Automotive tire, tire tread and lamellas

FIELD: transport.

SUBSTANCE: invention relates to design of slits in tire tread pattern. Treat layer has treat patter forming annular grooves and crosswise grooves while tread blocks 22 with slits are formed. At least some of said slits 27 in lengthwise direction feature wavy configuration. This allows making at least two main surfaces (272A, 272B) in said slit 27 arranged in line and shifted one relative to the other through preset distance C. Transition zone 272C is located between said main surfaces. Adjacent main surface 272A, 272B incorporated locking elements 28 made up of ledge 281 in one of walls of slit 27 and shaped to truncated cone while opposite wall 271 of said slit has recesses 282 of the same shape. Ledge 281 and recess 282 conjugate when walls 281 of aforesaid slit get pressed together. Invention covers appropriate tire tread and to means used in production of the tire.

EFFECT: improved grip.

9 cl, 11 dwg

 

The technical field

The invention relates to a tire of the vehicle, the tread layer which provides rolling contact with the surface of the earth, formed a tread pattern, forming a ring and transverse grooves so that between them was shaped tread blocks with narrow slits.

The invention relates also to the tread of the tires of the vehicle. The track according to the invention contains a sacrificial layer, which provides rolling contact with the ground surface and in which is formed a tread pattern, forming a ring and transverse grooves so that between them was shaped tread blocks with narrow slits.

In addition, the invention relates to modular plate, which is used in the manufacture of tires of a vehicle, characterized in claim 1 of the formula, and whereby in the tread block is formed a slit-like slot.

More specifically, the invention relates to a tire of the vehicle, the tread layer which provides rolling contact with the surface of the earth and provided with a tread pattern, forming an annular and transverse grooves to remove water from the zone of contact of the tyre with the ground surface. In addition, a protective layer made of slats, SFOR the new through the slit-like slits in the tread blocks, located between the grooves, and intended to improve the adhesion between the surface of the earth and the bus. The invention relates also to appropriate the tread, which can be run on the lid of the tire, and tool for manufacturing the tire of the vehicle or of this treadmill.

The level of technology

Bus vehicle contains sacrificial layer, the purpose of which is to implement, in rolling contact with the surface of the earth, in particular with the road. Sacrificial layer provided with a tread pattern according to which he by diverging grooves is divided into blocks (i.e. sacrificial layer contains blocks and grooves). The grooves are designed to divert water that may be on the surface of the earth, and the purpose of abstraction is the provision of such a good and tight contact between the outer surface of the sacrificial layer and expensive (more precisely, between the tread block and expensive)as possible. Tire types, such as winter tyres, the tread blocks through the slit of the slit is divided into slats that are adjacent to each other and provide improved adhesion between tyre and road. The present invention relates particularly to a tire of this type, which are equipped with blades, SFOR the new through the slit of the slit.

A positive feature of the slit-like slots and slats formed with their use, is that they reduce the contact between the tread layer and ground surfaces with a low coefficient of friction, such as snow and ice. As a result, in slippery conditions is increased friction without slippage occurring between the surface and the block of the tread, and also increases the hysteresis friction of the outer layer of the tread, i.e. the so-called rubber surface. On the ice due to frictional heat at the sliding tires usually produces a thin film of water between the tyre and the surface of the earth, which also must be reduced by removing water through narrow slots in order to further improve the contact and friction between the block of the tread and ice.

The lack of laminirovaniya and slit-like slots is a reduced stability of the tread block on surfaces with a high coefficient of friction, such as dry or wet asphalt. Moreover, in such conditions deteriorate performance tires, namely the properties that are associated with braking, acceleration and maneuvering. As an example of a situation in which there is reason to believe that the tire will lose its stability, it is possible to mention a significant bending of the tread block when turning, when the block is placed is seeking "under the bus". Usually such situation is unpleasant for the driver and suggested to him that the vehicle starts to slide. In this description, the terms "surface with a low coefficient of friction and the earth's surface with a high coefficient of friction" is used to describe the frictional properties, manifested between the outer surface of the protective layer of the tire of the vehicle and the ground surface. The ground surfaces with a low coefficient of friction include, for example, surfaces covered with ice and snow. An example of a surface with a high coefficient of friction is dry or wet asphalt.

In the prior art, among other publications known patent document US 3608602, which describes formed in the slot protector shaped element with an axisymmetric configuration, and patent document EP 1533141 B1, offering a polygonal element, formed in a slit-like notches to enhance grip.

Disclosure of inventions

The problem to which the present invention is directed, is to improve properties of a vehicle tyre having a tread block of slats and narrow slits, and the tread block with increasing stability, however, should remain "soft" in relation to the surface with a low coefficient of friction.

