Vehicle tyres and tyre inflation and tyre changing and connecting valves to inflatable elastic bodies in general and devices or arrangements related to tyres (B60C)

B60   Vehicles in general(31835)
B60C              Vehicle tyres (manufacture, repairing b29); tyre inflation; tyre changing; connecting valves to inflatable elastic bodies in general; devices or arrangements related to tyres (testing of tyres g01m0017020000)(2097)
Rubber-based mixture and automotive tire // 2642072
FIELD: chemistry.SUBSTANCE: rubber-based mixture differs in that it contains at least the following components: from 5 to 100 phr of at least one polymer A of the following formula I): I) F-(P-Y-P-Sx)z-P-Y-P-F, where S is a sulfur atom, P is an elastomeric polymer chain obtained by the anionic polymerization of at least one diene with the conjugated double bonds, and optionally at least one vinylaromatic compound in the presence of two-functional initiator, Y is a dicarbanionic group obtained from the two-functional initiator, x independently is an integer for each group of Sx equal to or greater than 1, provided that at least for one of the group of Sx, x is selected from the numbers 2, 3, and 4, z is an integer from 1 to 160, each F independently is an end group selected from the group consisting of -H, -SH, -SOH, -SCl, -SSCl, -SO2H and -SO3H, and at least one filler.EFFECT: improved rolling resistance, improved wear properties, elasticity.12 cl, 1 tbl
Sulfur-coated rubber mixture and automobile tires // 2641751
FIELD: chemistry.SUBSTANCE: rubber mixture contains, at least, the following constituents: 40 to 100 parts of, at least, one natural and/or synthetic polyisoprene per 100 parts of rubber, 15 parts or more of, at least, one hydrocarbon resin per 100 parts of rubber formed from 50 to 100 wt % of the aliphatic monomers C5 and from 0 to 50 wt % of, at least, one additional monomer, wherein the hydrocarbon resin has a value of Q from 0.015 to 0.050[°C⋅mol/g], where Q=softening point [°C]/determined by centrifugation with an average Mc [g/mol], and wherein the hydrocarbon resin has a softening point in accordance with ASTM E 28 (ring and ball method) from 60 to 200°C, and 10-300 parts of, at least, one silicic acid per 100 parts of rubber.EFFECT: rubber mixture has a high level of performance in terms of rolling resistance and wet grip performance.9 cl, 1 tbl

ethod for regulating tire imprint area and tire for wheels of vehicles // 2641564
FIELD: transportation.SUBSTANCE: method for regulating the imprint area symmetry of a tire moving along a straight trajectory, with a camber angle of the wheels, different from zero, includes the following stages: reducing contact pressure acting on the tire (2) in the imprint area at an inner sidewall (in case of a negative camber angle of the wheels) or an outer sidewall (in case of a positive camber angle of the wheels); locating any midline (lm) of the tread band (9) of a tire, located with ensuring its conformity with the imprint area, essentially parallel to the ground. In accordance with the invention, a tire and a wheel for vehicles, in which the midline (lm) of the tread band (9) and the rotation axis (x-x) of the tire (2) form an angle (α) essentially equal to the absolute value of the camber angle (β) of the wheels, are developed as well. The invention also covers the method of manufacturing such tires, where an unvulcanised tire with a symmetrical profile is deformed during the vulcanization and shaping stage, until the specified angle (α), different from zero, is formed between any midline (lm) of the tread band (9) and the rotation axis (x-x) of the vulcanized tire (2).EFFECT: improved performance of tires.26 cl, 5 dwg
Silicate acid-containing rubber mixtures containing ether of ώ-mercaptocarbonic acid with polyhydric alcohols // 2641128
FIELD: chemistry.SUBSTANCE: rubber mixture contains, in each case, at least, one rubber, one sulfur-containing alkoxysilane, one silicic acid-based filler, and one ether ω-mercapto-C2-C6-carboxylic acid with polyhydric alcohols. In addition, the rubber mixture contains, at least, one crosslinking agent, additional fillers, antioxidants, heat stabilizers, light stabilizers, antioxidants, flame retardants, plasticizers, and other auxiliaries. Rubber mixtures are produced by multi-stage mixing. The rubber mixture is preferably cured at a temperature of 100 to 200 °C. Vulcanizates are especially tires and tire parts.EFFECT: increasing the composition efficiency.15 cl, 2 tbl

Pneumatic tire // 2640917
FIELD: automotive engineering.SUBSTANCE: pneumatic tire (1) includes transverse connecting grooves (3, 3a, 3b) and circumferential grooves (4). In the shoulder area of the protector part, a transverse connecting groove (3A) is located between the two V-shaped cross grooves (2A, 2b), neighbouring in the direction along the tire circumference, and runs from the tire edge in the direction of the equatorial plane (CL) of tire. In the central area of the protector part, the transverse connecting groove (3a) communicates with the V-shaped cross groove (2b) from the protruding side of the V-shaped profile of the pair of V-shaped cross grooves (2a, 2b) and does not communicate with the other V-shaped cross groove (2a) from this pair. The circumferential grooves (4) are located in the shoulder area of the protector portion and extend in the circumferential direction of the tire, and communicate with the V-shaped cross grooves (2) and the transverse connecting grooves (3).EFFECT: improved braking performance when driving on snow and performance when driving on wet roads.30 cl, 6 dwg

ethod of producing polydienes and polydiene copolymers with reduced cold flow // 2640800
FIELD: chemistry.SUBSTANCE: method comprises (i) polymerization of monomers with the formation of the reactive polymer, wherein the monomer includes a conjugated diene monomer, at a specified stage of polymerization using a coordination catalyst, and the said reactive polymer has a reactive end of the chain, and (ii) carrying out reactions of this reactive polymer with glycidyl ether. Also, a bound polymer and a tire component derived from a bound polymer are described.EFFECT: improved resistance of the bound polymer to cold flow.13 cl, 1 dwg, 1 tbl, 3 ex

