Tires without spikes

FIELD: transport.

SUBSTANCE: proposed tire differs from known designs in that width 2W of breaker layer 12 arranged radially outward made up of breaker layers that form breaker 8 makes 60-70% of tire maximum width MW.

EFFECT: better run on ice, simplified design.

3 cl, 2 dwg, 1 tbl

 

The technical field to which the invention relates.

The invention relates to neshipovannyh tire having a breaker consisting of two bragarnyk layers, which are arranged so that their steel cords inclined in mutually opposite directions relative to the Equatorial plane between the layers. In particular, the present invention is to improve performance on ice due to the use of a simple configuration.

The level of technology

To improve handling on icy and snowy road surfaces neshipovannyh bus supply lots of grooves and/or made of a very soft rubber to compensate for the rigidity of the tread. Also available, for example, to perform the sidewall of two layers of rubber (see document JP 2001206022 A).

Disclosure of inventions

However, the bus this configuration has the disadvantage that the production cost is inevitably increased due to the complexity of the tyre construction and the material used. The present invention aims to eliminate this disadvantage and to develop noshirvani tires that can improve the performance on ice without complicating the design and material.

1. Neshipovannyh tire according to the invention has a belt consisting of two bragarnyk layers, and bracerie layers are thisway, their steel cords inclined in mutually opposite directions relative to the Equatorial plane between the layers, and is characterized by the fact that the width located outside in the radial direction of the layer of the breaker of the above layers of the breaker is 60-70% of the maximum width of the tire.

2. Neshipovannyh bus described in paragraph 1, the width of the inside in the radial direction brokerage layer for 24-36 mm more than the width of which is located outside in the radial direction brokerage layer.

3. Neshipovannyh bus described in paragraph 1 or 2, the width of the tread is 105-125% of the width located outside in the radial direction brokerage layer.

According to the description of the tyre, indicated in item 1, the width of which is located outside in the radial direction brokerage specified layer of the breaker is 60-70% of the maximum width of the tire, so that the cutting angle, which represents the angle between the road surface and the front side of the periphery of the tread on the tire side section is reduced by reducing the rigidity of the breaker, while retaining the stability of motion. This prevents the flow of water formed in the contact of the tyre with the road surface when driving on icy roads, in the grooves of the tread. When located outside the width in the radial direction of the break the aqueous layer is less than 60% of the maximum width of the tire, the rigidity of the breaker is reduced to an undesirable size, thereby deteriorating the stability of motion. On the other hand, when the width located outside in the radial direction brokerage layer is more than 70% of the maximum width of the tire, the rigidity of the breaker becomes unacceptably high, which excludes the effect of preventing the ingress of water.

According to the description of the tyre, indicated in item 2, the width of the inside in the radial direction brokerage layer for 24-36 mm greater than the width located outside in the radial direction brokerage layer. This ratio was chosen because when the difference is less than 24 mm width inside in the radial direction brokerage layer becomes so small that there is a reduction in the overall rigidity of the breaker, leading to a deterioration in the sustainability movement. On the other hand, when the difference is more than 36 mm, width located inside in the radial direction brokerage layer becomes so large that excessive increase in overall rigidity of the breaker, the rake angle becomes small enough. In addition, the ends located inside in the radial direction brokerage layer make a significant move when you change the shape of the cross section of the tire at each turn when driving on the road, which potentially can lead to the separation of the ends of the breaker.

According to the description of the tyre, indicated in item 2, the width of the tread is 105-125% of the width located outside in the radial direction brokerage layer in the tire described in paragraph 1, in which the rigidity of the breaker is reduced to increase the length of tire contact with the supporting surface in comparison with the contact length standard tyres can have a smaller width of contact with the supporting surface while maintaining contact area with the supporting surface. Thus, the wedge effect on the snowy roads can be increased, which improves grip. When the ratio is less than 105%, the width of the tread becomes so small that there is a reduction of the rigidity of the tread and the deterioration of the resistance movement. On the other hand, when the ratio is more than 115%, the width of the tread becomes so small that the above-mentioned wedge effect can not be obtained. Brief description of drawings

Figure 1 is a view in cross section neshipovannyh bus in accordance with one embodiments of the present invention, made by a plane passing through the Central axis of the tire;

figure 2 - schematic view of the tire in contact with the supporting surface.

