Winter tire

FIELD: transport.

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 pattern on opposite sides of circular equatorial plane of the tire. Said blocks located in symmetry on opposite sides of said central plane comprises multiple spaced apart and extending across wavy segments. Separate pairs of adjacent segments are connected by one or several circular grooves. Wavy segments comprise areas of variable depth and one or more deeper area and one or more areas not that deep. Aforesaid circular groove connecting the pair of adjacent wavy segments on opposite ends of the groove cross wavy segments in areas not deep.

EFFECT: better tread adhesion in winter.

15 cl, 11 dwg

 

The technical field

The invention relates, in General, to the tires of the vehicle and, in particular, to figure the center of the tread winter tires.

The level of technology

Winter tires designed for winter driving conditions, are designed for driving on surfaces with reduced compaction, such as snow-covered highway. These tires are designed to provide the respective characteristics of the clutch, brake force and control, when you show indicators of a dry road with good quality, wear and noise. The tread winter tires should be subjected to such competing goals to ensure a satisfying user requirements-performance tires.

The invention

According to one aspect of the invention, the tire wheels of the vehicle contains a tread containing a circular Central region of the tread, in which the blocks are arranged in a symmetrical figure with opposite sides of the circular Central Equatorial plane of the tire. Symmetrically located blocks from opposite sides of the Central plane contain multiple distributed and continuing across undulating lamellae perpendicular to the blocks. A separate pair of adjacent slats are connected to one or more oriented around the circle ditches the AMI.

In an additional aspect, the opposite sides of the Central region of the tread is limited to a circular recesses, one circular recess is within the corresponding half of the tire tread.

According to another additional aspect, the grooves within the tread of the tyre enclosed in the Central region of the tread. Grooves within each block essentially linear and pairwise aligned in the radial direction.

Adjacent pair of the United wavy lamellae, in another aspect, contains the region of varying depth and contain one or more in-depth area(s) and one or more Neuglobsow area(s). Located in a circle groove connecting the pair of adjacent undulating lamellae from opposite ends of the groove crosses the undulating lamellae in popularnych areas slats.

"The ratio of the height of the tire section width" means the ratio of the height of the cross section (CS) to the width of its cross section (SHS), multiplied by 100% to Express in percent.

"Asymmetric tread" means the protector, which contains a tread pattern which is asymmetrical relative to the Central plane or Equatorial plane EP of the tire tread.

"Axial" and "axially" means lines or directions that are parallel to the axis of rotation W is us.

"Side tape" - a narrow strip of material located on the outside of the tire bead to protect the layers of the frame from wear and cuts on the rim and the strain distribution over the rim.

"Circular" means lines or directions, continuing along the perimeter of the circular tread perpendicular to the axial direction.

"Central Equatorial plane (CPU)" means the plane perpendicular to the axis of rotation of the tire and passing through the center of the tread.

Mark "tread" means the spot or area of contact of the tire tread with a flat surface at zero speed and under normal load and pressure.

"Recess" means an elongated hollow region in the protector, which can go in a circle or on the side of the tread in a straight, inclined or zigzag lines. In a circle and the side of the ongoing deepening sometimes contain common parts. "The width of the recesses is equal to the surface area of the tread occupied by deepening or land depressions, the width being considered, divided by the length of such recesses or portion of the recess; thus, the width of the recesses is the average width along its length. Recesses in the tire may have a varying depth. The depth of the recesses may vary around the circumference of the tread, or the depth of one of the development the Oia can be permanent, but different from the depth of the other grooves of the tire. If such a narrow or wide recesses are essentially reduced depth compared to the wide circular recesses, which are mutually connected, they are considered as forming an "inter-connector", designed to hold items such as ribs, are contained in the region of the tread.

"Inner side" means the side of the bus near the vehicle when the tire mounted on the wheel and the wheel is mounted on the vehicle.

"Transverse" means in the axial direction.