Pneumatic tire tread and pneumatic tire with such tread // 2640666
FIELD: automotive engineering.SUBSTANCE: on the front walls (52, 53) of each block (5) of the tread (1) there are reinforcement sections (6) provided on the tire, where both angles (T1, T2) formed by two front walls having reinforcement sections (6) and an upper surface of the block are less than 90 degrees.EFFECT: improvement of tire performance on ice and snow.14 cl, 5 dwg, 1 tbl

Agricultural tyre // 2640293
FIELD: agriculture.SUBSTANCE: tyre (1) contains a frame (5), a protector (2) supported by the frame (5) and provided with cleats (4); a breaker (8) located between the frame (5) and the protector (2) and having external and internal layers (9, 10) located one above the other, each of them having metal cords (14) embedded in the rubber strip (15). In addition, the agricultural tyre (1) comprises two protector wedges (13), each located between the locally diverging lateral ends of the two protector layers (9, 10); and the two ends of each protector layer (9, 10) are covered by respective protective caps (16, 17), each made of rubber and bent around the corresponding end of the layer to form a U-shape.EFFECT: increased service life of the tyre.14 cl, 6 dwg

Improved protector // 2640292
FIELD: transportation.SUBSTANCE: tire protectoe has a thickness of PMU of the wear material and comprises, at least, two main grooves (3, 4) with a depth P1 close to or equal to PMU. These main grooves (3, 4) define the protruding element (2), at least, one auxiliary groove (5) with a depth P2, which is smaller than the depth P1 of the main grooves (3, 4). The said auxiliary groove (5) extends continuously through the entire protruding element (2) and comprises a bottom (50) of the groove. Each of the main and auxiliary grooves is oriented in the main direction along the circumference. There are a plurality of sipes (6), which are formed in the protruding element (2). Each of the said sipes comprises side portions (61, 62) formed one on each side of the auxiliary groove (5). The said side portions (61, 62) are connected to each other by a connecting part (63). The said connecting part (63) is formed radially inward with respect to the tread from the bottom (50) of the auxiliary groove (5). The connecting part (63) comprises a sipe portion (630) oriented in the main direction of the auxiliary groove (5), namely, forming an angle of at most 30 degrees with respect to the circumferential direction.EFFECT: improving the performance of the tire when driving on wet road.9 cl, 4 dwg
Treated fillers, compositions containing them, and products made from them // 2640075
FIELD: technological processes.SUBSTANCE: process comprises of (a) treating a suspension, which includes an untreated filler, that is not pre-dried, using a treating agent, thereby making a suspension of the treated filler, and (b) drying the treated filler suspension to produce a treated filler. The treating agent contains a polymer that has (i) the first group, which interacts with a raw filler, and (ii) the second group, which interacts with the rubber matrix, which incorporates the treated filler.EFFECT: invention improves compatibility of the filler with the polymer matrix, improves the technological viscosity and prevents the phase separation of fillers with high specific surface area and of the polymer matrix that improves dynamic and mechanical properties of rubber tires of light vehicles and truck tires.25 cl, 25 tbl
Allylamine-containing polymers with end carbinol groups // 2640041
FIELD: chemistry.SUBSTANCE: copolymer of butadiene and styrene is provided, containing at the beginning of the polymer chains tertiary amino groups of the formula (Ia) or (Ib), where R1, R2 are the same or different and are alkyl radicals, and also contain silane-containing carbinol groups of the formula (III) at the ends of the polymer chains or their metal salts or salts of semimetals, where R3, R4, R5 and R6 are the same or different and are hydrogen or an alkyl, alkaryl and aralkyl radical, A is a divalent organic radical, which may contain, in addition to carbon and hydrogen atoms, heteroatoms such as oxygen, nitrogen, sulfur and/or silicon. A method of producing these copolymers and variants for their use, including for the production of tires and various shaped articles, are also provided.EFFECT: copolymer according to the invention is well-developed and allows the production of tires and moulded articles with the improved performance characteristics.22 cl, 2 tbl, 3 ex

Pneumatic tire // 2639922
FIELD: transportation.SUBSTANCE: pneumatic tire (1a) in the central area comprises an equatorial plane wherein the first set of blocks (16a) is located, separated and formed by two first longitudinal grooves (24) and a plurality of the first transverse grooves (26a). The second set of blocks (20a) separated and formed by one second longitudinal groove (28) and a plurality of the second transverse grooves (30a) is located at the outermost portion in the transverse direction of the tire on each side in the transverse direction of the tire. An edge (22) is located between the first set of blocks (16a) and the second set of blocks (20a). The edge (22) is separated by at least one third longitudinal groove (32), wherein a plurality of slit-like cuts (34a) are formed in the first set of blocks (16a), the second set of blocks (20a) and the edge (22).EFFECT: improving the tire performance when braking on ice, while minimizing any reduction in performance when braking on snow.12 cl, 7 ex, 1 tbl
ethod for analyzing aging and method of determining chemical state // 2639914
FIELD: physics.SUBSTANCE: method for analyzing the aging of a rubber mixture includes irradiating a rubber composition with a metal coating formed on it with a thickness of 100 Ǻ or less high intensity X-rays having an energy in the range of 4000 eV or less, and measuring the X-ray absorption from absorption spectra for the aging analysis of a rubber compound for a tire.EFFECT: accuracy of the evaluation of the chemical state of the rubber surface during aging increases.8 cl, 10 dwg, 5 tbl