Legend

1 - the tread area;

2 - bucovinei area;

3 is a side section;

4 borto the second wing;

5 is a radial carcass;

5A is the main section of the frame 5;

5b - wrapped section of the frame 5;

6 - filling the cord side of the wing;

7 - protector;

8 - Brecker;

10 - neshipovannyh tire;

11 - first brickery layer;

12 - second brickery layer;

20 - bar indicator;

θ - front angle.

Detailed description of the invention

The figure 1 shows a view in cross section neshipovannyh tire according to one of embodiments of the present invention by a plane passing through the Central axial line. Neshipovannyh the tire 10 has a tread section 1, two bokovinah section 2 connected to the end sections of the tread section 1 and going inside in the radial direction, the side sections 3, located on the inner periphery bokovinah sections 2, and side wings 4 embedded in the respective side parts 3. A radial carcass comprised of at least one layer of the frame, forms a torus, located between the side wings, and each terminal site of the radial carcass is wrapped around the side of the wing to the outside in the radial direction. Filling the cord 6 airborne wings is located between the main plot 5A and wrapped parcel 5b and is adjacent to the outer periphery side of the wing. The tread section 1 is equipped with the protector 7, forming a platform Comte is the support surface, the radial carcass 5 and the belt 8 is located between the radial carcass 5 and the protector 7.

Breaker 8 is formed of two spaced one above the other in the radial direction brokername layers, cords which are inclined in mutually opposite directions with respect to the Equatorial plane between the layers. Everywhere next brickery layer 11 located inside in the radial direction, will be called brakeman layer, and brokery layer 12 located outside in the radial direction, is called the second brakeman layer.

The present invention is based on the tire having the above configuration, and wherein the width 2W of the second brokerage layer 12 is 60-70% of the maximum width MW of the tire. Since the width of the second brokerage layer 12 is 70% or less, the rigidity of the breaker is substantially reduced to reduce the rake angle, which represents the angle θ between the reference surface G and the periphery of the tread from the front on the bus side, shown in figure 2. This prevents the ingress of water formed in the contact between the tyre and the road surface when driving on snow-covered roads, in deep areas of the tread.

When the width 2W of the second brokerage layer is more than 70% of the maximum width MW tires, front angle becomes unacceptable resulting in not conserved characteristics, required for driving on icy roads. On the other hand, when the ratio becomes less than 60%, is undesirable increase the rigidity of the breaker, which impairs the stability of motion.

It should be noted that the maximum width MW bus width 1W, 2W bragarnyk layers represent the width, measured when installing tires on a specified rim at a given internal pressure. Width 1W, 2W bragarnyk layers represent the straight-line distance measured from one edge brokerage layer to the other side of brokerage layer in the direction perpendicular to the Equatorial plane, but not along brokerage layer.

In this connection it is necessary to indicate that the specified internal pressure and rim are defined as follows. Set the internal pressure is determined by the air pressure corresponding to the specified applicable for the given dimension load, and is controlled by an industry standard, as specified rim corresponds to the standard rim (or allowable rim, or an approved rim) of a suitable size, defined in the same industry standard. Above a given load is the maximum load (maximum load capacity) of a single wheel of a suitable size, defined in the same industry standard.

With regard to industrial is about standard, the current standard established in each region in which it is produced or used tire. Examples of such standards are the "Yearbook of the Corporation Association of manufacturers of tyres and rims (including design guidelines), published in the United States, "the Handbook of European standards technical organization of manufacturers of tires and rims", published in Europe, and JATMA Yearbook"published by the Japan Association for tire manufacturers.

The reason why the range of widths of the second brokerage layer 12 is determined not on the basis of the tread width or the width of the first layer 11, and on the basis of the maximum width of the tire lies in the fact that the maximum tire width is the base size of bus width and can be clearly defined by the dimensions of the tire. The rigidity of the breaker, obtained from the width of the second brokerage layer 12, affects the above-mentioned front angle not in combination with other materials, and directly. For this reason, the size is uniquely determined when the specified size is used as the standard.

Neshipovannyh bus width 10 1W first brokerage layer 11 for 24-36 mm more than the width 2W of the second brokerage layer 12. This means that the width 2W of the second brokerage layer 12 is smaller than the width of a standard tire, and the width 1W first brokerage layer is essentially the same as the width with andartes tires. The result is optimal maintaining the rigidity of the whole of the breaker 8. When the difference between the width 1W first brokerage layer 11 and the width 2W of the second brokerage layer 12 is less than 24 mm, the rigidity of the breaker becomes so large that the front corner is too large to provide acceptable performance on ice. On the other hand, when the difference is more than 36 mm, width located inside in the radial direction brokerage layer becomes so large that the overall rigidity of the breaker turns out excessive, resulting in the cutting angle is not sufficiently small value. In addition, the ends located inside in the radial direction brokerage layer make a significant move when the shape changes of the cross section of the tire at each turn while driving on expensive, potentially leading to the separation of the ends of the breaker.