The dal is, the problem solved by the invention is the formation of a tire of a vehicle, possessing these properties, so economical a manner as possible to the cost of manufacturing tyres of the highest class were extremely low.

In this description, the term "groove" refers to elongate open space formed in the protector. The difference grooves from narrow slits is that the former does not assume mutual contact of the opposite side walls in a situation associated with managing, for example, during changes of speed or direction. Accordingly, the term "narrow slit" refers to a formed in the tread element, the opposite side walls of which in such a situation, for example during a change of speed or direction, designed for mutual contact. Accordingly, the term "tread pattern" refers to the drawings sacrificial layer, and the geometry of such a picture form the grooves formed between the tread blocks and, optionally, a slit-like slots. In this description, the term "annular groove" refers to a groove, flowing generally in the direction of rolling of the tyre, i.e. in the plane perpendicular to the axis of rotation. An annular groove, which is often referred to as t is the circular train, uses one of the embodiments of the invention. Through two circular grooves in the tread layer can be formed annular rib. However, in the context of the invention, the term "annular groove" may include grooves, flowing generally in the direction of rolling tires and form a closed zig-zag pattern (closed in the sense that when a complete cycle of rotation of the tire about its axis of rotation trajectory of the groove is returned to the starting point). In this description, the terms "transverse flute" and "diagonal groove" refers to the grooves, passing, respectively, in the transverse direction of the tire (i.e. at an angle α≤45° relative to the axial direction of the tire) and at an angle α≤45° relative to the transverse direction of the tire (i.e. its axial direction). Often the bus contains grooves with different diameters, and in this description the largest of them can be called "main drainage grooves". Similar terminology relating to areas used for narrow slots and other items of this kind. In this description, the term "direction in depth" refers to a direction oriented from the outer surface of the sacrificial layer radially toward the axis of rotation of the tire.

The tire of the vehicle according to the invention is characterized by the fact that at least some of slit-like slots in their longitudinal direction is made with a wavy configuration. As a result, the slits are formed at least two major surfaces sequentially and mutually offset one relative to another, and between these surfaces is a transition zone. In this case, the adjacent major surface provided with locking elements, and one of the walls of the slot, these elements formed a protrusion in the axisymmetric form of a truncated cone. Since the other wall of the slot is made with a recess of the same shape, the protrusion and the notch mate, when the walls of the slot in the operating conditions are pressed to each other.

Treadmill tread according to the invention is characterized by the fact that at least some of slit-like slots in their longitudinal direction is made with a wavy configuration. As a result, the slits are formed at least two major surfaces sequentially and mutually offset one relative to another, and between these surfaces is a transition zone. In this case, the adjacent major surface provided with locking elements, and one of the walls of the slot, these elements formed a protrusion in the axisymmetric form of a truncated cone. Since the other wall of the slot is made with a recess of the same shape, the protrusion and the notch mate, when Tenchi slot operating conditions are pressed to each other.

Lamella plate used in the manufacture of tires of a vehicle according to the invention, in turn, characterized by the fact that in its longitudinal direction, it is made with a wavy configuration. As a result, the plate is formed of at least two major surfaces sequentially and mutually offset one relative to the other, and between them there is a transition zone. Adjacent the main surface provided with locking elements forming one of the walls of the slot blocking protrusion in the axisymmetric form of a truncated cone. As in the other wall of the slot is formed in the recess of the same shape, the protrusion and the notch mate, when the walls of the slot in the operating conditions are pressed to each other.

The use of the invention allows to improve the conventional emalirovannoy design by increasing the stability of the tread block without attenuating the desired softness and elasticity. This result is achieved in this way: by closing emalirovannoi system in the direction of depth on the principle of fixation (blocking mutual offset) in accordance with the form through the use of recesses having a configuration in axisymmetric form of a truncated cone, and a wavy configuration of the slit slits passing in the ass is enom direction. A blocking element in the form of a truncated cone provides a circuit and also in the longitudinal direction of the slit of the slit. If the friction between the tread and the ground surface is small, the soft contact between them can be maintained, allowing the slats to move to a predetermined threshold value. If you exceed this threshold, the slats are closed in the manner described on the principle of fixing match in form, and in part by grooves in the axisymmetric form of a truncated cone and return projections, and partly due to the undulating configuration of the transverse slit of the slit. As a result, the surfaces with a low coefficient of friction of the tread block behaves like a "soft" laminirovannyy tread block, known from the prior art. When the friction on the surface of the earth increases, and the forces acting on the tread block, increase its stability increases, i.e. the unit due to its ability to closure becomes more rigid, and the behavior of the tires on the surface with a high coefficient of friction improves. Mentioned threshold value is determined in part by the parameters of the material, and partly by the slit width of the slits, i.e. practically thickness used lamella plates. When moving vehicles are the forces acting on the tire, leading to the warp tread block, consequently slit the slit is closed. When wall slip relative to each other, due to the shape of a truncated cone begins a counter-move, once the offset exceeds the length defined by the thickness of the lamella plates.