Pneumatic tire // 2639840
FIELD: automotive engineering.SUBSTANCE: pneumatic tire (1) comprises a plurality of small blocks (20) which are defined and formed by a plurality of rectilinear longitudinal narrow grooves (16) and a plurality of transverse narrow grooves (18) which are in communication with the longitudinal narrow grooves, and the rows (22) of small blocks with small blocks aligned along the longitudinal direction of the tire and formed between the adjacent longitudinal narrow grooves. Each of the small blocks has a surface area which is different from the surface area of at least one small block relating to the adjacent row of small blocks on at least one side with respect to the lateral direction of the tire and having an overlap area in the tire transverse direction (CA). Small blocks have a surface area of at least 20 mm2 and no more than 400 mm2. The tire also comprises one longitudinal main groove which is wider than longitudinal narrow grooves, and a plurality of lug grooves which are wider than the transverse narrow grooves.EFFECT: improvement of tire braking performance on ice, improvement of steering stability on snow.9 cl, 8 dwg 1 tbl

Pneumatic radial tire // 2639829
FIELD: automotive engineering.SUBSTANCE: tire (1) comprises a reinforcing tape of a shield layer which is formed of polyethylene terephthalate cords, secant modulus of which is from 2.0 to 2.5 mN/dtex⋅% at 160°C at relative elongations from 3 to 5%; which strength during thermal shrinkage exceeds 2 mN/dtex at 177°C (according to ASTM D885) and which are obtained by their relaxation by 1-3% at 220-240 °C and subsequent cold drawing by 1-5% at 140-200 °C.EFFECT: providing durability at high speeds and reduction of time flat sections in the tire as a result of cooling during parking after driving at high speed.7 cl, 2 dwg
Pneumatic tire // 2639464
FIELD: automotive engineering.SUBSTANCE: pneumatic tire has tread in which a vulcanized rubber composition is contained, comprising per 100 parts by weight of elastomer (phr) (wt % per 100 elastomer wt %): (A) from about 50 to about 90 phr polymerized in solution styrene-butadiene rubber having glass transition temperature (Tg) is from -65°C to -55°C; (B) (B) from about 50 to about 10 phr of polybutadiene, wherein cis -1.4 content is greater than 95 percent and Tg is from -80 to -110°C; and (C) from 30 to 80 phr combination of oil and terpene-phenolic resin, wherein Tg is over 100°C.EFFECT: improved wear resistance, rolling resistance and tire slippage on wet road.10 cl, 3 tbl
Coagulant and set for sealing punctures in tires with its application // 2638387
FIELD: chemistry.SUBSTANCE: coagulant for the puncture sealing fluid comprises, at least, one component selected from the group consisting of vegetable protein, pectin, cellulose, phospholipid, and fatty acid glyceride. The amount of components per 100 pts wt of fluid for sealing punctures in tires is 16 pts wt or more. A coagulant is also described that contains vegetable protein, pectin, cellulose, and fatty acid glyceride. The weight ratio of vegetable protein: pectin: cellulose: fatty acid glyceride is 10-25:30-50:25-35:5-15 and the total amount of vegetable protein, pectin, cellulose, and fatty acid glyceride is 100 pts wt of fluid for sealing the punctures in tires is 8 pts wt or more. A set for sealing punctures in tires is also described, comprising a fluid for sealing punctures in tires and a coagulant.EFFECT: coagulant and a set for sealing punctures in the tires have an excellent coagulation ability.14 cl, 3 tbl

Automotive tire // 2638346
FIELD: transportation.SUBSTANCE: automotive tire comprises a wear surface intended for contact when rolling on a support, wherein studs are embedded in this wear surface. In addition to the other elements of the tread pattern, the wear surface comprises an amortization zone around the stud containing projections of the wear surface whose height from the wear surface does not exceed the height of the farthest protruding point of the stud tip when viewed in the radial direction of the tire, wherein this amortization zone is formed in such a way that it absorbs impacts or contact of the stud with the roadway by perceiving a part of the load distributed over the surface area of the stud tip, and by upsetting or adjusting the stud projection in the radial direction of the tire beyond the outermost portion of the wear surface.EFFECT: reduced wearing of the studs, wear surface and roadway, reduced noise.9 cl, 4 dwg

icrogel-containing protector mixture for winter tires // 2637906
FIELD: chemistry.SUBSTANCE: vulcanizable rubber mixture comprises, at least, the following components: 100 pts wt of the oil-free rubber matrix that contains a) 15 to 79 pts wt of L-SBR solution styrene butadiene rubber, which does not contain oil with a glass transition temperature Tg(L-SBR) in the range of -70 to -10°C, b) 20 to 75 pts wt of 1,4-cis-polybutadiene BR, which does not contain oil with a glass transition temperature Tg(BR) in the range of -95 to -115°C, c) 1 to 37.5 pts wt of natural rubber NR, oil-free and/or synthetic polyisoprene IR with a glass transition temperature Tg(NR) in the range of -50 to -75°C; hydroxyl group-containing microgel based on polybutadiene; hydroxyl group-containing oxide filler; polysulphide-containing alkoxysilane; a curing agent.EFFECT: invention makes it possible to increase the resistance to reversion during vulcanization of the rubber mixture, to produce a rubber mixture with optimum adhesion to ice-covered and snow-covered road, as well as low rolling resistance and high abrasion resistance.27 cl, 1 dwg, 55 tbl