In addition, the width 2W of the second brokerage layer is preferably 80-95% of the width TW of the tread. When the ratio is less than 80%of tread width TW becomes so small, that there is a reduction of pressure on the bearing surface and the deterioration of the coupling properties of snow. On the other hand, when the ratio is more than 95%, the width of the tread becomes so small that decreases the resistance movement is which roads.

In addition, the dynamic module of elasticity of the tread 7 of the aforementioned bus is preferably 3 to 20 MPa. The dynamic module of elasticity of the tread 7 summer tires, which is not designed for driving on snowy and icy roads, is in the range of 25-50 MPa. When the dynamic module of elasticity of the tread area neshipovannyh bus, which is designed for driving on icy and snowy roads is less than 20 MPa, the protector 7 can easily undergo deformation. The result is to increase the area of contact with the supporting surface and the increase of the coefficient of friction on ice. However, when the dynamic module of elasticity is less than 3 MPa, the protector becomes excessively soft, which significantly impairs the stability of motion. Examples

For experiments were prepared polipovidnye tires with different width 2W of the second brokerage layer for which you have made tests to determine the front corners of conduct on the ice, braking performance on ice, stability in straight-line driving and stability while driving. The width 2W of the second brokerage layer, the relationship 2W/MW in % of the width 2W of the second brokerage layer to the maximum width MW of the tire and the results are given in the table.

Prepared for the test tires had the following overall the e parameters:

tyre size: 195/65R15;

the maximum bus width: 198 mm;

the width of the first brokerage layer 1W: 153 mm;

tread width TW: 153 mm;

the angle of the cords brokerage layer relative to the Equatorial plane: 24 C;

cord breaker: steel (twisted structure 1×3).

Rake angle was measured as follows. The scaled indicator 20 is moved along the support surface for receiving the profile from not being in contact with the supporting surface of the tire to come in contact area of the tire a distance from the reference surface G to the bus, and on the basis of the obtained profile was calculated rake angle.

The above tests were conducted for the tires installed on the specified rim, inflated to a specified internal pressure and installed on the real car. Behavior on the ice was estimated by the driver based on the braking performance, characteristics, hill start assist, characteristics of rectilinear motion and characteristics of the input in turn.

Brake specifications braking on ice was estimated by measuring the stopping distance when braking from a speed of 20 km/h with full inclusion of the brakes. The results are indicated in the points table in which the result of comparative example 2 taken as 100 points.

Stability when driving was estimated by the driver based on the PE the functions and stability when exposed to the steering wheel during straight driving on dry test site. The results are shown in the points table in which the result of comparative example 2 taken as 100 points.

Comparative example 1Example 1Example 2Example 3Comparative example 2
The width 2W of the second beckroge layer (mm)116119129139141
2W/MW (%)5960657071
Rake angle (degrees)2261112
Behavior on ice105105102100100
The braking performance on ice106106 104102100
The resistance movement909898100100

1. Bus neshipovannyh with Brecker, consisting of two bragarnyk layers, arranged so that the steel cords inclined in mutually opposite directions relative to the Equatorial plane between the layers, the width of which is located outside in the radial direction brokerage layer of these two bragarnyk layers is 60-70% of the maximum width of the tire.

2. Bus neshipovannyh according to claim 1, characterized in that the width brokerage layer located radially inside the 24-36 mm greater than the width brokerage layer located radially outside.

3. Bus neshipovannyh according to claim 1, characterized in that the ratio of the width of the projector to the width set in the radial direction from the outside brokerage layer is 105-125%.



 

Same patents:

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Proposed tire features ellipticity factor equal to or under 50%. Breaker layers 9, apart from outer breaker layer 10, are arranged so that breaker layer cords are arranged at θ 10-70° relative to tire lengthwise direction. Said outer breaker layer 10 is made of coiled layer 12 of coiled tape provided with steel cords in tire lengthwise direction. Said breaker layer 10 comprises section 10A located between fold position Po on opposite sides from tire equator and fold position 10B bent in U-like manner from position Po toward tire equator. Section 10A features width varying from 70% to 80% of width of contact between tread and ground while fold section 10 B has width varying from 5.0 mm to 0.5 of width.