In the course of experiments it was shown that the blocking element in the form of a truncated cone is acceptable technical solution, and in particular in the case where it is formed into a slit-like slots, wavy curved according to the invention. Configuration in the form of a truncated cone optimally resists possible transverse deformation of the slot. Often this slot is executed in the tire in the lateral direction, and in this embodiment it is particularly tends to deform when braking or accelerating. Similarly, the configuration in the form of a truncated cone manifests itself also in the longitudinal direction of the slit-like notches, and in particular in the case when the direction of the effort, causing deformation, such that the circuit is achieved by a wavy configuration of the slot tends to split.

According to a variant embodiment of the invention the locking elements are located on the adjacent main surfaces and are oriented in mutually opposite directions is, i.e. based on the data surfaces oriented from the Central surface of the slit-like notches. This ensures maximum geometric trailing effect in the direction of the slot, when the distance from an imaginary Central surface is so large as possible. In certain dynamic situations tread block tends to deform, causing mutual slippage of the walls of the slit-like openings in its longitudinal direction, and such execution of these elements are particularly opposed longitudinal deformation of the slot.

Brief description of drawings

Hereinafter the invention will be described in more detail with reference to the accompanying drawings, of which

figure 1 illustrates a General view of a vehicle tyre,

figure 2 shows a fragment of the tire of figure 1,

figure 3 illustrates the surface figure of a vehicle tyre,

figure 4 shows the plot of figure 3,

figa, 5B and 5C on the views from different directions illustrate the lamella plate according to the invention,

figa and 6B illustrate the tread block in different operating conditions,

7 and 8 illustrate the lamella plates according to other variants of their implementation.

The implementation of the invention

Figure 1 shows a tire 1 t is bound means, containing sacrificial layer 2, designed for contact with the ground surface while rolling. The layer 2 has a tread pattern 20, which forms an annular groove 25 and the transverse grooves 26 located so that between them was shaped tread blocks 22. The blocks 22 are made narrow slits 27, at least some of which are made with a wavy configuration in their longitudinal direction.

In figure 2, the area enclosed by figure 1, the dashed lines represented in an enlarged scale. For clarity, one narrow slot 27 is shown so that its shape was obvious from the drawing. The slot 27 in its longitudinal direction is made with a wavy configuration, resulting in such a slot formed in at least two major surfaces A and B located sequentially and spatially separated from each other (in this case in the circumferential direction) of the transition area S. While the adjacent main surface A and B provided with locking elements 28, and one of the walls 271 slots these elements are formed in the form of a protrusion 281 in the axisymmetric form of a truncated cone. As another wall 271 of the slot is made with a recess 282 of the same shape, the protrusion 281 and the recess 282 mate, when the wall 271 in operating conditions are pressed to each other.

As shown in figure 2, the blocking elements 28 are adjacent the main flat surfaces A and B and oriented in mutually opposite directions, i.e. based on the data surfaces oriented from the Central surface 272D narrow slot 27 (see figv). According to another variant of implementation (not shown) on the main flat surfaces A and B formed recess 28 located near the Central plane of the slot 27.

3 shows the embodiment of figure 20 the tire tread of the vehicle. Shows the annular groove 25 and the transverse grooves 26 located on the drawing respectively vertically and horizontally. Between them shaped tread blocks 22, provided with a slit-like slots 27.