Tread bracelet of winter tire with three-dimensional gutters // 2637273
FIELD: automotive engineering.SUBSTANCE: tread bracelet (1) of the tire comprises longitudinal and transverse grooves (3, 4) bounding blocks (5) protruding radially upward from the surface (2) of the base of the tread bracelet(1); and gutters (9) formed in at least some of the blocks (5) and extending radially inwardly from the upper surface (8) of the corresponding block (5) forming the rolling surface of the tread bracelet (1). Each gutter (9) has a wavy configuration (W1, W2, W3) when viewed from the corresponding block (5) in any one of the three mutually perpendicular planes (XY, ZX, YZ) formed by the longitudinal axis (x), the transverse axis (y) and the radial axis (z).EFFECT: increase the stiffness of the tire tread without degrading the quality of its adhesion to the snow surface.13 cl, 8 dwg

Wheel valve device with safety valve cap // 2637146
FIELD: automotive engineering.SUBSTANCE: invention relates to the wheel valve device of the actual pressure matching device in at least one tire with specified pressure in the tire, with a feed connection made on the body, in which either setting of the specified pressure in the tire is carried out to match the actual pressure in the tire with the given pressure in the tire, or deaeration if the actual tire pressure corresponds to specified tire pressure. According to the invention, the safety cap of the closing valve of at least the control membrane and the valve stem rest against the body or against the ring located on the body. The safety cap of valve contains at least one recess closed by deaeration element, in order to provide load of at least one control membrane with atmospheric pressure. In this way, the safety cap of the valve prevents the ingress of coarse impurities and moisture and thereby protects the control membrane and the valve stem, in particular, during operation of a vehicle on the road. At least one recess closed by the deaeration element ensures the influence of atmospheric pressure on the control membrane.EFFECT: increased reliability of the wheel valve also during operation of the vehicle on the road under the action of dirt, water, ice and snow.10 cl, 2 dwg

Tire for vehicle wheels // 2637071
FIELD: transportation.SUBSTANCE: wheel comprises: a rim (13) and a tire (2) mounted on the rim (13) and inflated to the working pressure; parts (9a, 9b) of a tread band (9) of the tire (2), end in the axial direction, are equally spaced in the radial direction from the rotation axis (X-X) of the wheel (1), and the middle circumferential line (14) of the tread band (9) is displaced in the axial direction by a predetermined distance (D) relative to the median plane (PW) of the wheel (1). The wheel (1) is mounted on a car (C) at a camber angle substantially equal to zero, and with the middle circumferential line (M) displaced towards the outside of the car (C) with respect to the median plane (PW). The tread band (9) has a symmetrical profile with respect to the middle circumferential line (14). The tire has a maximum radius (R) defined on the middle circumferential line (14).EFFECT: improving the performance of tires.23 cl, 3 dwg

Pneumatic tire for oversize vehicle // 2636714
FIELD: automotive engineering.SUBSTANCE: pneumatic tire comprises two collars intended to come into contact with the rim, a carcass reinforcement anchored to each collar by a reinforcing collar around the circumference of the element. And each collar has in its composition an internal annular insert. Wherein, the specified internal annular insert is formed by rubber mixture that includes elastomeric matrix on basis of polyisoprene with predominance of 1,4-CIS-links of isoprene bonds, from 45 to 60 mass parts per hundred mass parts of elastomer, reinforcing filler, including from 43 to 55 mass parts per hundred mass parts of elastomer, reinforcing inorganic filler with specific surface, determined by BET method (Brunauer-Emmett-Teller), composing from 155 m2/g to 185 m2/g, binder to bind reinforcing inorganic filler with elastomer and vulcanizing compound.EFFECT: increase the service life of tire.17 cl, 1 dwg, 2 tbl, 1 ex

Wheel with pneumatic assembly // 2636635
FIELD: transportation.SUBSTANCE: wheel assembly includes a rigid wheel and an airless flexible tire with the specific performance of a pneumatic tire. The rigid wheel includes a central portion and a plurality of circumferentially spaced fastening members removably attached to the radially outer edge of the central portion. The tire is mounted on the wheel and engages the fastening elements so that the tire portions that do not engage the fastening members are separated radially from the wheel by the space. The tire is designed such that the tire portions that do not engage the fastening members are bent inward towards the wheel when subjected to the ground engaging pressure. The tire may include one or more tensile elements mounted on the tire to increase the structural strength and elasticity of the tire.EFFECT: minimization of soil structure destruction.20 cl, 8 dwg

Stud pin and pneumatic tire // 2636624
FIELD: automotive engineering.SUBSTANCE: stud pin, designed to be installed in the mounting hole at the pneumatic tire tread section, comprises: the recessed base section, extending in the direction of travel and fixing the stud pin in the tread section, clamping by the lateral surface of the mounting hole for the stud pin; the top section, connected to the end section of the recessed base section in the direction of travel, protruding beyond the tread section and coming into contact with the road surface, at that the top section have the top tip surface perpendicular to the recessed base section travel direction; and the section, connecting the top section with the recessed base section and having the cross-sectional area in the plane perpendicular to the recessed base section travel direction, that is larger than the area of the top tip surface, at that the top section contains the pair of inclined surfaces, extending from two opposite positions of the top tip surface to the recessed base section.EFFECT: increase of the stud pin fastening strength in the tire tread, while maintaining the tire traction performance on ice.25 cl, 11 dwg, 3 tbl

ethod to determine pressure in tire // 2636242
FIELD: measuring equipment.SUBSTANCE: control unit is fluidly connected to the tire valve through the fluid control loop. The air pressure in the fluid control loop is measured by the pressure sensor. The method also includes determination if there is the leakage in the fluid control loop and provision of the leakage compensation pressure. The tire pressure is calculated by summing the air pressure in the fluid control loop and the leakage compensation pressure.EFFECT: increased measuring accuracy of the actual air pressure in the tires.17 cl, 3 dwg

