.

The present invention is a simple kit for removal and insertion of valve stems for tubeless tires while the tire remains mounted on the rim.