"Lateral edge" mean line, the tangential direction to the axis of the most remote spots of contact of the tread or contact area when measured at normal load or pumping up tires, and a line parallel to the Equatorial Central plane.

"Effective contact area" means the total area of the reference plane in contact with elements of the tread between the lateral edges around the entire circumference of the tread divided by the total area of the tread between the lateral edges.

"Non-directional tread" means a protector that does not have a preferred direction of rotation, so there is no need for placing it on the vehicle in a certain position of the wheel or is omogenia, ensuring the alignment of the tread with the preferred direction of rotation. On the contrary, directional tread pattern has a preferred direction of rotation, requiring a certain location of the wheel.

"Exterior side" means the side of the bus, the most remote from the vehicle when the tire mounted on the wheel, and the wheel is mounted on the vehicle.

"Peristaltic" means acting through wave-like contractions that propel the contained material, such as air, along the tubular passages.

"Radial" and "radially" means a radial direction towards or from the axis of rotation of the tire.

"Edge" means the continuing around the circle strip of rubber in the tread, which is formed by at least one circular recess or the second recess, or a side edge, and the strip on the side is separated by a full-sized grooves.

"Lamella" means small grooves formed in the elements of the tire tread, which divide the tread surface and improve adhesion, and the slats are in General narrow in width and are closed in the tire imprint in contrast to the grooves that remain open in the tire imprint.

"The element protector" or "coupling element" means a rib or a block of images of the config recesses, having aligned the form.

"The width of the arc of the tread" means the arc length of the tread, measured along the contour of the tire between the side edges of the tread.

Brief description of drawings

The invention will be described below by way of example and with reference to the attached drawings, on which:

figure 1 - isometric view of the bus containing the tyre tread;

figure 2 is a top view of the tire tread;

figure 3 is an enlarged isometric view of part of the protector shown in figure 1;

figure 4 is an enlarged isometric view of part of the protector shown in figure 2;

figa - enlarged view of laminirovaniya and zigzag pattern in the Central tread blocks;

figw - view cross-section through the plate along the line 5B-5B with figa;

figs - view cross-section through the zig-zag along the line 5C-5C with figa;

6 is a partial view of the area of the tread on the line 6-6 from Fig 3;

figa - view with a partial cross section of a region of the tread along the line 7A-7A with figure 4;

figw - view with a partial cross section of a region of the tread along the line 7B-7B with figure 4;

Fig is a top view of a section of the Central region of the tread;

Fig.9 is a view in partial cross-section through the Central region of the tread along the line 9-9 with Fig;

figure 10 is a view in partial cross-section through the Central region of the tread along the line 10-10 with Fig; and

11 is a view in partial cross-section through the Central region FR is ktora along the line 11-11 with Fig.

Detailed description of the invention

In figure 1, 2, 3 and 4 show the tire 10, containing a circular tread 12. The protector 12 includes a circular Central region 14 of the tread and two shoulder region 16, 18 of the tread on the opposite sides of the Central region 14. The Central Equatorial plane 20 bus divides the tread 12 into two symmetrical halves. A pair of circular recesses 22, 24 restricts the Central region 14 of the tread separating the Central region from the opposite shoulder regions 16, 18 of the protector.

In the depicted symmetric tread 12 of the Central region 14 contains a noncentral blocks 26 different geometric shapes on opposite sides of the Central plane 20, and the outer noncentral blocks 26 have reversed to deepen side 27, which borders with the corresponding circular recess 22 or 24. The Central region 14 further comprises an inner Central blocks 28 different geometric configuration, spaced, generally circular Central plane 20. Some or all of the Central blocks, including selective Central blocks 28 and noncentral blocks 26, contain numerous sinusoidal or wavy fins 30, which are pairs of spaced and parallel side across the corresponding block. The slats 30 are in General volnisto is, wave-like or sinusoidal configuration having a varying depth in the longitudinal direction, which varies from the deepest depth plots bars to the sections of the blades, which are not extended, as will be explained below. Adjacent pairs of transversely ongoing wavy slats 32, indicated to illustrate how the slats 32, 34, are connected by one or more circular ongoing grooves 36. Grooves 36 in the General linear preposterone configuration constant depth, and they continue around the circle to connect a pair of adjacent zigzag sipes in the middle position of intersection of the slats, as shown in figa.