Figure 4 embodiment of the tire according to figure 3 presents so that you can see the blocking elements 28. The tire of the vehicle under this option contains the sacrificial layer 2, providing rolling contact with the surface of the earth. Layer 2 has a tread pattern 20, which forms an annular groove 25 and the transverse grooves 26 located so that between them was shaped tread blocks 22 with narrow slits 27. At least some of slit-like slots in their longitudinal direction issue is lnany with wavy configuration. In this slots 27 are formed at least two major surfaces A, B located sequentially and mutually offset one relative to another by a given distance C. Between these surfaces is a transition zone S. In this case, the adjacent major surface A, V provided with locking elements 28, with one wall 271 of the slot 27 data elements generated in the form of a protrusion 281 in the axisymmetric form of a truncated cone. As another wall 271 of the slot is made with a recess 282 of the same shape, the protrusion 281 and the recess 282 mate, when the walls of the slot in the operating conditions are pressed to each other. In the embodiment represented in figure 4, the tire is designed for installation on the vehicle so that the diagram right edge turned out to be outer, i.e. corresponded to the outer edge of the vehicle. Then when turning the vehicle maximum efforts will be made to the tread blocks 22 that are located from the outer edge of the tire (i.e. in this case to the right). According to the invention for these blocks, on the side of the outer edge, implemented the desired properties associated with the management, namely sufficient softness at low lateral loads. However, with increasing efforts shifted to the E. between the blades is blocked or tends to decrease, as you begin to operate the blocking elements 28, thereby limiting the displacement between the slats. In the embodiment represented in figure 4, the elements 28 are located in the three most extreme alignments (zones), restricted annular groove 25, however, this option is by no means the only possible. On the contrary, you can place these elements according to many different schemes, for example in one, the last row, in two, three or four rows and in each row, and only in the inner (Central) range or a few Central rows, etc.

On figa, 5B and 5C presents lamella plate 270 according to a variant embodiment of the invention, which is used as a tool in the manufacture of tires according to the invention, intended for the vehicle. As part of the mold having a real volume, the plate 270 creates in the tire blank space in the form of narrow slits 27 that corresponds to the shape of plate. The plate 270 can be performed, for example, of a steel sheet, cutting it according to the configuration shown in figa, 5B and 5C.

On figa lamella plate 270 is presented on the front view. If the narrow slot 27, is made through the lamella plates 270 are oriented transversely of the tire, the direction of the "front view" has the same meaning as the direction along the axis of the tire. The height h of the plate 270 specifies the depth of the corresponding slit-like slits in the tread. As can be seen from the drawings, it is not necessary that lamella plate had the whole length of the same height h, and even desirable, to reduce it from end sections. In this embodiment, width of the tread block and respectively along the length of the slit-like notches, the depth of the slot is changed, so that, by the construction of this type, the ends can be performed, for example, more durable, less resilient or more wear resistant. According to a preferred variant implementation of the depth h of the slot 27, is made through a lamella plate 270, the maximum of the main planes A, B. On figa upper edge of the plate corresponds to the outer surface of the tire.

On FIGU lamella plate shown in the top view, i.e. in the radial direction, if you look, for example, at a right angle to the tread of the tire. As shown in this drawing, the plate 270 has a thickness s, which corresponds to the width of the slit-like notches 27. Plate 270 in its longitudinal direction is made with a wavy configuration. As a result it is formed of at least two major surfaces A, B, consistently placed and displaced one relative to another by a given distance, and is between these surfaces is a transition zone S. In this case, the main surface A, V provided with a protrusion 281 in the axisymmetric form of a truncated cone, and on the other side of the plate correspondingly formed recesses 282. As part of the mold having a real volume, the plate 270 creates in the tire corresponding to empty space, i.e. a slit-like slot 27. The protrusion 281 and the recess 282 of the plate 270 is formed in the wall of the slit-like notches, respectively, the recess 282 and the protrusion 281. According to this variant of implementation, the distance between the main surfaces A, B is 1-5 mm Further, according to a preferred variant implementation of the diameter D of the base of a truncated cone, which forms the recess 282 and the diameter d of the upper tip of this cone is chosen at intervals of 3-7 mm, respectively, and 1-7 mm, it is desirable that the value of d was at least 10% less than the value D. the Width L lamella plate measured perpendicular to the length characterizing the distance C.

For clarity, lamella plate 270 on figa and 5B are also in pigs, but the view from the other direction, to more clearly illustrate its three-dimensional structure.

On figa and 6B shows how deformed unit 22 of the tread with increasing efforts F shear acting between the tire 1 and the surface R of the earth. This variant efforts F shift can the t to occur, for example, during acceleration or deceleration of the vehicle, and due to centrifugal force during rotation. For clarity, figa and 6B presents only one block 22 of the protective layer 2 containing four narrow slots 27 between which is formed of slats 221. In these drawings, the slit-like slot shown in the cross-section plane, which enters the blocking element 28. Figa illustrates a situation in which the tread block 22 is not exposed to the efforts of the F shift or exposed to relatively weak efforts directed across the slot 27. The width s of the slit 27 remains unchanged or almost unchanged. The depth of the tread block 22 is set by the depth H of the grooves 25, 26. In turn, the depth h of the grooves 27 sets the height of the slats 221 formed between them.