EFFECT: longer life.

9 cl, 8 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Three belt layers (8, 9, 10) are arranged on outer peripheral surface of tire carcass in support section. Note here that said belt layers have angle a of inner belt layer (8) to direction along tire circumference varies from 15° to 30°, angle β of the cord of medium belt layer (9) to direction along tire circumference makes at least 40° angle γ of outer belt layer (10) to direction along tire circumference varies from 35° to 70°.

EFFECT: higher stability and control over punctured tire, stable driving on snow.

13 cl, 5 dwg, 3 tbl

FIELD: chemistry.

SUBSTANCE: band made from crude fabric can be used as an auxiliary layer, cushion layer and reinforcement base in the carcass of a tyre. The band is made by saturating crude mini-fabric, which contains several separate strands, with a solvent based adhesive. The adhesive, which contains a solvent and an elastomer composition, is dried such that, most of the solvent evaporates. The elastomer composition remains, covering the fabric and forming a band that way.

EFFECT: reduced cost of making the said band, as well as improvement of its quality.

12 cl, 7 dwg

FIELD: transport.

SUBSTANCE: tyre contains at least two inserts (104) made of stitched elastomeric material radial superimposed from outside with regard to breaker construction element near outer axial edges of breaker construction element. At that, each insert contains inner, as per axis, part located between breaker construction element and tread band, insert tapers towards tyre girdle and outer, as per axis, part located between skeleton construction and respective tyre side and insert tapers towards tyre axis of rotation. Stitched elastomeric material has dynamic modulus of elasticity (E') measured at 70°C comprising less than 7 MPa.

EFFECT: increase of reliability and quality of tyre.

38 cl, 2 dwg, 2 tbl, 2 ex

FIELD: transport engineering; tire industry; highly efficient tires.

SUBSTANCE: proposed tire for vehicle wheels includes carcass structure of toroidal shape whose opposite side edges are coupled by corresponding right-hand side and left-hand side bead wires to form corresponding beads; breaker structure applied in outer relative to radius position relative to said carcass structure: tread band radially applied to breaker structure; at least one layer of cross-linked elastomer material applied in inner relative to radius position relative to said tread band; pair of side strips applied from side to opposite sides relative to carcass structure; at least one layer of cross-linked elastomer material has following characteristics: dynamic modulus of elasticity E¹ measured at 70°C not lower than 20 MPa, preferably, from 25 MPa to 50 MPa; ratio between modulus of elasticity at extension at 100% elongation (MIOO) and modulus of elasticity at extension at 10% elongation (MIO) not lower than 1.5, preferably, from 2 to 5. One layer of cross-linked elastomer material is preferably laid between tread band and breaker structure. Invention provides better characteristics of tire during operation at high driving speed and/or extreme driving conditions - rigid steering, simultaneously with satisfactory behavior at normal driving conditions - soft steering.

EFFECT: improved service characteristics of tire.

50 cl, 4 ex, 5 tbl, 2 dwg

FIELD: transport engineering.

SUBSTANCE: proposed wheel for road vehicles has wheel body, hub with hole for fitting wheel on axle, tire casing, tire with sectional rubber pneumatic tube divided into eight separate pneumatic chambers, each provided with its own charging device. Found inside tire on upper edge of casing is metal protective rim with welded-to prongs with tenons on ends press-fitted into holes in casing surface. Eight holes are drilled in wheel body to let out charging unions of each separate pneumatic chamber. Either new or used tire can be used. According to second version, wheel has body, hub with hole for fitting wheel on axle, casing and tire. Found inside tire on upper edge of casing is protective metal rim with welded-to prongs with tenons on end which are press-fitted into holes in upper part of casing surface.

EFFECT: improved stability of wheel and safety of vehicle.

4 cl, 5 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to pneumatic tyre with radial carcass reinforcement over which ridge reinforcement consisting of at least two working layers of ridge formed by metal reinforcement members is arranged in radial direction. Said reinforcement members intersect from one layer to the other forming angles of 10 to 35° with circumferential direction. Ridge reinforcement includes at least one additional reinforcement formed by metal reinforcement members orientated in circumferential direction. Additional reinforcement consists of at least two layers of metal members of small diameter not exceeding 0.6 mm. Metal reinforcement members of additional reinforcement are assemblies, type 1 x n where n is from 2 to 5, made of steel featuring high breaking strength SHT, and diameter of threads is within 12/100 and 30/100.