The shoulder region 16, 18 of the protector is formed by blocks 38, containing directed axially inward side of 40, adjacent to the corresponding circular recess 22, 24 of the tread. Blocks 38 of the shoulder may, at the option of the user, contain multiple sinusoidal or wavy slats 42, 44, is identical to the slats 30 of the Central region 14. The slats 42, 44 of the shoulder are similarly paired with diversity and is oriented parallel to side across the corresponding block of the shoulder and have a varying depth in the longitudinal direction, which varies from deeply-cut section of the lamella to lamella sections of which are not extended. Adjacent wavy l is stranded 42, 44 is connected to one or more continuing around the circle grooves 46. Grooves 46 in the General linear preposterone configuration with a constant depth, and they continue around the circle to connect a pair of adjacent zigzag sipes in the middle position of intersection of the slats.

As shown in figure 4, 8, 9, 10 and 11, a circular series of spaced first V-shaped grooves located on the Central plane 20 of the tread. Each of the first V-shaped grooves contains divergent first branch 50 of the recess and the second branch 52 of the recess. Each branch 50, 52 of the recess includes an upper section 54, the middle portion 56 and an end section 58. Branch 50, 52 of the recess has a variable width and depth from the upper section 54 of the middle section 56, to the end section 58. The depth of the branches 50, 52 deepening the smallest in areas 54, 58 and the largest at the middle section 56. The width of the branches 50, 52 deepening the smallest in areas 54, 58 and the biggest in the middle part. The ends of the branches 50, 52 of the recess converge, but do not intersect in the upper area of each branch, as shown in Fig.

A circular row of spaced second, smaller, V-shaped grooves 60 continues in the Central region of the tread symmetrically to the Central plane 20. Each of the second V-image of what's recesses 60 within the series is oriented in the opposite circular direction from a number of first V-shaped grooves 48 on the Central plane 20 of the tread. Each of the second V-shaped grooves 60 contains a divergent branch deepening, continuing from the upper plot, and each recess 60 in the General semi-circular in cross section and preferably of constant depth along the groove. Figure 10 depicts the cross-section configuration of the second V-shaped grooves 60 within areas C, D, E and F, which are indicated on Fig.

Repeating circular sequence of the first V-shaped grooves, is placed on the Central plane overlaps with a number of second V-shaped grooves so that the first V-shaped recess 48 is overlapped by approximately 6 to 9 of the second V-shaped grooves 60. Fig depicts the Central region 14 of the tread into areas a to H for the purpose of illustrative purpose. Fig.9 depicts the configuration branch of the first V-shaped recess 48 within the region And the center of the tread (Fig), which represents the upper portion 54 of the branches 50, 52. Obviously, as shown, the first branch 50, 52 V-shaped recess is changing along the length of the depth, which varies from approximately 2 to 7 mm from the lowest depth D3 on the upper section 54 branches to increasing the depth D1 at the middle section 56 of the branch and back to decreasing the depth D3 at the end 58 of the branch. The shallow depth D3 in areas 54, 58 resp is tvline approximately 2 millimeters. The recess 48 is lowered at an angle β of approximately 45 degrees across the region, With Fig to the maximum depth of 7 mm at the middle section 56 of the branch grooves, represented by areas D, E on Fig. From the middle section 56, the junction depth of the recess is held at an angle (field F, G, H Fig) back to the depth D3 in 2 mm at the end 58 of the branch, as shown in figure 11.

