Characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping (B60C11/13)

B60   Vehicles in general(31835)
B60C11/13                     Characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping(68)

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

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

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

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

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

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

Pneumatic tyre // 2628551
FIELD: automotive engineering.SUBSTANCE: tire tread has a ribbed pattern that includes at least four major grooves (11, 12) and at least five rows of contact areas (10, 20, 30). A plurality of curved grooves (21), each having a curved shape, are formed on an intermediate contact area (20) located on the inside of each main groove (12) of the shoulder region. Each of the curved grooves (21) has one end part opening to the main groove (12) of the shoulder region and the other end part closed on the intermediate contact area (20). Each of the curved grooves (21) consists of the first inclined area of the groove extending from the open end part to the curved part and the second inclined area of the groove extending from the curved part to the closed end part. The direction oriented from the open end part of the first inclined area of the groove to the curved part coincides with the rotation direction (R) and the second inclined area of the groove is bent towards the first inclined area of the groove. The curved part serves as a vertex.EFFECT: uneven wear of the tire is suppressed while driving along a circular path and the increase in noise after wear is prevented.13 cl, 6 dwg, 1 tbl

Thick protector for construction machinery // 2614401
FIELD: transport.SUBSTANCE: invention relates to automotive tire. Tread comprises blocks (3) in the central part and the boundary edges (2, 4). Every boundary edge (2, 4) has numerous deepenings (21, 41) forming saddles. Each saddle is limited by the walls oriented in the transverse direction over its entire height, and the wall, oriented in the circumferential direction. Each saddle (21, 41) has a geometry suitable for receiving at least the end part of the central zone with the backlash Ac (measured in the circumferential direction) and the transverse gap AT (as measured in the transverse or axial direction). These Ac and AT gaps are determined so as to ensure that under normal operating conditions of the tire provided with the noted tread, the end part (302, 304) of the block central zone will be at least partially in contact with at least one of the walls of each saddle (21, 41) oriented in the transverse direction, thereby preventing the contact of each of the blocks (3), the ends of which are locked in these recesses, with the adjacent blocks of the central row.EFFECT: invention provides an improved tire traction characteristics with the ground, as well as increase strength and the tire tread durability.7 cl, 4 dwg

Tread containing sculptural elements coated with impregnated fibers compound // 2614375
FIELD: transportation.SUBSTANCE: tread for a pneumatic tyre comprises a plurality of sculptural elements, including the lateral sides and the contact surface intended for performing the contact with the road during the movement of the pneumatic tyre provided with said tread. At least one edge forms the contact boundary of the contact surface with the road. A plurality of cutouts in the form of a track and / or a cut also is represented, wherein said cutouts are bounded by the lateral sides disposed opposite one another. Each sculpture element is formed by at least one first rubber mixture called basic mixture. In the sectional view of a plane normal to the rotation axis of said pneumatic tyre and intersecting at least one contact surface sculptured element, wherein one of the cutouts adjacent to said contact surface is coated, at least partially, with the coating layer. The coating layer comprises a plurality of woven or non-woven fibers that are long fibers with the length greater than 50 mm.EFFECT: improved characteristics of pneumatic tyres on wet surfaces.32 cl, 9 dwg, 3 tbl
Pneumatic tyre // 2608550
FIELD: motor industry.SUBSTANCE: invention relates to automotive industry. Tread comprises inner and outer edges, of internal and external central main grooves passing in longitudinal direction, located on both sides of tire equator and limiting central area between them, inner and outer shoulder main grooves passing in longitudinal direction, arranged axially outside from internal and external central main grooves, two medium areas, including inner middle area, limited by inner central main groove and inner shoulder main groove, and outer middle area limited by outer central main groove and outer shoulder main groove, two shoulder areas. Outer shoulder main groove has width smaller than that of other main grooves. Outer middle area has width exceeding that of inner middle area. There are also shoulder transverse grooves, each of which passes from outer edge to tire equator beyond outer shoulder main groove limits.EFFECT: improved stability of steering and uneven wear resistance while maintaining drainage characteristics.10 cl, 4 dwg, 1 tbl