Rubber composition for tyres and studless winter tyre // 2635608
FIELD: chemistry.SUBSTANCE: rubber composition for a tyre contains 100 wt parts of diene rubber (A); 30 to 100 wt parts of carbon black and/or a light filler (B) and 0.3 to 30 wt parts of cured product (C). At that, the cured product (C) is obtained by curing a cross-linkable oligomer or polymer (c1) immiscible with the diene rubber (A). The JIS A hardness of the cured product (C) is from 3 to 45. The cross-linkable oligomer or polymer (c1) is a polymer or copolymer based on polyether.EFFECT: creation of a rubber composition for a tyre, allowing to obtain a tyre having excellent performance characteristics on ice and excellent wear resistance.12 cl, 4 dwg, 4 tbl, 21 ex

Pneumatic tyre and method of production // 2634736
FIELD: transportation.SUBSTANCE: pneumatic tire includes an elastomeric frame. The elastomeric frame includes a crown portion, opposing side walls and bead regions formed along the side walls at a distance relative to the crown portion. The bead regions include at least one bead reinforcement element, such as a bead core and/or bead liner, which is at least partially formed of carbon fibers.EFFECT: improve the tyre performance.24 cl, 15 dwg

Tire made with possibility of rolling in flat state, comprising hybrid framework layer // 2634362
FIELD: transportation.SUBSTANCE: tire (10) made with the possibility of rolling in the flat state and comprising self-supporting side strips has framework reinforcement (32) having at least one reinforcing element (36) comprising at least one aramid multifilament thread (54) and at least one polyester multifilament thread (56), twisted together.EFFECT: improving the characteristics of tires able to move in the flat state.10 cl, 4 dwg, 2 tbl

Tread containing sculpture elements with overlapping layer // 2634361
FIELD: transportation.SUBSTANCE: tread (1) is made of a rubber material and contains a plurality of notches (3) defined by opposing walls (5) forming the sidewalls of relief elements (7) of the tread. Each of the sidewalls intersects the rolling surface, forming an edge (9). At least one sidewall (5) of the relief element is partially or completely formed by an overlapping layer (11), starting from the edge (9) corresponding to this side wall. The material of this layer (11) has a modulus of elasticity exceeding the modulus of elasticity of the rubber material forming the tread. The relief element (7) has a recess (12) in its sidewall, wherein this recess is limited by the overlapping layer (11). The relief element (7) has a width W, wherein the depth P of the recess is at least 10% of the width W of the element (7) and less than or equal to 40% of this width W. The volume of the recess (12) is less than 10% of the volume of the relief element (7).EFFECT: better grip of the tire tread on both snowy and icy roads.5 cl, 8 dwg

Pneumatic tyre // 2633457
FIELD: automotive engineering.SUBSTANCE: tread pattern includes a plurality of central ground-engaging grooves (14), spaced along the circumference of the tyre and intersecting the equatorial line of the tyre; a plurality of shoulder ground-engaging grooves (12A, 12B), disposed along the circumference of the tyre in the spaces between the plurality of central ground-engaging grooves in the circumferential direction of the tyre and extending outwards in the transverse direction of the tyre. The inner end in the transverse direction of the tyre is located outside the end of the central ground-engaging groove in the transverse direction of the tyre; a pair of longitudinal primary grooves (11A, 11B) extending along the entire circumference of the pneumatic tyre over the ondulating profile, and the ends of the central ground-engaging grooves and the inner ends of the plurality of shoulder ground-engaging grooves in the transverse direction of the tyre are alternately connected to a pair of longitudinal primary grooves (11A, 11B); and a longitudinal secondary groove (10) located on the equatorial line of the tyre along the entire circumference of the pneumatic tyre and intersecting the central ground-engaging grooves.EFFECT: improving the resistance to warming up in the running area in the central zone of the tread.16 cl, 8 dwg, 2 tbl

Pneumatic tire // 2633451
FIELD: transportation.SUBSTANCE: pneumatic tire comprises a plurality of central soil-engaging grooves arranged at regular intervals along the tire circumference that extend through the equatorial line of the tire and comprise a first rotation groove section and a second rotation groove section; a plurality of shoulder soil-engaging grooves arranged at defined intervals between the plurality of central soil-engaging grooves along the tire circumference and extending to the outside in the transverse direction of the tire, the inner end in the transverse direction of the tire being positioned externally with respect to the end of the central soil-engaging groove in the transverse direction of the tire; a pair of longitudinal main grooves to which the ends of the central ground loosening grooves are connected in series, and the inner ends of the plurality of shoulder soil-engaging grooves in the transverse direction of the tire; and a longitudinal secondary groove located along the entire circumference of the pneumatic tire, intersecting the central soil-engaging grooves.EFFECT: increasing the resistance to warming-up in the running area in the central tire tread zone while preserving the characteristic of stone-grasping resistance.9 cl, 7 dwg, 3 tbl