EFFECT: increased strength and wear resistance of tyres.

10 cl, 3 dwg

FIELD: automobile transport.

SUBSTANCE: proposed air-core tire supporting the load without internal air pressure includes section of tread in contact with road and side strip sections passing radially inwards from said section of thread and secured in sections of tire beads adapted for remaining attached to wheel at rotation of tire. Shifted-layer carcass passes between beads to support side strips. Reinforced ring-shaped strap is arranged radial inside section of tread. Said strap contains elastomer shift layer in radially-outer side of shifted-layer carcass, and diaphragm is glued from radially-outer side of elastomer shift layer. Shift layer and diaphragms have modulus of elasticity at longitudinal extension exceeding modulus of shift of shift layer to provide deformation of tire section in contact with road under load into flat contact area owing shift deformation in shaft layer with keeping constant length of diaphragm.

EFFECT: provision of reliable operation.

19 cl, 14 dwg

FIELD: automotive industry; tire industry.

SUBSTANCE: reinforcing members of reinforcing material layer are provided with separate coating made of rubber mixture of preset composition and physical properties. Reinforcing members arranged parallel to each other are coated at one side with first rubber layer or so-called first lining layer featuring constant composition and properties, while on opposite side, members are coated with second lining rubber layer of composition and properties changing as a function of meridional position on said layer in pneumatic tire.

EFFECT: increased strength of tire.

29 cl, 5 dwg

FIELD: automotive industry.

SUBSTANCE: proposed elastic tire carrying load without internal air pressure includes tread in contact with ground and areas of side strips passing in radial direction inwards from tread area and secured in tire bead areas adapted for remaining connected with wheel when tire rolls. Reinforced ring strip is arranged inside tread in radial direction. Said contains elastomer layer working in shifting, at least first diaphragm connected with inner surface of elastomer layer working in shifting is radial direction, and at least second diaphragm connected with external surface of elastomer layer working in shafting in radial direction.

EFFECT: improved reliability of tire owing to possibility of its operation in deflated state.

27 cl, 1 tbl, 13 dwg

FIELD: road vehicles.

SUBSTANCE: proposed tire has radial body with one or several breaker layers on place close to outer surface, and strengthening layer with nylon cord wound in spiral over breaker. It is desirable that tread belt of tire be formed by underlayer and outer layer, one placed on the other, elasticity and/or hardness characteristics of first layer remaining stable at temperatures within 20 and 110oC.

EFFECT: improved performance characteristics of tires.

23 cl, 4 tbl, 2 dwg

FIELD: automotive industry.

SUBSTANCE: proposed elastic tire carrying load without internal air pressure includes tread in contact with ground and areas of side strips passing in radial direction inwards from tread area and secured in tire bead areas adapted for remaining connected with wheel when tire rolls. Reinforced ring strip is arranged inside tread in radial direction. Said contains elastomer layer working in shifting, at least first diaphragm connected with inner surface of elastomer layer working in shifting is radial direction, and at least second diaphragm connected with external surface of elastomer layer working in shafting in radial direction.

EFFECT: improved reliability of tire owing to possibility of its operation in deflated state.

27 cl, 1 tbl, 13 dwg

FIELD: automotive industry; tire industry.

SUBSTANCE: reinforcing members of reinforcing material layer are provided with separate coating made of rubber mixture of preset composition and physical properties. Reinforcing members arranged parallel to each other are coated at one side with first rubber layer or so-called first lining layer featuring constant composition and properties, while on opposite side, members are coated with second lining rubber layer of composition and properties changing as a function of meridional position on said layer in pneumatic tire.

EFFECT: increased strength of tire.

29 cl, 5 dwg

FIELD: automobile transport.

SUBSTANCE: proposed air-core tire supporting the load without internal air pressure includes section of tread in contact with road and side strip sections passing radially inwards from said section of thread and secured in sections of tire beads adapted for remaining attached to wheel at rotation of tire. Shifted-layer carcass passes between beads to support side strips. Reinforced ring-shaped strap is arranged radial inside section of tread. Said strap contains elastomer shift layer in radially-outer side of shifted-layer carcass, and diaphragm is glued from radially-outer side of elastomer shift layer. Shift layer and diaphragms have modulus of elasticity at longitudinal extension exceeding modulus of shift of shift layer to provide deformation of tire section in contact with road under load into flat contact area owing shift deformation in shaft layer with keeping constant length of diaphragm.

