Tire with changeable shape of tire tread
FIELD: automotive industry.
SUBSTANCE: tire comprises protrusions separated by longitudinal zigzag-shaped grooves to the central rib, middle and lateral rows of protrusions. In the protrusions of the middle rows the inserts of the material are mounted orderly next but one protrusion inside, having the large linear expansion when heated to 40°C.
EFFECT: increase in vehicle flotation in winter and increase in speed and comfort parameters in summer.
The invention relates to the tire industry, in particular to designs all-season tread pneumatic tires.
Known the tread of a pneumatic tire containing a Central continuous rib of alternating longitudinal and transverse elements, as well as three continuous grooves complex configuration.
Suspension, especially the wheels, as organs of converting rotary motion into reciprocating developing large inertial force cargo mass, largely determine the safety on the roads. The growth in the value of the cargo mass and speed are accompanied by a large inertial force. The possibility of a slowdown of this power and stopping the driving of wheel transport depend on the design and material used on the running surface of the tire-tread. The protector is made of different drawings with grooves and protrusions are spikes of carbide materials. Patents of the Russian Federation No. 2098284 (IPC: VS 11/14. Bul. №34, 12.97), №1071460 (bull. No. 5, 07.02.84), inventors ' certificates: No. 495218 (bull. 46, 15.12.75), No. 495218 (bull. No. 46, 15.12.75) aimed at solving tyagovostsepnym, inhibiting qualities of the tire tread.
This reduces the durability of the tire, in addition, metal spikes ruin the surface of the roadway.
In the prototype described in the patent of Russian Federation №2098284, the quality of the ve elements of the anti-skid tires used spikes, which are fixed on the basis of the ribbon protector.
The disadvantage is that with more stringent high speed driving modes dramatically reduced manageable, vehicle stability, traction on wet road and increases samoobrazovanie.
The proposed solution is aimed at improving performance in summer and winter periods of operation.
The essence of the solution is in the tabs of the middle rows of orderly one protrusion is installed inside the insert from a material having a large linear expansion when heated to 40°C, which allow you to change the height of the protrusions depending on the ambient temperature.
In Fig.1 shows an all-season tread pneumatic tires.
The tread of all-season pneumatic tire consists of a Central 1, separated by a groove 2, medium 3, and at 4 tabs. Wide average 2 tabs provide increased safety and comfort when driving.
Average projections made in the form of a parallelogram with scalloped sides, which in circumferential and longitudinal direction are separated by grooves 5 and 6, each second protrusion has an insert of a material having a large linear expansion when heated (marked with thick lines). Inserts provide a change in the cell protrusions, which changes the profile picture of the tyre, increasing traction. Powerful lug extreme edges 3 provide high wear resistance and durability of the tire. The use of district slit-like slots or more narrow grooves between the projections can increase the saturation of the tread, the amount of rubber employed for wear, and therefore, the durability of the tire.
Does the tire is as follows. In the summer due to the positive temperature up to 40°C all secondary tabs are in the upper position, Fig.2, in connection with the expansion inserts. Increases the area of contact with the road, increasing traction, reducing noise effects in the movement and vibration of the wheels. At lower external temperatures below 0°C insert is compressed by reducing the height of the protrusion, and Fig.3, this results in the increased elevation of the working surface of the tire, increasing the permeability of tires in winter conditions.
The use of the changing topography of the surface of the tire, provides improved patency in winter and increase speed and comfort options in the summer.
Bus with variable shape of the tread, including projections, divided by a longitudinal zig-zag grooves on the Central rib, middle and lateral rows of protrusions, wherein the protrusions of the middle rows of orderly through one projection within which are mounted inserts of material, having a large linear expansion when heated to 40°C.
FIELD: automobile production.
SUBSTANCE: invention relates to motor vehicles. Tyre includes anti-slip bands which are made from corrugated elastic material and equipped with anti-skid spikes. The bands are installed in special sunk bandage belts at tyre tread. Note that belt bottom is performed in a form of projections and dents corresponding to band corrugations.
