Advancements in Tires with Enhanced Braking Performance

Rubber composition for tires containing an inverse vulcanizate having a low glass transition temperature. The inverse vulcanizate is a sulfur-crosslinked organic substance. Rubber compositions containing this inverse vulcanizate have improved breaking strength compared to normal vulcanizate rubber. The inverse vulcanizate has a Tg of 60°C or lower.

Rubber compositions with improved friction and grip force for shoe soles, tires, etc. The compositions contain a specified lignin compound and an amine compound along with the rubber. The lignin is denatured lignin from biomass sources. The amine is a long-chain alkyl amine. The lignin and amine additives enhance the frictional properties of the rubber when compared to normal rubber compositions.

System to warm up all driven wheels of all-wheel-drive vehicles for better tire performance by using line-lock mode. The system involves a controller that selectively brakes and powers the wheels in a specific sequence to warm them up. This involves braking one wheel while powering the opposite wheel, and then swapping to brake the other wheel and power the first wheel. The controller alternates braking and powering the wheels in phases to warm them up.

A tire design that improves braking performance while reducing uneven wear. The tire has a tread with a lateral groove to expel water. The groove has an inclined surface on the groove opening and an opposing inclined surface internally. The angle of the outer inclined surface is 15-30 degrees and the inner inclined surface angle is 5-25 degrees. These angles concentrate braking forces away from the groove opening to reduce uneven wear.

Tire tread design with reduced braking distances on wet surfaces. It uses a hydrophobic surface structure inside the tread grooves. The hydrophobic surface helps water drain quickly from the tread by having protruding elements that repel water. The tread compound includes silica, a vulcanization system, and wax made of nonacosandiols. The hydrophobic surface can be created by laser beam ablation after vulcanization.

Car tire with improved grip performance on dry and wet road conditions. The tire has a tread pattern with circumferential grooves. The grooves contain reinforcing elements along the inner groove walls that extend partially into the tread blocks. The elements reduce the shearing and rocking of the blocks when the tire encounters axial forces during braking and acceleration. This prevents excessive pressure on the leading edges of the blocks and improves grip. The elements increase cornering stiffness without compromising wear or rolling resistance.

A tire that can improve braking performance on icy roads without using studs. The tire has a tread pattern with lateral grooves that have serrated groove walls. The serrations include alternating outwardly inclined surfaces and parallel surfaces. This design sweeps water off the road to improve grip. The inclined surfaces contact the road, wiping away water under braking. The parallel surfaces maintain contact pressure.

Rubber composition for a tire that improves ice braking and wear resistance performance for studless tires. The composition contains a diene rubber and a small amount of thermally expandable microcapsules covered by a crosslinked acrylonitrile butadiene rubber (NBR). The microcapsules absorb stress and suppress wear. Additionally, non-ionic surfactants can be added.

A rubber composition for tires that balances wear resistance, breaking resistance, and operability. The composition contains a multicomponent copolymer with conjugated diene, non-conjugated olefin, and aromatic vinyl units. The copolymer has specific thermal properties like endothermic peak energy, melting point, and glass transition temperature to enhance crystallinity and wear resistance while maintaining operability. The composition also contains an α-olefin with a specific molecular weight range to further improve breaking resistance.

Motorcycle tire geometry improves grip and stability when the motorcycle is leaned over in corners. The tread has a unique contour with higher curvature in the shoulder portions compared to the center portion. This allows the tire to maintain high frictional force at high lean angles without hardening and losing grip. The shoulder curvature is at least 50% of the tread width while the center curvature is no more than 70% of the width.

Pneumatic tire design to improve wet braking and handling performance while maintaining high-speed durability, ride comfort, and rolling resistance. It achieves this by optimizing the belt layer and belt reinforcing layer properties. The tire has belt cords inclined at an angle of more than 30 degrees but 40 degrees or less to the tire circumferential direction. The belt reinforcing layer uses organic fiber cords. The key performance factor is a calculation that involves cord elongation at 5% and 0.5% levels, cord count, and several belt layers and reinforcing layers. The product of those values divided by 1000 should be 11 or higher. This allows increasing the belt angle to improve wet braking and handling without sacrificing high-speed durability.

A pneumatic tire that improves high-speed durability, ride comfort, and rolling resistance while maintaining wet braking and handling stability, by optimizing the belt layer and belt reinforcement. The tire has a belt layer with cords inclined more than 30 degrees but less than 40 degrees to improve wet braking and handling. The belt reinforcing layer uses an organic fiber cord with a product of load and count over 1000N to enhance durability. The rubber cross-sectional area to cord cross-sectional area ratio is 1.0 to 1.5 to balance durability and rolling resistance.

Tire tread design with center and shoulder grooves that provide improved wet braking, wear resistance, and noise performance. The tread has a zigzag shape at the bottom of the main grooves. It also has overlapped lateral grooves in the center land portions offset from the lateral grooves in adjacent center land portions. This unique arrangement provides balanced wet braking, wear, and noise performance.

Tire tread rubber composition with improved wear and ice/snow braking. The composition uses a specific blend of raw rubber, silica, and modified liquid butadiene rubber. The raw rubber is a solution polymerized SBR with controlled styrene and vinyl content. The modified liquid butadiene rubber acts as a softening agent to improve mixing. The silica provides reinforcement.

A non-pneumatic tire design with improved performance and durability. It uses a structural reinforcement part inside the tread to enhance braking, fatigue resistance, vibration dispersion, and torsional torque resistance. The reinforcement part has diagonally crossed cord sheets wound around a central body. The stiffness can be adjusted by changing the material and width of the cords. The reinforcement part is inserted into the tread between the spoke and rim sections.

Tire design with optimized block shape to enhance braking performance on ice and snow surfaces, while also reducing rolling resistance. The tire has blocks partitioned by grooves in the tread. The outer belt edge is positioned outside the outermost circumferential groove. Each block has widthwise sipes. The first sipe closest to the block end is longer than the second sipe further inside. This block shape enhances braking by preventing tread lift-off and maintaining grip at the block edges during deceleration on ice.

A studdable tire design that improves braking performance on ice and snow. The tire has strategically placed stud pin installation holes in the tread. The holes are arranged to prevent reduced clawing force between the studs and the road surface. The center region of the tread has more stud holes compared to the shoulder regions, allowing for more stud pins to engage the road. This prevents snow and ice shaved by the studs in the center from accumulating and inhibiting further traction.