Pneumatic tyre // 2605808
FIELD: motor vehicle industry.SUBSTANCE: invention relates to automotive industry, in particular, to winter tire. Tread 2 of pneumatic tire is divided by central longitudinal grooves and shoulder longitudinal grooves onto central portion 6, outer middle portion 7A, inner middle portion 7B, outer shoulder portion 8A and inner shoulder land portion 8B. Outer shoulder portion 8A includes a number of external shoulder blocks 22 separated by outer shoulder longitudinal grooves 5A. Inner shoulder portion 8B includes inner shoulder longitudinal grooves 26 containing inner end 26i and outer end 26o within portion 8B, and inner shoulder auxiliary grooves 28 located between inner shoulder longitudinal grooves 26, 26, adjacent in longitudinal direction, and containing inner end 28i and outer end 28o within portion 8B. Inner mid portion 7B includes inner middle additional groove 18 extending continuously in longitudinal direction, and the inner middle connecting bars 21.EFFECT: improved drainage characteristics of tire, as well as running characteristics on snowy and icy road while maintaining stable steering on dry road surface.6 cl, 5 dwg, 1 tbl

Pneumatic tyre // 2602619
FIELD: transport.SUBSTANCE: invention relates to automotive industry. On tread surface there are narrow grooves with intervals in circumferential direction of a tire. Every narrow groove passes at an angle to the tire circumferential direction and has the width less than its depth. On one end section of the narrow groove there is an inlet part passing in the tire circumferential direction, wherein the inlet part is connected to the narrow groove by one end and is finished by the other end on the groove wall surface on the side of an end point of the circular, component of the first vector of the narrow groove walls surfaces, which are faced to each other in the tire circumferential direction, at that, the first vector passes from one end of the narrow groove to the other end of the narrow groove.EFFECT: technical result is improvement of heat dissipation without increasing the total volume of grooves.7 cl, 9 dwg, 1 tbl

High-capacity pneumatic tyre // 2601992
FIELD: motor vehicle industry.SUBSTANCE: present invention relates to automotive industry, in particular, to pneumatic tires. High-capacity pneumatic tire comprises tread, two circumferential grooves, plurality of transverse grooves and tread sett. Sett is equipped with two small grooves, having average depth less than circumferential grooves. Grooves average depth makes more than 20 % and less than 80 % of circumferential grooves depth. Two of small grooves extend into one of transverse grooves and circumferential grooves. One of other small grooves extend into each of two small grooves.EFFECT: achieving better removal of dirt around sett center.9 cl, 8 dwg

Tyre // 2601793
FIELD: machine building.SUBSTANCE: invention relates to tire, preventing overheating in motion. Tire comprises tread with groove passing in circumferential direction, plurality of ledges placed at groove bottom, each running from one side wall to opposite. On one of side walls a recess is made, guiding one-way air flow through grouser groove in circumferential direction. In tire surface projection recess is triangular and located opposite to grouser groove, including output into groove. Recess top is located in grouser groove extension direction and shifted from its center, positioned on such grouser groove central line, perpendicular to said grouser groove extension direction. At that, ledges are arranged in groove with preset intervals.EFFECT: achieved tread in motion overheating prevention.6 cl, 1 tbl, 20 dwg

Pneumatic tyre // 2599856
FIELD: equipment and accessories for vehicles.SUBSTANCE: invention relates to a pneumatic tyre with a tread pattern. Tread pattern comprises a set of main grooves, multiple grouser grooves containing multiple central and intermediate grouser grooves to form a plurality of central and intermediate blocks of the contact surface, respectively. Herewith each of two internal main lengthwise grooves comprises first and second walls of the groove facing the first wall of the groove. Each of two external main lengthwise grooves includes a pair of the first or the second walls of the groove facing each other.EFFECT: provided is balance between wear resistance on dry road surfaces and stable steering on wet road coat, as well as stable steering on snow.16 cl, 13 dwg, 2 tbl

Pneumatic tyre // 2599080
FIELD: machine building.SUBSTANCE: invention relates to automotive winter tires. Pneumatic tire includes tread provided with two main crown grooves extending in lengthwise direction arranged on both sides of tire equator; inclined transverse grooves, each of which passes axially with tire outer side of each main crown groove to each edge of thread in direction opposite to rotation, with provision of shoulder blocks between main crown grooves and edges of tread and lamellas. Said inclined crosswise grooves have inclination angle from 45 to 85° relative to tire lengthwise direction. Each shoulder block comprises rear edge and front edge comes in contact with road later than rear edge in preset direction of tire rotation. Said rear edge has curvature radius of 150-250 mm. All lamellae on shoulder blocks end without connection with rear edges.EFFECT: technical result is improved running characteristics of tire on snow-covered roads while maintaining stability of steering, drainage properties and running characteristics on icy roads.10 cl, 4 dwg, 1 tbl