EFFECT: increase of tyre contact with slippery road and their multifunction.
FIELD: transport engineering; tires.
SUBSTANCE: proposed tire is provided with antislip members in form of stud made of wear resistant material and arranged over tire circumference. Studs are hinge-interconnected by means of fasteners to form flexible chain embedded in tire body with projection of stud over outer surface by 0.5-2 cm.
EFFECT: increased reliability and service life of antislip device.
4 cl, 3 dwg
FIELD: automotive industry.
SUBSTANCE: proposed tire has V-shaped grooves of tread with top pointed forwards, with interval up to 50 mm and greater, and width and depth up to 20 mm depending on mass of vehicle (bus, truck, aircraft). Tire is provided with V-shaped abrasive element fitted in and made of abrasive material consisting of silicon carbide, titanium carbide, fillers and binders. Lower layer of element is made of more cheap material, particularly, of titanium alloy.
EFFECT: increased antislip and wear-resistant properties of tire tread.
SUBSTANCE: invention relates to automotive industry. The tire contains tread surface having profile with multiple various radii of curvature in its meridional section. K1 parameter calculated from width of L1 contour and width of developed tread TDW according to following formula (1) meets requirement 0.6≤K1≤0.9, and K2 parameter calculated from central part curvature radius TR1 and tire outer diameter D according to following formula (2) meets requirement 2.0<K2. K1=L1/(TDW"Ч"0.5) (1); K2=TR1/OD (2).
EFFECT: higher slip resistance coefficient at light loads on tire and vehicle protection against loss of control.
3 cl, 4 dwg, 1 tbl
SUBSTANCE: wheel consists of elements embedded therein and including the material with magnetocaloric effect that can be cooled by ambient air or solids of revolution. Vehicle body incorporates permanent magnets to be extended towards the wheel and solids of revolution, said permanent magnets being fitted inside said solids of revolution. At braking on icy road, solids of revolution with permanent magnets extend toward the wheel while elements of magnetocaloric material are heated to transfer heat to solids of revolution or to permanent magnets depending on what element not-heat-insulated contacts with the wheel.
EFFECT: higher wheel friction on ice-covered ground.
4 cl, 16 dwg
SUBSTANCE: composition includes a rubber component selected from a group consisting of synthetic diene rubber and natural rubber, and an oligomeric resin obtained from component a) which includes at least one monomer which is a terpene selected from a group consisting of α-pinene, β-pinene, δ-3-carene, 3-carene, D-limonene, and dipentene, component b) which includes at least one monomer selected from a group consisting of styrene and α-methylstyrene, and component c) which includes a monomer which is phenol.
EFFECT: obtaining additives for making tyres which improve properties thereof.
3 cl, 6 tbl
SUBSTANCE: invention relates to tread of tires passenger carriers suitable for sport cars. Tire comprises tread with mean radial height HB, outer edge (45) and inner edge (46). Tread comprises first area (411) of first rubber compound extending from outer edge (45) to first axial position located at axial distance from outer edge making 20-40% of axial width L. Tread comprises second area (412) of second rubber compound extending from first axial position to second axial position located at axial distance from outer edge making 50-60% of axial width L. Tread comprises third area (413) of third rubber compound extending from second axial position to third axial position located at axial distance from outer edge making 80-90% of axial width L. Its fourth area (414) of fourth rubber compound extending from third axial position to tread inner edge (46).
EFFECT: trade-off between grip of wet and dry soil.
5 cl, 14 dwg, 2 tbl
SUBSTANCE: tire tread has at least two wearing plies including outer wearing ply and at least one inner wearing ply located at mid tread under outer wearing ply, and at least one outer groove located in outer wearing ply. Besides, said tread features volumetric cavity ratio of 0.25-0.40 in sound state and of about 0.25-0.40 in worn-out state. External side interacting with ground extends along one of inner wearing ply in worn-out tread. Additionally, said tread features contact surface ratio of 0.66-0.72 in sound state and of about 0.56-0.66 in worn-out state.