On FIGU shown as deformed tread block 22 to figa, when the force F shift occurs between the surface R of the earth and the bus 1, is increased, for example, to a predetermined threshold value. In this situation, a slit-like notches 27 are closed due to deformation of the block 22, i.e. the slit width becomes approximately equal to zero, especially in the contact area of the tread block 22 and the surface R of the earth. Due to the deformation of the wall 271 slit-like notches 27 slip relative to each other in direction is toward deepening into the slot until until the protrusion 281 of the locking element 28 and the recess 282 is in contact and will not start to prevent deformation or even block it. Mentioned threshold value at which the contact protrusion 281 and the notches 282, can be output to the desired level by adjusting the various influencing parameters, including the characteristics of the material of the tire, the depth h and the width s of the slot 27, the distance between the slits and other factors. Changing the width s of the slot, i.e. the thickness of the lamella plates used in the manufacture of tires, in particular, to set the desired "soft", i.e. the permissible degree of deformation occurring before the initial block deformation of the blocking element 28. In the course of experiments it was shown that the blocking element 28 in the form of a truncated cone is acceptable technical solution, and in particular in the case where it is formed in a wavy slit slits according to the present invention. Configuration in the form of a truncated cone optimally resists possible transverse deformation of the slot and is equally functional in different traffic situations directly related, for example, braking or acceleration, as well as when performing these actions while off course, Often this slot is executed in the tire in the lateral direction. In this embodiment, it is easily deformed, especially when braking or accelerating.

7 illustrates, in side and top views, lamella plate 270 according to the preferred options for implementation. These options are illustrated possible configuration form lamella plates are used, for example, for the boundary areas of a vehicle tyre, as it has already been described above in connection with figure 3 and 4. In versions 7 also provides for a transition zone S, and its length (shown bidirectional arrow in the left part 7) in the longitudinal direction of the plate 270 is increased, i.e. the extension of this zone in the bus runs parallel to the longitudinal direction of the slit-like notches 27. In this case, the transition zone C there is an intermediate area E that does not contain a trailing element. Provided an opportunity to give the area IS the same shape as that of the main surfaces, or to perform it, for example, in the form of straight, slightly curved or almost flat element, and other variants are possible. Due to the presence of such a zone blocking elements 28 are spaced apart from each other farther than in the variant illustrated in figa-5C. You can change the properties of this lamella plate providing a closure, and, therefore, also relevant pnev eticheskie properties of the tread block. In addition, figure 7 shows how you can make a lamella plate, for example, different, one from the other forms of its end zones corresponding boundary zones of the tread block.

Pig the same way on the side and top views, illustrates some embodiments of lamella plates with other different one from the other forms responsible, for example, the boundary zones of the tread blocks. These options show how lamella plate regularly extended areas, equipped with locking elements. On Fig these elements such blocking elements described above in connection with figure 3 and 4, as well as with figa-5S.

Towards 7 and 8 it should be clear that the lamella plates, illustrated in these drawings, create in the tire of the vehicle (the tread) geometric structure, i.e. a slit-like cut with the appropriate volume. In this case omitted discussion of these plates, already discussed with reference to figa, 5B and 5C.

The specialist in this area should be clear that the invention and variations in its implementation is not limited to the given examples. Expressions included in the formula of the invention and describing the essential features (for example, the expression "the tire includes a tread layer"), have discovered the character in the sense they do not exclude the presence of other significant symptoms not included in the independent and dependent claims.

Designations used on the drawings:

1 - bus vehicles

2 - protecting layer

20 - tread pattern

22 - tread block

221 - lamella

25 annular groove

26 is transverse groove

H - the depth of the groove/the height of the tread block

27 - slit-like slot

270 - lamellar plate

L is the length of the slit slits/the width of the lamella plates

h - the depth of the slit-like notches/height lamella

s is the slit width of the slits/the thickness of the lamella plates

271 - wall slit slits

A main surface

W main surface

S - transition zone

With the distance between the main surfaces

272D - Central surface

E intermediate section

28 - blocking

281 - ledge

282 - notch

d is the diameter of the upper end of the cone

D is the base diameter of the cone

F - shear

P - surface of the earth

1. Bus (1) a vehicle having a sacrificial layer (2), which is intended to provide rolling contact with the surface of the earth, while the sacrificial layer (2) is provided with a tread pattern (20)containing an annular groove (25) and transverse grooves (26)and between Cana is kami (25) formed tread blocks (22), equipped with a slit-like slots (27), characterized in that at least some of slit-like holes (27) in its longitudinal direction is made with a wave-like configuration capable of forming a slit in the slot (27) of at least two major surfaces (A, B)arranged in series and are mutually offset one relative to another by a given distance (C), and between these surfaces is a transition zone (S), and the adjacent major surface (A, V is provided with locking elements (28), which in one of the walls (271) slit-like notches (27) formed in the lip (281) in the axisymmetric form of a truncated cone, and the other wall (271) slit-like slots in the form of recesses (282) in the axisymmetric form of a truncated cone, the said ledge (281) and a recess (282) mate, when wall (271) slit-like openings in the operating conditions are pressed to each other.