Tyre for heavy load vehicle wheels // 2595728
FIELD: equipment and vehicle accessories.SUBSTANCE: tyre comprises tread (2) provided with blocks (201-204) formed between longitudinal (205-207) and transverse grooves. Between blocks particularly broad intersections (212) are formed, for example by staggering substantially transverse grooves of circumferential rows axially in side-by- side relationship, of blocks with rounded corners. Inside such broad intersections (212) a stocky-shaped protrusion (216) is arranged which has a lateral stiffness greater than lateral stiffness of surrounding blocks (201-204).EFFECT: better grip on asphalt roads, and off-road in terms of road grip, comfort and noise level.12 cl, 5 dwg

Tyre // 2593660
FIELD: machine building. SUBSTANCE: invention relates to tire. Tire comprises tread with groove, formed in circumferential direction of tire, plurality of ledges placed at groove bottom, each of which passes from one of side walls, forming groove to other side wall, located opposite. Projections are located in groove with preset intervals. At that, in projection on tire tread surface each protrusion is divided into several segments. EFFECT: efficient prevention of overheating of thread during vehicle motion. 8 cl, 1 tbl, 31 dwg

Pneumatic tyre // 2589192
FIELD: machine building.SUBSTANCE: invention relates to automotive industry and concerns an all-season tyre tread. Tyre comprises multiple main lengthwise grooves (21-23) extending in longitudinal direction of tyre, as well as multiple surfaces for contact with road surface (31-34), separated and formed by said main lengthwise grooves (21-23) in area of tread. Each of said surfaces for contact with road surface (31-34) has multiple recesses (312-342) respectively. At least 90 % of recesses (312) and (322) located in inner area are two-dimensional recesses and not less than 90 % of recesses (332) and (342) located in external area are three-dimensional recesses. Number N_in of lug grooves (311) in shoulder surface of contact with road surface (31) on side of inner area and number N_out of lug grooves (341) in shoulder surface of contact with road surface (34) on side of outer area relate so that N_in > N_out.EFFECT: technical result is improved stability on dry, and on snow-covered road surface.8 cl, 7 dwg

Pneumatic tyre // 2588626
FIELD: automotive industry.SUBSTANCE: invention relates to automotive industry. Contour shape of the tread is formed by a single arc under conditions in which the degree of flattening is more than 55 % and less than 70 % and the inner pressure amounts to 5 %. Tread includes main longitudinal grooves including the main shoulder longitudinal grooves, and shoulder lateral grooves located in the shoulder region of contact with the ground. Shoulder lateral grooves extend at an angle of α 80 to 90° from the axially outer edge of the tread having contact with the ground to the axially inside of the tire, and the axially inner ends located within the shoulder region of contact with the ground. Axial distance Ds between the axially inner end of the shoulder and the main circumferential groove is 3.5 to 5.5 mm, the shoulder lateral groove has a deepest portion where the groove depth is greatest, and the depth of the deepest part is 70 to 90 % of the depth shoulder circumferential main grooves.EFFECT: technical result - reduced wear in the shoulder region without deteriorating noise characteristics.7 cl, 8 dwg, 1 tbl

Tyre // 2584637
FIELD: motor industry.SUBSTANCE: invention relates to automotive industry. Tire (1) has multiple projections (500) at groove (50B2) bottom. Projections (500) pass from one sidewall (50B1) to other side wall (50B3), wherein side walls form groove. Projections (500) are located in groove with preset intervals. Lateral grooves (60) pass from side of tread (9) and have outputs (60a) into it. Air supply facilities (100R) supply air in lateral (60) grooves.EFFECT: reduced tire heating.6 cl, 20 dwg