Pneumatic tire for heavy-loaded vehicles // 2633447
FIELD: transportation.SUBSTANCE: pneumatic tire comprises a tread pattern including central ground-engaging grooves, shoulder ground-engaging grooves, a pair of longitudinal primary grooves having a wavy profile due to successive connection to the ends of the central ground-engaging grooves and the ends of the shoulder ground-engaging grooves and having a smaller width than the shoulder ground-engaging grooves, central blocks defined by the central ground-engaging groove and the longitudinal primary grooves, and a longitudinal secondary groove passing along the tire circumference, so as to divide the central blocks into zones. The breaker part includes two or more pairs of breakers. The ratio of the width W8 of the breaker having a smaller width in each pair of breakers and the width W7 of the breaker having a larger width is 0.75 or more and 0.90 or less. Each of the fourth and subsequent breakers from the innermost breaker in the radial direction of the tire to the outside in the tire radial direction has a width equal to or larger than the maximum width WB of the central blocks in the transverse direction of the tire.EFFECT: improved traction characteristics and increased strength of the breaker.18 cl, 7 dwg, 5 tbl

Reinforce strip of belt ply in pneumatic tire // 2633147
FIELD: automotive engineering.SUBSTANCE: reinforce strip of belt ply is a ready-to-use plain weave fabric and consists of the main threads (3) in the form of hybrid cords and textured weft yarns (2).EFFECT: reinforce strip of belt ply for pneumatic tires eliminates the calendering and preparation of belts by eliminating the need for rubber coating and reducing rolling resistance and fuel consumption.14 cl, 2 dwg

Pneumatic tyre for high-load vehicles // 2633053
FIELD: automotive engineering.SUBSTANCE: tread pattern contains shoulder ground-engaging grooves (12A, 12B), which are open at the ends and in contact with the ground (E1, E2); central ground-engaging grooves (14), each of which has opposite ends; longitudinal primary grooves (11A, 11B), each having an undulating profile at the connecting ends of the central ground-engaging grooves (14) and at the inner ends of the shoulder ground-engaging grooves (12A, 12B) in the transverse direction of the tyre; and central blocks (20), indicated by the central grooves (14) and a pair of longitudinal primary grooves (11A, 11B). The width of the longitudinal primary grooves (11A, 11B) is less than the width of the shoulder ground-engaging grooves (12A, 12B). The central ground-engaging grooves (14) are inclined relative to the circumferential direction and the transverse direction of the tyre, and each has a third rotatable groove portion (14a) and a fourth rotational groove portion (14b) that extend in different directions in the circumferential direction of the tyre.EFFECT: improved traction characteristics and increased wear resistance in the central zone of the tyre tread.16 cl, 11 dwg, 3 tbl

Pneumatic tyre for high-load vehicles // 2633049
FIELD: automotive engineering.SUBSTANCE: tread pattern includes a pair of longitudinal primary grooves (15, 17) having an ondulating profile and extending in the circumferential direction of the tyre; central ground-engaging grooves (14); central blocks (21); and longitudinal secondary grooves (23), extending in the zones of the central blocks (21) and extending to the central ground-engaging grooves (14). Each of the central ground-engaging grooves (14) has two turning portions (14a, 14b) of the groove, bent to form a curved profile or a non-lineal profile. The longitudinal secondary grooves (23) extend in such a way that they are inclined relative to the direction along the circumference of the tyre. The angle (θ4) of slope of the longitudinal secondary grooves (23) with respect to the circumferential direction of the tyre is different from the angle (θ1) of slope of the portions of the longitudinal primary grooves (23) with respect to the direction along the circumference of the tyre.EFFECT: increased heat resistance and resistance of the tyre to chipping.15 cl, 7 dwg, 10 tbl

Pneumatic tyre for high-load vehicles // 2633048
FIELD: automotive engineering.SUBSTANCE: tyre tread includes shoulder ground-engaging grooves (10), that are open at the edges; central ground-engaging grooves (14), having both ends; longitudinal primary grooves (12), formed with an ondulating profile and alternately connected by the ends of the central ground-engaging grooves to the inner ends of the shoulder ground-engaging grooves in the transverse direction of the tyre; central blocks (16), that are formed in one row, defined by the central ground-engaging grooves and a pair of longitudinal primary grooves; and longitudinal secondary grooves (20), formed in the areas of the central blocks and connecting the central ground-engaging grooves, that are disposed adjacent to the circumferential direction of the tyre. The longitudinal secondary grooves have bending portions (21a, 21b), and the central ground-engaging grooves have bending portions (14a, 14b) of the ground-engaging grooves and are connected to the longitudinal secondary grooves on the bending portions of the ground-engaging groove.EFFECT: prevention of heel and toe wear of the tread with simultaneous improvement of traction characteristics.17 cl, 6 dwg, 6 tbl

Pneumatic tyre for high-load vehicles // 2633047
FIELD: automotive engineering.SUBSTANCE: tyre tread pattern includes: shoulder ground-engaging grooves (11, 13), extending outwardly in the transverse direction of the tyre and extending to the edges, contacting with the road surface; a pair of longitudinal primary grooves (15, 17); central ground-engaging grooves (14); a plurality of central blocks (21), defined by the central ground-engaging grooves and a pair of longitudinal primary grooves, aligned in the circumferential direction of the tyre; and longitudinal secondary grooves (23), extending in the circumferential direction of the tyre in the zones of the central blocks and extending to the central ground-engaging grooves, adjacent to the central blocks. The longitudinal secondary grooves extend in the circumferential direction of the tyre, changing their positions in the transverse direction of the tyre, and each includes third rotational portions of the groove (23a-23d), having a curved profile or a non-lineal profile.EFFECT: increased resistance to stone jams, and heat resistance.12 cl, 6 dwg, 6 tbl