2. The tire according to claim 1, characterized in that the blocking element (28) is performed on the adjacent main flat surfaces (A, B) oriented in mutually opposite directions and directed from the Central surface (272D) slit-like notches (27).

3. The tire according to claim 1, characterized in that the depth (h) slit-like notches (27) the maximum in the area of the main surfaces (A, V).

4. The tire according to claim 1, the tives such as those that the distance between the main surfaces (A, V) is 1-5 mm

5. The tire according to claim 1, characterized in that the transition zone (S) is made elongated in the longitudinal direction with the formation of the intermediate segment (A) without blocking elements.

6. The tire according to claim 1, characterized in that the blocking element (28) is placed in the exterior in the direction of the width of the bus lines, shaped tread blocks (22), given the annular grooves (25).

7. The tire according to claim 1, characterized in that the truncated cone forming the recess (281), diameter (D) of the Foundation is 3-7 mm, and the diameter (d) of the upper extremity is 1-7 mm, the diameter (d) of the upper extremity at least 10% smaller than the diameter (D) of the Foundation.

8. Treadmill (10) tread (1) a vehicle containing sacrificial layer (2), which is intended to provide rolling contact with the ground surface and provided with a tread pattern (20)containing a ring (25) and transverse (26) of the groove and between the grooves (25) formed tread blocks (22), provided with narrow slits (27), characterized in that at least some of slit-like holes (27) in its longitudinal direction is made with a wave-like configuration capable of forming a slit in the slot (27 at least two major surfaces(A, V)arranged in series and are mutually offset one relative to another by a given distance (C), and between these surfaces is a transition zone (S), and the adjacent major surface (A, V is provided with locking elements (28), which in one of the walls (271) slit-like notches (27) formed in the lip (281) in the axisymmetric form of a truncated cone, and the other wall (271) slit-like slots in the form of recesses (282) in the axisymmetric form of a truncated cone, the said ledge (281) and notch (282) mate, when wall (271) slit-like openings in the operating conditions are pressed to each other.

9. Lamella plate (270)used in the manufacture of tires of the vehicle in accordance with claim 1 and intended to be formed in the protector block (22) slit-like notches (27), and this plate in its longitudinal direction is formed with a wave-like configuration capable of forming on the plate (270) at least two main surfaces (A, B)arranged in series and are mutually offset one relative to another by a given distance (C), and between these surfaces is a transition zone (S), and in the adjacent main surfaces (A, B) formed the blocking elements (28), which form one of the walls (21) of the respective slit-like notches (27) the ledge (281) in the axisymmetric form of a truncated cone, and the other wall (271) - dredging (282) in the axisymmetric form of a truncated cone, the said ledge (281) and a recess (282) mate, when wall (271) slit-like openings in the operating conditions are pressed to each other.



 

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15 cl, 11 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to winter tire tread pattern. Tread central area comprises reiterating circular row of first V-like recesses arranged at central plane. Note here that every V-like recess comprises first recess branches diverging in first circular direction and reiterating row of second V-like recesses at central plane and including second recess branches diverging in circular direction opposite the first one. Every said V-like recess is overlapped by multiple opposed second V-like recesses. Branches of first V-like recesses feature depth varying with length from 2 to 7 mm at top section of the branch at the center to branch end. Branches of first V-like recesses vary in width, like in length, from narrower top branches to wider medium branches and, further, to narrower end section so that branch volume per unit length does no vary.

EFFECT: better tread adhesion in winter.

18 cl, 11 dwg

Winter tire // 2482969

FIELD: process engineering.

SUBSTANCE: invention relates to automotive industry, namely, to winter tire tread pattern. Proposed tire comprises tread with circular central region wherein blocks are located as symmetric patter on opposite sides of circular equatorial plane of the tire. Tread comprises one or several circular recesses confined by edges of opposite blocks. Pair of two opposite block comprises block edge facing said recess and row of tenons formed along the edges of opposite blocks facing the recess and inclined radially. Tenons on the edge of one opposite block are inclined in direction opposite that on opposite block teeth inclination. Block on tread central zone recess side comprises multiple transverse pads spaced apart in circle toward lateral side. Said pads extend to line of teeth along block edge facing the recess and are leveled therewith.