Pneumatic tyre // 2578702
FIELD: motor industry.SUBSTANCE: invention relates to automotive industry and a tyre tread intended for snow, ice and wet roads. On surface of tyre tread there are blocks (18) located in central zone (22), tread having a width of X% (30≤X≤70) of width TW of tread contact zone with tyre equatorial line C as a center, formed elongated in tyre circumferential direction, so that ratio (S1/S2) of block sizes is not less than 1.5. At least one end of sipes (20), defined in longitudinal direction of sipes (20) made in blocks (18) is connected to longitudinal groove (14). Protrusion (30) and recess (32), which can contact interact with each other, are made on surfaces of walls of sipes, which face each other, forming sipes (20), in end in longitudinal direction of part of sipes (20), which is connected to longitudinal groove (14).EFFECT: technical result is improved characteristics of tyre adhesion with snow-covered, icy and wet road surfaces while maintaining stability on dry road surfaces.13 cl, 16 dwg, 4 tbl

Air tire // 2575532
FIELD: motor car construction.SUBSTANCE: tire (1 comprises the groove with multiple ledges (500) made at its bottom (50 B2). Ledges (500) extend from one groove sidewall (50B1) to opposite sidewall (50B3). Said ledges (500) are arranged in said groove at preset spacing P complying with the condition 0.75≤P≤10L, where L is the ledge length along central axis of the groove extending along the groove width centre. Distance (DL) in direction over the tread width from the end of the breaker shortest ply to the groove central line (WL) makes at least 200 mm.EFFECT: reduced tire overheating, hence longer life.9 cl, 21 dwg, 1 tbl

Pneumatic tire // 2575335
FIELD: motor car construction.SUBSTANCE: tread pattern comprises two first main lengthwise grooves, shoulder surfaces of contact with the road surface and shoulder grouser grooves, shoulder cutouts and narrow lengthwise grooves. Note here that said shoulder grouser grooves converge at the centre, in the area of the shoulder surface of contact with the road surface, without connection with the first main lengthwise grooves. Said grooves comprises the first and second areas located closer to the first main lengthwise grooves than the first areas and feature the depth smaller as compared with the first areas. Shoulder cutouts are coupled with the second areas to extend to the first main lengthwise grooves. The narrow lengthwise grooves extend in lengthwise direction of the tire and feature the width smaller than that of the shoulder grouser grooves. Said narrow lengthwise grooves intersect the second shoulder grouser grooves.EFFECT: perfected balance between wear resistance on dry road surface, stable steering on wet surface and stable steering on ice.12 cl, 10 dwg, 9 tbl

Air tire // 2573190
FIELD: motor car construction.SUBSTANCE: tire (1) has the groove on bottom (50B2) with multiple ledges (500) made thereat. Said ledges (500) extend from one sidewall (50B1) to the opposite sidewall (50B3) of the groove. Ledges (500) are located in the groove at preset intervals P complying with the condition 1.25≤P≤10L, L is the length of grooves (500) along the groove. Lateral grooves (60) made in the tread side strip extend from the groove to the tread side strip (9). Outlets (60a) are made in the tread side strip. Side grooves extend at the angle to direction twd over the tire (1) tread width on projection on the tire tread surface that makes 15-60 degrees.EFFECT: ruled out tire overheating.7 cl, 20 dwg, 1 tbl

Inflated tyre // 2564462
FIELD: motor vehicle industry.SUBSTANCE: tyre contains tread surface having circle groove going towards along the tyre circle, and multiple grooves in width direction, opened in the circle groove. The grooves in the width direction have the groove width exceeding width of the groove of the circle groove at least at the area opened in the circle groove, and grooves in direction of width go in the direction having inclination relatively to the direction along the tyre circle, where the cavity is made on the wall surface of the groove of the circle groove against the groove in the direction of width.EFFECT: reduced temperature of crown zone of the tyre tread.7 cl, 9 dwg

Pneumatic tyre // 2564064
FIELD: automotive industry.SUBSTANCE: pneumatic tire contains circumferential main and cross grooves and blocks. The blocks comprise a bent groove passing along a tire circumference, separating the block into two parts along the tire width, and arranged so that the directions of bend of bent grooves alternately change to opposite ones. In the first version blocks comprise the bent groove. In the second version the main grooves which pass along the tire circumference, one row which is the central contact section and two contact sections of the left and right arm zones. Cross grooves are inclined cross grooves which pass at the pre-set inclination angle with reference to the direction along the tire circumference. The central contact section is separated into a set of blocks due to crossing of the cross groove.EFFECT: improvement of operational characteristics for snow-covered and wet road movement.22 cl, 6 dwg

