Lightweight Tire Solutions for Enhanced Efficiency

Car tire with low rolling resistance and low weight for improved fuel efficiency and handling. The tire has a unique tread and cord structure to reduce rolling resistance and weight compared to conventional tires. The tread has three crowns separated by longitudinal and transverse grooves with pattern blocks and grooves. The cord body has a reinforcement layer, two support layers, and a support body. This configuration provides lower rolling resistance and weight compared to conventional tires.

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A passenger vehicle tire that can carry higher loads without sacrificing comfort or roominess compared to conventional tires. The tire has a carcass reinforcement that extends into the sidewalls and crown. The carcass is turned inside the bead area and anchored there. This prevents the carcass from stretching as much when inflated below recommended pressure, reducing sidewall deformation and temperature rise. The turned-in carcass also reduces weight compared to extending outward. The tire can carry higher loads without increasing pressure.

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A tire design that allows higher loads without increasing inflation pressure or tire size. The tire has a toroidal-shaped mounting assembly with rotational symmetry around the tire axis. This shape reduces carcass tension compared to conventional tires, especially for tall sidewalls. The toroidal mounting also distributes stresses differently to reduce energy dissipation and sidewall temperatures. This allows higher loads without sacrificing vehicle accommodation, compactness, or comfort compared to larger tires.

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Self-supporting tire with improved ride comfort and reduced weight compared to prior art. The tire has a carcass, belt, and sidewall structure like conventional tires. But it adds asymmetric sidewall reinforcement inserts on the inner and outer sides. The inner side insert is made of a lower modulus rubber than the outer side. This allows self-supporting capability when deflated but with better ride quality compared to using high modulus inserts on both sides. The lower modulus inner insert reduces stress and vibrations compared to the outer insert. The inner insert thickness can be the same or smaller than the outer insert. The lower modulus inner insert enables better ride comfort and lower weight compared to using high modulus inserts on both sides.

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Reducing the weight of tires without sacrificing high-speed stability and durability. The tire design has properties that allow for lighter weight while still maintaining performance. Key features are having a belt layer, tread rubber, and tire dimensions that satisfy specific relationships. The tire needs to have a belt layer, tread rubber, and dimensions that permit lighter weight without sacrificing high-speed stability and durability.

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Tire design for reducing tire weight and improving ride comfort without sacrificing durability. The tire has a tread with rubber layers that contain a rubber component, reinforcing fillers like carbon black and silica, along with compounding agents. The rubber composition has specific properties of a tan delta value of 0.15 or less and a complex elastic modulus of 8.0 MPa or less at 30°C. This composition reduces heat generation and energy loss for better ride comfort. The tire also has a low weight to maximum load capacity ratio of 0.0150 or less, which can be achieved by various methods like reducing rubber thickness.

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Tire design and mounting assembly for electric vehicles that allows higher load capacity without increasing tire size or vehicle chassis. The tire has a unique toroidal-shaped cross-section with orbital symmetry. The mounting assembly also has a toroidal shape matching the tire. This allows higher load capacity by distributing the load radially outward instead of vertically downward. It also allows lower inflation pressure for comfort without sacrificing load capacity. The toroidal shape prevents tire bulging at high loads. The tire and assembly also have optimized carcass tension and material properties for the toroidal shape. Simulations show improved load capacity, stiffness, and radial expansion versus conventional tires.

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A pneumatic tire design that reduces weight while ensuring proper fitment on a rim. The tire achieves this by omitting the bead filler while maintaining rim fitment through a specific bead wire arrangement. The bead wires have a unique cross-sectional shape that prevents the tire from slipping off the rim.

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A spoke wheel with reduced weight while maintaining stiffness compared to conventional spoke wheels. The rim has raised portions that extend outward from the spoke connection points. This provides additional material and stiffness at the critical spoke-to-rim junctions while allowing the center of the rim to be thinner and lighter.

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A sensor mounting system for straddle-type vehicles like motorcycles that allows wired sensors to be attached to detect tire state without increasing wheel weight or air resistance. The sensors are mounted to the fender, which extends over the tire. This reduces weight versus attaching to the wheel, allows wired connection, and minimizes wind hitting the sensors to avoid increasing aerodynamic drag.