EFFECT: better tread adhesion in winter.

10 cl, 10 dwg

Pneumatic tire // 2478485

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to winter tire tread pattern. Pneumatic ire has cutouts arranged across the tire on blocks surface in contact with road surface. One end of said cutouts opens into main longitudinal groove 21. Cutouts 4 are located at block periphery, their one part 41 opening into main longitudinal groove 21 and second part being located at block centre. First part of cutout 41 features linear shape if cross-section is seen in direction perpendicular to cutout length and comprises two opposed face walls 411 and 412 of said first part as well as ledge 413 and recess 414 located at face walls 411, 412 of said first part. Besides, second part 42 features shape curved across cutout shape if cross-section is seen in direction perpendicular to cutout length and comprises two opposed face walls 421, 422 of cutout second part.

EFFECT: improved performances on ice.

20 cl, 21 dwg, 1 tbl

Pneumatic tire // 2473430

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Group GB of small blocks is arranged on, at least, a section of tire running surface 1. Group of small blocks comprises multiple small blocks 3 located side by side. Said group comprises, at least, one lengthwise main groove designed by position 4 including through section of said groove extending linearly along running surface and, at least, one ribbed lateral section 6 adjoining lengthwise main groove to make side surface 5 of said groove extending continuously in longitudinal direction. Density D of small blocks varies from 0.003 to 0.04 pc/mm2 to express amount of said block per actual area of contact spot.

EFFECT: better water removal, ruled out irregular wear, better running on ice and snow.

4 cl, 7 dwg, 2 tbl

Pneumatic tire // 2472630

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Proposed tire 1 comprises tread 2 with central section L1 located on both sides of equatorial plane 7, and sections 8, 12 in two shoulders. Central section L1 is separated from parts 8, 12 in shoulders by two circular grooves 3, 6, and has, at least, one circular rib 9 arranged between first and second grooves 3, 4. Tread 2 features void factor smaller than 0.28. Rib 9 comprises transverse grooves 16 extending on distance making, at least, 50% of tread width. Note here that said transverse grooves 16 comprises, at least, one curvilinear section. Note also that said grooves 16 have width smaller than that of circular grooves 3, 4, while, at least, one of circular grooves that makes circular rib, has, at least, one lateral wall that makes wavy profile.

EFFECT: better bite.

28 cl, 7 dwg, 1 tbl

Pneumatic tire // 2471639

FIELD: transport.

SUBSTANCE: invention relates to tread pattern of motor tire. Pneumatic tire includes tread (2) with central longitudinal groove (3a), shoulder longitudinal grooves (3b) passing at both sides of central longitudinal groove (3a) and intermediate areas (4a) of ground coupling separated by central longitudinal groove (3a) shoulder longitudinal grooves (3b). Each of areas (4a) of ground coupling includes narrow grooves (5) passing from position spaced to inner side in axial direction of tire from shoulder longitudinal groove (3b); intermediate tilted grooves (6) each one of which goes tilted from narrow groove (5) towards central longitudinal groove (3a) and terminates without connection with central longitudinal groove (3a), and connecting grooves (7), interconnecting intermediate tilted grooves (7) adjacent in longitudinal direction of tire. Connecting grooves (7) are tilted relative to tire longitudinal direction in the same direction as intermediate tilted grooves (6) and at less angle than intermediate tilted grooves (6).

EFFECT: better drainage and antinoise characteristics of tire.

5 cl, 8 dwg, 1 tbl

FIELD: transport.

SUBSTANCE: at maximum height of tire tread pattern, circumferential grooves (1, 2), tilted grooves (9), and transversal grooves (7, 8, 10, 14, 14a, 18) are made, which delimit checkers (4, 6, 12, 15, 17a, 17b) of tread pattern and are respectively provided with multiple slots (19, 20, 21, 22), oriented essentially in transversal direction of tread pattern. Transversal grooves (7, 8, 10, 14, 14a, 18) along their length have less depth than circumferential grooves (1, 2).

EFFECT: better dynamic properties of tire on winter roads without lowering tread rigidity and thus without deterioration of dynamic properties on dry roadway.

7 cl, 4 dwg

Tire for damp road // 2461465

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Tire 1 comprises tread 2 with pattern 3 including first and second pattern extending along tire circle to make module 5 with smaller pattern spacing and module 8 with larger pattern spacing. Note here that all modules comprise first groove 15 with initial section 32 and section 34 with larger cross-section, both sections extending from outer axial first end 30 toward opposite axial second end 31. Note here that section 34 is dead section on, at least, it iner axial side in zone of contact spot. Initial section and that with larger cross-section have first width W1 and second width W2, respectively, and feature module 5 W2-to-W1 ratio exceeding that of module 8.