Inflated tyre // 2561661
FIELD: motor vehicle industry.SUBSTANCE: treat profile includes first grooves of grouser, that go from the appropriate ends on the external side in the transverse direction of tyre of the first inclined grooves in the first direction in the tyre longitudinal direction, and at angle in the direction of the external side in the tyre transverse direction up to edges of the area of engagement with the pavement, and have angle made with the tyre transverse direction, that is below the angle created with the tyre transverse direction by the first inclined grooves. The second inclined grooves pass from the appropriate ends on the external side in the tyre transverse direction of the first inclined grooves in the first direction in the tyre longitudinal direction, and at angle in the direction of the internal side in the tyre transverse direction. The third inclined grooves pass from the appropriate intermediate points on the first grooves of the grouser in the first direction in the tyre longitudinal direction, and at angle to in the direction of the external side in the tyre transverse direction, and have angle made with the tyre transverse direction exceeding the angle made with the tyre transverse direction by the first grooves of the grouser. Each third inclined groove closes not reaching the other first groove of the grouse, located adjacent with the first groove of the grouser in the first direction.EFFECT: improved operation parameters of the tyre on ice, snow and wet pavement.18 cl, 6 dwg, 3 tbl

Tyre // 2561656
FIELD: motor vehicle industry.SUBSTANCE: tyre has section of the tread for contact with the road surface. In the tread there is section of the side groove in the direction crossing with the circumferential direction of the tyre, and contact section divided by the section of the side groove. The contact section includes: surface of contact with soil to contact with the road surface; side surface made in the direction of the tread width on the external side of the contact section; the side groove surface creating the groove wall of the side groove section, made in the circumferential direction of the tyre at one end of the contact section; and narrowing surface that crosses the surface of contact with soil, side surface and the side groove surface at corner section, formed by the surface of contact with soil, side surface and side groove surface.EFFECT: increased efficiency of heat radiation without losses of the treat strength and its wear resistance.6 cl, 14 dwg, 1 tbl

Pneumatic tire // 2557126
FIELD: transport.SUBSTANCE: tire with preset sense of rotation comprises treads. Parts of said treads are composed by multiple inclined grooves extending from both edges of the tread to its equatorial line and inclined to direction of rotation relative to tread width direction. Tread branched grooves, each extending from the part of inclined groove located some 1/4 of tread width from tread edge and directed inward over tread width. It is directed to tire equatorial line in tire circumference opposite the direction if tire circumference whereat inclined grooves are located relative to tread width to terminate in tread block.EFFECT: higher resistance to abrasive wear.4 cl, 2 dwg, 1 tbl

High-capacity tire // 2550631
FIELD: transport.SUBSTANCE: invention relates to automotive industry. High-capacity tire includes tread provided with central longitudinal groove, crown longitudinal grooves at each side of this groove and crown lateral grooves passing between them thus crating blocks of crown. Crown block is additionally divided in longitudinal direction into two parts of the block by narrow groove of crown. Lateral groove of crown is provided at its bottom with web extending from bottom and connecting two crown blocks being adjacent in longitudinal direction. Lateral grooves of crown are inclined at an angle α of 10 to 30 degrees relative to axial direction of tire. The central longitudinal groove and axially-inner part of lateral crown groove which is located at axially inner side of web are of least depth than longitudinal groove of crown.EFFECT: better tread self-cleaning of stones without creation of cracks at the bottom of groove and without performance degradation on wet road surface.8 cl, 4 dwg, 1 tbl

Pneumatic tire // 2550237
FIELD: transport.SUBSTANCE: invention relates to automotive winter tire tread design. In the tread part, multiple longitudinal and lateral grooves are made. They determine boundaries of multiple rows of blocks. Each of the blocks includes sipes. Length of each of the blocks included into the first row of blocks and the second row of blocks is at least 1.5 times and not more than 2.5 times greater than length of each of the blocks included into the third row of blocks. Width of each of the blocks included into the second row of blocks is greater than width of each of the blocks included into the first row of blocks. Lateral grooves determining boarders of blocks in the first row of blocks and lateral grooves determining boarders of blocks in the second row of blocks are located with shift relative to each other in direction along tire circumference for a distance of at least 0.2 and at most 0.8 of the length of each of the blocks in the first row of blocks. Lateral grooves determining boarders of blocks in the second row of blocks and lateral grooves determining boarders of blocks in the third row of blocks are located so that they communicate with each other being inclined in the same direction relative to tire width direction.EFFECT: improved operational performance during movement over ice and snow with good balance.11 cl, 8 dwg, 1 tbl