EFFECT: enhanced performances.
15 cl, 19 dwg
SUBSTANCE: rubber mixture contains at least one polar or nonpolar rubber and at least one pale-coloured and/or dark filler, at least one plasticiser, where the plasticiser contains polycyclic aromatic compounds in accordance with Instruction 76/769/EEC in amount of less than 1 mg/kg, and a carbon source for the plasticiser is derived from non-fossil sources, wherein the plasticiser and the carbon source are obtained through at least one "biomass to liquid" process and contain other additives.
EFFECT: invention increases longevity of the rubber mixture in tyres, compatibility thereof with the environment and ensures independence from oil as a raw material source.
61 cl, 4 tbl
SUBSTANCE: tread rubber 2G comprises: subtread ply 9 consisting of non-electro conducting rubber including silicon dioxide in width equal, in fact, to that of cords ply 7 reinforcing the tread. It includes conducting area 11 consisting of conducting rubber extending axial to cover subtread ply outer surface and including opposite ends 11a, 11b extending outward from subtread ply 9 and connected with tire elements Ty electrically connected with rim J with tire fitted thereon. Tire tread 10 consists of non-electro conducting rubber including silicon dioxide and arranged outside said conducting area 10 to make the major contact surface area 2a. Conducting area 10 is bent to extend outward in tire radial direction. Conducting area outer surface 11A extends to contact surface 2a. Tire tread 10 includes first part 10A arranged at one side of conducting area outer surface 11A in tire axial direction and second part 10B located at opposite side of outer surface 11A.
EFFECT: lower rolling resistance, better homogeneity and conductance.
11 cl, 16 dwg, 1 tbl
SUBSTANCE: tread rubber has subtread rubber composed by first non-electro conducting rubber band, running surface rubber composed by helical winding of second non-electro conducting rubber band and conducting area extending through subtread rubber and running surface rubber in radial direction. Conducting area consists of two sections. First conducting section consists of the first conducting rubber band wound inside subtread ply rubber so that it is applied on first non-electro conducting rubber band. Second conducting section consists of the second conducting rubber band wound inside subtread ply rubber so that it is applied on second non-electro conducting rubber band. Exposed surface area composed by radially top end of the first conducting section and exposed surface area formed by radially bottom end of said second conducting section are inclined in different directions relative to tire lengthwise direction to intersect.
EFFECT: higher reliability of tire conductance.
5 cl, 11 dwg, 2 tbl
SUBSTANCE: tyre tread mixture contains a cross-linkable polymer base having an unsaturated chain; 50-90 pts.wt silicon dioxide with surface area of 80-130 m2/g per 100 pts.wt polymer and 4-10 pts.wt per 100 pts.wt polymer of a silane binder of formula I: SH(CH2)3SiR1R2 2 (I), where: R1 is -OCH2CH3, and R2 is -O(CH2CH2O)5(CH2)12CH3.
EFFECT: invention improves adhesion of the tyre on a wet road surface and in winter conditions.
4 cl, 3 tbl
SUBSTANCE: invention relates to automotive industry. Tread 14 comprises surface rubber layer 21 with Shore A scale hardness of 50-56 and inner layer 22 with Shore A scale hardness 2 units higher than that of layer 21. surface layer 21 is thicker at central zone 10A than at tread shoulder 10B. Shoulder inner layer thickness exceeds that of treat central part inner layer. Studs are fitted only in tread shoulder zones so that stud end extends outward from surface layer surface while its opposite end penetrates inside inner layer.
EFFECT: better grip at snow.
3 cl, 3 dwg, 1 tbl
FIELD: road vehicles.
SUBSTANCE: proposed tire has radial body with one or several breaker layers on place close to outer surface, and strengthening layer with nylon cord wound in spiral over breaker. It is desirable that tread belt of tire be formed by underlayer and outer layer, one placed on the other, elasticity and/or hardness characteristics of first layer remaining stable at temperatures within 20 and 110oC.
EFFECT: improved performance characteristics of tires.
23 cl, 4 tbl, 2 dwg