EFFECT: provision of reliable operation.

19 cl, 14 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to pneumatic tyre with radial carcass reinforcement over which ridge reinforcement consisting of at least two working layers of ridge formed by metal reinforcement members is arranged in radial direction. Said reinforcement members intersect from one layer to the other forming angles of 10 to 35° with circumferential direction. Ridge reinforcement includes at least one additional reinforcement formed by metal reinforcement members orientated in circumferential direction. Additional reinforcement consists of at least two layers of metal members of small diameter not exceeding 0.6 mm. Metal reinforcement members of additional reinforcement are assemblies, type 1 x n where n is from 2 to 5, made of steel featuring high breaking strength SHT, and diameter of threads is within 12/100 and 30/100.

EFFECT: increased strength and wear resistance of tyres.

10 cl, 3 dwg

FIELD: transport engineering.

SUBSTANCE: proposed wheel for road vehicles has wheel body, hub with hole for fitting wheel on axle, tire casing, tire with sectional rubber pneumatic tube divided into eight separate pneumatic chambers, each provided with its own charging device. Found inside tire on upper edge of casing is metal protective rim with welded-to prongs with tenons on ends press-fitted into holes in casing surface. Eight holes are drilled in wheel body to let out charging unions of each separate pneumatic chamber. Either new or used tire can be used. According to second version, wheel has body, hub with hole for fitting wheel on axle, casing and tire. Found inside tire on upper edge of casing is protective metal rim with welded-to prongs with tenons on end which are press-fitted into holes in upper part of casing surface.

EFFECT: improved stability of wheel and safety of vehicle.

4 cl, 5 dwg

FIELD: transport engineering; tire industry; highly efficient tires.

SUBSTANCE: proposed tire for vehicle wheels includes carcass structure of toroidal shape whose opposite side edges are coupled by corresponding right-hand side and left-hand side bead wires to form corresponding beads; breaker structure applied in outer relative to radius position relative to said carcass structure: tread band radially applied to breaker structure; at least one layer of cross-linked elastomer material applied in inner relative to radius position relative to said tread band; pair of side strips applied from side to opposite sides relative to carcass structure; at least one layer of cross-linked elastomer material has following characteristics: dynamic modulus of elasticity E¹ measured at 70°C not lower than 20 MPa, preferably, from 25 MPa to 50 MPa; ratio between modulus of elasticity at extension at 100% elongation (MIOO) and modulus of elasticity at extension at 10% elongation (MIO) not lower than 1.5, preferably, from 2 to 5. One layer of cross-linked elastomer material is preferably laid between tread band and breaker structure. Invention provides better characteristics of tire during operation at high driving speed and/or extreme driving conditions - rigid steering, simultaneously with satisfactory behavior at normal driving conditions - soft steering.

EFFECT: improved service characteristics of tire.

50 cl, 4 ex, 5 tbl, 2 dwg

FIELD: transport.

SUBSTANCE: tyre contains at least two inserts (104) made of stitched elastomeric material radial superimposed from outside with regard to breaker construction element near outer axial edges of breaker construction element. At that, each insert contains inner, as per axis, part located between breaker construction element and tread band, insert tapers towards tyre girdle and outer, as per axis, part located between skeleton construction and respective tyre side and insert tapers towards tyre axis of rotation. Stitched elastomeric material has dynamic modulus of elasticity (E') measured at 70°C comprising less than 7 MPa.

EFFECT: increase of reliability and quality of tyre.

38 cl, 2 dwg, 2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: band made from crude fabric can be used as an auxiliary layer, cushion layer and reinforcement base in the carcass of a tyre. The band is made by saturating crude mini-fabric, which contains several separate strands, with a solvent based adhesive. The adhesive, which contains a solvent and an elastomer composition, is dried such that, most of the solvent evaporates. The elastomer composition remains, covering the fabric and forming a band that way.

EFFECT: reduced cost of making the said band, as well as improvement of its quality.

12 cl, 7 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Three belt layers (8, 9, 10) are arranged on outer peripheral surface of tire carcass in support section. Note here that said belt layers have angle a of inner belt layer (8) to direction along tire circumference varies from 15° to 30°, angle β of the cord of medium belt layer (9) to direction along tire circumference makes at least 40° angle γ of outer belt layer (10) to direction along tire circumference varies from 35° to 70°.

EFFECT: higher stability and control over punctured tire, stable driving on snow.

13 cl, 5 dwg, 3 tbl

Up!