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High-performance hybrid tire cord, made of PET and aramid, to improve tire performance, including stability during high-speed and long-distance travel. The hybrid cord has an aramid yarn length of 1-1.1 times the PET length after untwisting, and the PET and aramid yarns have the same twist number. This provides fatigue resistance to prevent cord failure during repeated tension/compression. An adhesive coats the yarns. The hybrid cord has excellent durability, strength of 8-15 g/d, and elongation of 5-15%. It is used as a lightweight, high-strength reinforcement in tire carcasses.

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Run-flat tire with low rolling resistance to reduce fuel consumption. The tire has a unique inner structure that reduces weight without compromising run-flat capability. The tire has a tread, belt, carcass, and sidewall layers. The inner side of the sidewall is divided into segments with equal thickness. The segments closer to the tire center have lower hardness. This allows reducing sidewall weight compared to uniform thickness. The carcass extends below the belt and ends in the tread. The belt has an inner air retaining layer wider than an outer transition layer. This allows cancelling the sidewall transition layer for weight savings. The sidewall reinforcement rubber thickness is optimized for run-flat performance.

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A tire with improved performance, durability, and traction on rough terrain, while keeping the weight low and fuel efficiency high. The tire has a series of annular projections that surround the sidewall and a series of side blocks that protrude radially outward. The annular projections protect against damage to the sidewall when driving over rocks or other obstacles. The side blocks provide traction in snow, mud, or sand by shearing into the ground.

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Pneumatic tire design that has reduced weight and rolling resistance while ensuring desired stiffness. The design includes a carcass ply with a main body portion that extends between the tire's cores and turned-up portions that wrap around the cores. The length from the core/apex boundary to the outer apex end is 10-15 mm. This specific shape of the main body portion allows for reducing weight and rolling resistance while still providing the desired stiffness.

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Pneumatic tire with partial tie rubber layer between carcass and inner liner to reduce weight and rolling resistance. The tire has reduced vulcanization defects by optimizing the partial tie layer geometry and position. The tie layer has inclined ends to prevent air pockets during curing. The tie layer is also segmented and positioned radially outward from other components to maintain steering stability. This allows reducing the tie layer thickness and amount without sacrificing performance.

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Twisted yarn cord for tire reinforcement that provides a uniform twist structure for reduced tire weight while maintaining strength. The cord is made from organic fibers with a total fineness of 5000-15000 dtex. The key is controlling yarn tension during twisting to minimize fiber damage. A feed tension of 0.01-0.3 cN/dtex is used. This prevents over-stressing or wearing the fibers, thus allowing higher twisting tension for better alignment. Adjusting the feed tension during twisting maintains uniformity and prevents damage.

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A non-toxic, biodegradable, and effective tire ballast composition for adding weight to vehicle tires to improve traction. The composition comprises a solvent, lignin, and hemicellulose from non-wood sources, and a sugar compound derived from hemicellulose. The composition is free of corrosive chlorides and has a low freezing point. It provides weight similar to other ballasts like calcium chloride but without environmental harm.

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A spoke for non-pneumatic tires with apertures through the elastomeric joint bodies of the spoke to reduce mass and improve energy efficiency. The spoke has an outer support element and an outer elastomeric joint body connecting the support element to the tire. The joint body has a thickness and contains one or more apertures positioned near one surface.

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Vehicle wheels with reduced weight compared to conventional wheels by optimizing the loading arrangement. The wheel has an annular main section, a mounting section, and a tapered connecting section between them. The main section has a thinner wall thickness than conventional wheels due to the tapered connection that reduces bending moments. The optimized loading arrangement allows for reducing the disc thickness without compromising performance. The main section with bead seats connects to the mounting section offset from the flange.

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A pneumatic tire with reduced weight and improved durability by optimizing the bead area construction. The tire has bead cores, a carcass layer, and a rim cushion rubber. The bead cores are wound bead wires surrounded by the carcass layer turned back over them, and the rim cushion rubber covers the turned-back carcass layer. The turned-back carcass layer forms a closed region around the bead cores. The tire reduces weight and material use by minimizing rubber occupancy in the closed region while maintaining durability with a specific wire arrangement and contact height ratio.

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