Pneumatic tyre for high-load vehicles // 2633046
FIELD: automotive engineering.SUBSTANCE: tread pattern includes shoulder ground-engaging grooves (10), that are open at the edges; central ground-engaging grooves (14), which havetwo ends; longitudinal primary grooves (12), each of which has an ondulating profile due to the alternate connection to the ends of the central ground-engaging grooves and the inner ends in the transverse direction of the tyre of the shoulder ground-engaging grooves; and the central blocks (16), defined by the central ground-engaging grooves and a pair of longitudinal primary grooves. The breaker (6) of the tyre includes first transverse layers (6a) of the breaker and second transverse layers (6b) of the breaker. The ratio of the width WB of the central blocks in the transverse direction of the tyre and the width W1 of the breaker from the breaker layer, having the smallest width in the transverse direction of the tyre, from the first transverse breaker layers is in the range of 0.6 to 0.9.EFFECT: improved traction characteristics of the tyre and increased resistance to cutting.14 cl, 7 dwg, 7 tbl

Harvesting vehicle converted for half-track // 2633044
FIELD: transportation.SUBSTANCE: harvesting vehicle comprises a leading bridge and a controlled bridge, on which a half-track on rubber-reinforced tracks and controlled wheels, and shielding panels, respectively, are mounted. Each controlled wheel is equipped with a support, the base of which is made in the form of a ski and is closed at the top in the front part, in the motion direction, with a streamlined casing with sidewalls forming in the rear support part a gate into which the controlled wheel enters until the stop welded to the support base and to the sidewalls of the streamlined casing. The vertical projection of the controlled wheel axis divides the support base into two unequal parts, the front part of which is longer.EFFECT: improved passability of the harvesting vehicle.7 cl, 8 dwg

Pneumatic tyre for high-load vehicles // 2633030
FIELD: automotive engineering.SUBSTANCE: tread pattern of a pneumatic tyre contains: shoulder ground-engaging grooves (10), open at the edges; central ground-engaging grooves (14); a pair of longitudinal primary grooves (12), having an ondulating profile and a narrower width of the groove than that of the shoulder ground-engaging grooves. The portion, that is curved outward in the transverse direction of the tyre, is connected to the shoulder ground-engaging grooves, and the portion, that is bent inward in the transverse direction of the tyre, is connected to the central ground-engaging grooves; and the central blocks (16), defined by the central ground-engaging grooves and longitudinal primary grooves. The longitudinal primary grooves are provided on opposite sides in the transverse direction of the tyre in the zones spaced from the center line at a distance of 30% to 60% of half the width T of the tread.EFFECT: improvement of traction characteristics and improvement of wear resistance of the central zone of the tread.12 cl, 7 dwg, 5 tbl

Stud and tire, containing the specified stud // 2633014
FIELD: automotive industry.SUBSTANCE: stud is meant to be used on the tire. The stud contains: the housing 1, that is immersed in the tire tread and the wear-resistant element 2, that is disposed, projecting outwardly at one end of the housing onto the tire tread surface. The housing contains the main body of the stud 3 and the flange 4. The main body of the stud accepts the linearly symmetrical shape with two axes of symmetry A and B, which are perpendicular to each other. The flange accepts the linearly symmetrical shape, having at least one axis of symmetry. The flange axis of symmetry, on the axial direction of which the flange projection has the maximum length, is taken as the longitudinal axis of symmetry C, and the maximum length of the flange projection in the direction perpendicular to the longitudinal axis of symmetry C will be shorter, than the flange projection length on the longitudinal axis of symmetry C. The lengths of the stud main body projection on the axis of symmetry A and B are accepted equal to La and Lb respectively, and the stud main body projection length on the axis of symmetry A satisfies the expression La≥Lb, then the axis of symmetry A and the longitudinal axis of symmetry C of the flange are generally extended in the same direction.EFFECT: improved driving and braking performances at the ice and snow-covered pavements, as well as increased stud resistance to breaking off.5 cl, 13 dwg, 5 tbl
Nipple automotive tire (tire valve) with pneumo-hydraulic automatic autonomous pumping // 2632680
FIELD: automotive engineering.SUBSTANCE: nipple of the car tire has a pumping chamber, bounded by the inner and outer walls of the elastic material, the space between them is filled with liquid or similar material. The nipple works by transferring the pressure force from the outer wall to the inner wall as the pressure in the tire increases, which leads to an increase in the pressure in the pumping chamber and the supply of additional air to the tire. As the area of the outer and inner walls is different, and the liquid is not compressible, the transfer of the pressure force from the outer wall to the inner wall occurs with increasing.EFFECT: ensuring the possibility of swapping the tires of the car due to short-term pressure changes caused by the passage of various irregularities.1 dwg
Rubber material with barrier material from cycloolephine copolymers // 2632584
FIELD: chemistry.SUBSTANCE: rubber material is described, provided with a barrier material in the form of a copolymer, and a tire including a rubber material. The copolymer is produced by metathesis polymerization with a ring opening a) of, at least, one first olefin monomer selected from the group consisting of cyclic olefin monomers with, at least, one endocyclic double carbon-carbon bond, in the alpha position to which there is no tertiary carbon atom substituted by A hydrogen atom, and b) of, at least, one second olefin monomer selected from the group consisting of cyclic olefin monomers with one endocyclic carbon-carbon double bond. In, at least, one alpha position, a tertiary carbon atom substituted by a hydrogen atom is present to the double bond. The copolymer is, at least, partially oxidized and the copolymer is produced without using polycyclic olefin monomers with, at least, two carbon-carbon double bonds or the amount of such monomers is less than 1 mol % in terms of the sum of the monomers.EFFECT: proposal of alternative barrier materials for rubber products, in particular pneumatic tires, characterized by the possibility of simple, economical and effective use or possessing optimal or improved gas barrier properties.19 cl, 4 tbl, 3 ex
Amino-containing polymers with end carbinol groups // 2632425
FIELD: chemistry.SUBSTANCE: diene polymers contain at the beginning of the polymer chains the tertiary amino groups of formula (II), and also have the silane-containing carbinol groups of formula (III) d as the metal salts at the ends of the polymer chains. Moreover, R1, R2 are the same or different and are alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals, which may contain heteroatoms such as oxygen, nitrogen, sulfur and/or silicon. In the above mentioned formulas (II) and (III), Z is the divalent organic radical, which may contain, besides, the carbon and hydrogen atoms, heteroatoms such as oxygen, nitrogen, sulfur and/or silicon. Moreover, R3, R4, R5, R6 are the same or different and are hydrogen, alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals, which may contain heteroatoms such as oxygen, nitrogen, sulfur and/or silicon.EFFECT: expansion of application field.21 cl, 2 tbl, 3 ex