Air tire with radial cord // 2550059
FIELD: transport.SUBSTANCE: proposed tire comprises directed patter defining the direction of tire rotation and at least one crosswise groove on tread surface extending from tread edge and inward in direction over tread width beyond central point P of tread width half. Here this tread edge is located whereat groove wall of expulsion side has of at least one crosswise groove has the ledge. The latter extends towards inlet side groove wall relative to point Q. The latter represents the mid distance, over tread width, from tread edge to point P of tread width half. Note here that said ledge extends from position between points P and Q and inward beyond point Q in direction over the tread width.EFFECT: higher resistance to abrasive wear.4 cl, 6 dwg, 1 tbl

Vulcanised tread and tyre // 2539441
FIELD: transport.SUBSTANCE: invention relates to the automotive industry. A tyre frame being a tyre base, and a vulcanised tread which is glued to the tyre frame, are formed separately and connected to each other, forming the tyre. The tread, in its cross (axial) direction, has a set of grooves passing in its longitudinal (circumferential) direction. The tread thickness in the cross section gradually decreases from the equator to the edge from the side of the equator of the extreme external groove located in axial and extreme external area and is gradually increased from the external edge of the extreme external groove outside in the axial direction.EFFECT: possibility of the regulation of uneven wear of the tread.6 cl, 7 dwg

Pneumatic tire // 2537987
FIELD: transport.SUBSTANCE: invention relates to motor tire tread pattern. Tire tread is provided with blocks each one of which has surface of block wall facing transversal groove tilted at an angle (Θ) of 5 to 40 degrees relative to axial tire direction and thus forming acute-angled edge and obtuse-angled edge of block. Block wall surface between acute-angled edge and obtuse-angled edge is provided with at least two slots of 0.3 to 2.0 mm in width. Distance P2 measured from acute-angled edge to one of at least two mentioned slots the nearest to acute-angled edge is greater than distance P1 measured from mentioned obtuse-angled edge to one of at least two mentioned slots the nearest to obtuse-angled edge. Each distance is measured along radially outer edge of block wall surface to slot centre across width.EFFECT: tire noise reduction.10 cl, 5 dwg, 1 tbl

Auto tire // 2531534
FIELD: transport.SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Tire 1 comprises: circular groove 12 made in crown zone, tread runner 22 divided by said groove 12 and crosswise grooves made at tread runner. Crosswise grooves comprises first crosswise groove 32 dividing the tread runner into several blocks and second crosswise groove 51 dividing the block 42 separated by first crosswise groove into block first and second parts 61, 62. Circular groove part depth in contact with second block is smaller than that of circular groove in contact with first block.EFFECT: higher stiffness, better tread drainage.5 cl, 5 dwg, 1 tbl

Winter tire with higher grip at snow-clad surfaces // 2529569
FIELD: transport.SUBSTANCE: invention relates to tread of tires to be used in winter. Winter tire (1) has tread (2) with relied patter composed of multiple lengthwise grooves (4) and crosswise grooves (5) isolating the blocks (6) extending radially from base surface (3) of tread (2) to make at least one lengthwise row. Every block (6) has two lengthwise lateral surfaces (7) that make the boundaries of two appropriate lengthwise grooves (4) and two crosswise side surfaces (8) that make the boundaries of two appropriate crosswise grooves (5). At least one of units (6) has lateral channels (9) each being formed at side surface (7, 8) of appropriate block (6) to extend from base surface (3) of tread (2) to top surface (10) of block (6) to prevent radial extension of trapped snow from inner section of lateral channel (9).EFFECT: perfected grip and snow-clad roads.19 cl, 16 dwg

Pneumatic tire for vehicles // 2526713
FIELD: transport.SUBSTANCE: invention relates to pneumatic tire for vehicles, in particular to be used in winter conditions of driving. Tread is provided with multiple narrow sipes (4) which pass in transversal direction of tread in parallel to each other. Mutually opposite walls (5) of sipes contain mutually matching projections (6, 7) and recesses (16, 17). The projections (6, 7) are rounded raised areas. The projections (6) are located in separate areas in radially outer region of one sipe wall (5). In this structure, each of mentioned projections (6) has one flat side forming supporting surface (6a) oriented in radial direction and essentially perpendicular to sipe wall (5). The projections (7) are located in separate areas in radially inner region of one sipe wall (5). In this structure, each of mentioned projections (7) has one flat side forming supporting surface (7a) passing essentially in parallel to upper surface of positive profile.EFFECT: better tire adhesion to ice-covered road surface while providing uniform wear of tire tread.10 cl, 3 dwg