EFFECT: higher tire rod grip.

36 cl, 2 dwg

Pneumatic tire // 2459713

FIELD: transport.

SUBSTANCE: invention relates to automotive tire with tread for winter operating conditions. Set of GB blocks is arranged on, at least, part of tire tread 1 with blocks 3 located nearby each other. Said blocks are formed by grooves 2 and separated one from another. Symbol P (mm) designates characteristic spacing of blocks in said group GB. Symbol W (mm) designated width of set of blocks. Symbol a (pcs) designates quantity of blocks 3 in design area Z of aforesaid group GB. Design area is demarcated by characteristic length of spacing P and width W while symbol N (%) designates negative factor in area Z. Density S of blocks per unit of actual area of contact spot of said group is defined by the formula S=a/{P×W×(1-N/100)} and set in the range of at least 0.003 (pc./mm2) to not over 0.04 (pc./mm2).

EFFECT: higher efficiency on ice.

6 cl, 18 dwg, 4 tbl

FIELD: transport.

SUBSTANCE: invention relates to automotive tire to be used for travelling over ice and snow. Running surface (10) of non-studded snow tire is positioned so that side grooves (3A, 3B, 3C, 3D, 5) running in axial direction in each of grain blocks (2A, 2B, 2C, 2D) the axial length of side grooves (3A, 3B, 3C, 3D) disclosing in at least one of straight longitudinal grooves (1, 1A, 1B) running adjacent to grain block where side groove is contained is called groove edge element. Ratio of total length of groove edge elements on inner running surface IN to total length of groove edge elements on outer running surface OUT is equal to 1.03-1.3. Ratio of negative outer running surface coefficient OUT to negative inner running surface coefficient IN is equal to 0.85-1.0.

EFFECT: higher grip, as well as driving stability during travelling over ice and snow.

2 cl, 1 dwg

Pneumatic tire // 2456168

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Tire carcass ply is laid between two double beads. Breaker ply is recessed on carcass ply outer peripheral side in tread section. Tread is provided with multiple main grooves extending along tire circle. Maximum depth of each main groove varies from 8.5 mm to 15.0 mm. Relationship between height of actual tire profile SH and that of profile SHstd calculated from tire size is set to 0.97≤α≤0.99. Relationship between contact areas makes 65-70% under conditions of measurements whereat air pressure makes 200 kPa and load making 50% of bearing capacity at said air pressure. Mean contact pressure P varies from 300 kPa to 400 kPa.

EFFECT: longer life, efficient braking on moistened surface.

13 cl, 4 dwg, 1 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to curing of rubber articles, for example, tires and tire treads. In compliance with this method, one or several rods with high thermal conductivity are used in mould to direct heat to article curing-limiting parts. One or several rods with high thermal conductivity are placed in mould at points that allow heat transfer to article curing-limiting part.

EFFECT: decreased curing interval, higher uniformity of curing.

15 cl, 10 dwg

Pneumatic tire // 2443572

FIELD: transport.

SUBSTANCE: invention relates to automotive tire to be used on ice- or snow-covered roads. Slit-like drain grooves 11X made in rib 5 in the tire equatorial plane (TE) are formed with such shape that degree rib 5 is flattened by external force to, is smaller in tire rotational direction than that in opposite direction. Every block 10 in each shoulder zone 1S has slit-like drain grooves 11Ma in section 10A of the block pressed-in side features such 3D shape that makes block 10 with drain grooves 11Ma, when flattened by external force, smaller in direction of tire rotation compared with direction opposite the tire rotation. Every block 10 in each shoulder zone 1S has slit-like drain grooves 11Ma in section 10A of the block pressed-in side features such 3D shape that makes block 10 with drain grooves 11Ma, when flattened by external force, smaller in direction opposite the tire rotation compared with direction of tire rotation.

EFFECT: better braking properties on ice, reduced wear.

4 cl, 5 dwg

FIELD: transport.

SUBSTANCE: tire protector incorporates the first and second annular grooves separating the central area from the first and second arm areas. The protector incorporates also an annular cut made in the first arm area at a distance from the first annular groove and multiple repeated modules of crosswise grooves. The first arm area of every crosswise groove module contains, at least, one main crosswise groove with the first, in fact, rectilinear part inclined to the first angle to the radial plane, the second, in fact, rectilinear part inclined at the second angle to the said radial plane and arranged between the said annular cut and the first annular groove, and the first bent part connecting the first and second rectilinear parts.

EFFECT: increased tire performances.

27 cl, 16 dwg, 4 tbl

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