Pneumatic motor tire // 2632243
FIELD: automotive engineering.SUBSTANCE: in each half of the tread there are two pairs (2, 3) of rows of blocks separated from each other by first circumferential grooves (4, 5), circling around the circumference and formed at the maximum depth of the profile. Between the rows (6, 7, 8, 9) of the blocks, in each pair of rows of blocks, second circumferential grooves (10, 11) are made that are narrower than the first circumferential grooves (4, 5) and run in the depth less than the maximum profile depth. All transverse grooves (6b, 7b, 8b, 9b) have a depth varying along their extent so that their bottom, if viewed in cross section, passes along a curve that is slightly curved in S-shape. The depth of the transverse grooves (6b, 7b, 8b, 9b) at the points of their intersection with the first circumferential grooves (4, 5) or at their ends on the outer arms (20) of the tire corresponds to the maximum depth of the profile. And, the depth of the transverse grooves (6b, 7b, 8b, 9b) in the areas of intersection with the second circumferential grooves (10, 11) corresponds to the depth of these circumferential grooves (10, 11).EFFECT: improved grip and steering performance of the tires on snowy roads.12 cl, 3 dwg
Sulfur cross-linked rubber mixture and pneumatic automotive tire // 2632242
FIELD: automotive engineering.SUBSTANCE: rubber mixture contains at least the following constituents: 60 to 100 parts of at least one butadiene rubber per 100 parts of rubber and 51 parts or more of at least one hydrocarbon resin per 100 parts of rubber which consists of aromatic monomers in 30-100 wt %. The automobile tire contains a rubber mixture, at least in the tread.EFFECT: improvement of tire performance due to the dependence of the rolling resistance properties of the tire on the adhesion properties of the tire to the wet road surface, while improving or maintaining the discontinuous properties.10 cl, 1 tbl
Hybrid reinforcing member // 2632040
FIELD: automotive engineering.SUBSTANCE: reinforcing member is a hybrid cord consisting of at least one low-modulus thread having an elastic modulus of not more than 100 mN/(tex⋅%) and at least one high-modulus thread having an elastic modulus of at least 200 mN/(tex⋅%), and the hybrid cord has an adhesion impregnation. One or more low-modulus threads have a total linear density of not more than 550 dtex, preferably not more than 250 dtex. One or more high-modulus threads have a total linear density of not more than 550 dtex, preferably not more than 250 dtex. Hybrid cord is characterized by tensile elongation of at least 5%. The invention also discloses a method for producing such a reinforcing member and its use.EFFECT: reduction of rolling resistance of the tire, ensuring its durability and increasing the reliability of the tire.13 cl, 3 tbl

System and method of indirect detection of tires insufficient pressure // 2631722
FIELD: automotive engineering.SUBSTANCE: system (1) for detecting pumping state of at least one of the tires (2, 3) of the motor vehicle steering wheels (R11, R12) comprises: the first measurement instruments (11) of a transverse moment (TAPP) applied to the steering wheels, the second instruments (12) of the steering wheel rotation angle measurement (α), the third instruments (13) of the vehicle speed measurement (V). The system also comprises first computing instruments (14) for calculating the check transverse moment (TREF) depending on the measured steering wheel rotation angle (α) and the vehicle speed (V) and the instruments (15) comparing the applied transverse moment (TAPP) measured by the first measurement instruments (11), and the check moment (TREF) computed by the first computing instruments (14).EFFECT: increased reliability of the system for determining tire air pressure.11 cl, 6 dwg

Tread for tire of driving wheel axle of heavy motor trucks and tire // 2631368
FIELD: automotive engineering.SUBSTANCE: tread contains a plurality of circumferential grooves (2) limiting at least three ribs (4, 5, 6). The tread (1) is limited in the axial direction by two lateral rows (7, 8). Each rib (4, 5, 6) has a lot of notches (41, 51, 61), made for, at least, partial closure during the passage through the area of contact with the road surface. These notches open to each side of the rib, forming two edges, and have a depth at least equal to 50% of the height of the rib. The notches (41, 51, 61) pairwise limit the elementary volume (40, 50, 60) of the rib, and also the elementary contact surface (400, 500, 600). Each elementary volume (40, 50, 60), limited by two notches of one rib, includes the volume of recess (42, 52, 62) opening to the contact side in new condition. This volume of the recess has a total area on the rolling surface of at least 0.4% and not more than 1.5% of the area of the elementary contact surface (400, 500, 600). The volume of the recess (42, 52, 62) has a depth of at least equal to half the depth of the grooves. The volume of the recess is determined in such a way that it remains open during passage through the contact area to trap liquid that may be present on the road.EFFECT: improved tread grip with wet covering while maintaining wear resistance.11 cl, 2 dwg
 
2551294.
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