Pneumatic tire // 2525187
FIELD: transport.SUBSTANCE: invention relates to automotive industry, namely, to studless tire tread pattern. Tire (1) tread (2) has several (5R) crown blocks (5b) separated by crosswise crown grooves (8), two rows (6R) of mid blocks (6b) separated by mid crosswise grooves (9) and two rows (7R) of shoulder blocks (7b) separated by shoulder crosswise groves (10). Every crown crosswise groove (8) is level in lengthwise direction with one crosswise crown mid groove (9) so that crosswise groove (8) is located in area (Mc) of the mid crosswise groove confined by 1st and 2nd crosswise straight lines (Za and Zb). The latter extend through 1st and 2nd extreme ends (9a, 9b) of the mid crosswise groove (9), respectively. Longitudinal length of crosswise mid groove are (Mc) makes at least 25% but not over 50% of pitch length (P) confined by 1st extreme ends (9a, 9b). Are (Mc) of mid crosswise groove does not overlap anyone shoulder crosswise groove (10).EFFECT: better bite.8 cl, 7 dwg, 1 tbl

Pneumatic tire // 2524522
FIELD: transport.SUBSTANCE: invention relates to vehicle tread pattern. Pneumatic tire (1) contains tread (2) which includes projections (23) formed by longitudinal grooves made in longitudinal direction of tire and by transversal grooves (24) crossing longitudinal grooves. The transversal grooves (24) in longitudinal direction of tire form multiple pitches (P1, P2 and P3) of tread pattern. In this structure, in the tread (2) shoulder, as tread pattern pitch decreases the volume ratio of transversal grooves (24) in the volume of portion corresponding to tread pattern pitch increases, and in the central zone of tread (2), as tread pattern pitch decreases the volume ratio of transversal grooves in the volume of portion corresponding to tread pattern pitch decreases.EFFECT: higher stability of vehicle driving while keeping tread uniformity.4 cl, 5 dwg

Tire tread with several wearing plies // 2521899
FIELD: transport.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

Pneumatic tire // 2521052
FIELD: transport.SUBSTANCE: invention relates to tread pattern of automobile non-spiked tire with improved noise characteristics. Pneumatic tire includes axially-internal lengthwise rows of crown blocks which rows are located at each side of tire equator, and axially-external lengthwise rows of shoulder blocks which rows are located axially to the outside of axially-internal lengthwise rows. Crown blocks are longitudinally separated by the first and the second interleaving transverse grooves of the crown. Shoulder blocks are longitudinally separated by the first and the second interleaving transverse shoulder grooves. The first transverse shoulder grooves have width of not less than 3.5 mm. The first transverse crown grooves have width of not less than 2.0 mm. The second transverse shoulder grooves include axially-internal slit-shaped portion with width of 0.5 to 2.0 mm and axially-external main portion at least 3.5 mm wide. The second transverse crown grooves include axially-internal slit-shaped portion with width of 0.5 to 2.0 mm and axially-external main portion at least 2.0 mm wide.EFFECT: better tire noise characteristics without impairment of running characteristics over snow-covered road surface.9 cl, 5 dwg, 1 tbl

Pneumatic tire // 2520265
FIELD: machine building.SUBSTANCE: proposed tire comprises tread zone (A) located from vehicle inner side and tread zone (B) located on vehicle outer side. There are multiple slot-like drain grooves (32A, 32B) extending over tire width and formed in every block (31A, 31B). The number of blocks (31A) in said zone (A) is larger than that of blocks (31B) in said zone (B). Note here that slot-like drain grooves (32B) in blocks (31B) of zone (B) are configured to extend linearly along their depth. Note here that slot-like drain grooves (32A) in blocks (31A) of zone (A) are configured to extend in wavy manner along their depth.EFFECT: better road grip on dry road and snow.7 cl, 4 dwg
 
2551003.
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