In addition to changing the depth within the first V-shaped grooves 48, the width of the first branches 50, 52 V-shaped recesses varies between the upper section 54, a middle section 56 and an end section 58. Branch 50, 52 of each V-shaped recess 48 in the upper and lower ends is narrower, from about 1 to 3 millimeters. At the middle section 56 of the branches 50, 52 deepening width from 3 to 8 millimeters, or in General twice the minimum width at the ends. As branches 50, 52 of each of the first V-shaped recesses 48 are deep and small in width on the upper and lower ends and become smaller, but wider in the middle, holding the volume of the branches of recesses per unit length remains constant.

As shown in figure 3, 6, 7A, and 7B, off-center blocks 26 contain front of the upper edge 63 of the side 27 a series of teeth 62 in General, the right triangular configuration in cross section. Each of subco the 62 is tilted along the surface 64 at an angle of approximately 45 degrees to intersect with the surface 66. Adjacent teeth intersect at the intersection point 68. On the opposite side of the recesses 22, 24 of the shoulder lugs 38 similarly include a number of teeth 76 which are directed in the corresponding groove. The teeth 76 of the shoulder ledge is inclined at an angle α in the opposite radial direction from the teeth 62. The teeth 76 contain the inclined surface 78, which intersects with the side 80 of the tooth. Adjacent teeth 76 intersect at the intersection 82. The angle of the teeth 62, 76 approximately 45 degrees. The teeth 62, 76 approximate depth D2 from 2 to 3 mm and separated by distance W is approximately 5 millimeters. The teeth 62, 76 tilted in the radial direction, and the inclination of the teeth on one side of the grooves in the opposite radial direction compared to the other side of the recesses 22, 24. The opposite radial inclination of the teeth on opposite sides of the recess acts to increase traction on snow-covered surfaces. The number of teeth is preferably equal to the number of sides, preferably wavy lamellae in the corresponding block of the tread. The teeth preferably are also aligned with the aligned intersections 68, 82 with corresponding wavy lamellae perpendicular to each block.

Further, as shown, referring to Fig 3, 5A, 5B, 5C, 6, 7A and 7B, the adjacent wavy is Amelie at the Central and shoulder tread blocks continue in General, in the axial lateral direction and can be connected through one or more circular grooves. Grooves 36 (Central region of the tread) and 46 (shoulder blocks), in General, have a rectangular cross-section and a constant depth, as shown in figs. Wavy slats 30 (blocks the Central region of the tread) and 42, 44 (shoulder blocks) have dissected the configuration depicted in FIGU. Grooves 36, 46, oriented directly in a circle, connect adjacent axially oriented wavy slats 30, 42, 44. In the configuration of the slats includes a semicircular cut-outs or recesses 84. The recesses 84 are arranged so that the grooves 36 connects a pair of adjacent wave-like blades on opposite ends 70, 72 of the groove in popularnej area of the blades, and not in the areas with the recess 84. Thus, the groove cross slats in places where there are no recesses 84. The depth of the grooves and sipes, intersecting thus, in General, is the same as shown in figv and 5C.

Based on the foregoing it is obvious that the tire wheels of the vehicle contains a tread 12 of the tire containing a circular Central region 14 of the protector, in which the blocks (for example, 26, 28) are arranged in a symmetric pattern on opposite sides of the circular Equatorial Central plane 20 of the tire. Advantage SIM is etrice made the tire tread for the user is to simplify the problem of orientation and positioning when installing the tires on the vehicle. Symmetrically located blocks on opposite sides of the Central plane contain multiple distributed and continuing transversely undulating lamellae 30, continuing across blocks. A separate pair of adjacent blades (for example, 32, 34) are connected to one or more oriented around the circle grooves 36.

Opposite sides of the Central region 14 of the protector is limited to a circular recesses 22, 24; and deepening represent a single deepening within the corresponding half of the tire tread. In addition, the groove 36 within the tire tread restricted to the Central region 14 of the protector.

Grooves 36 and 46 always connect two adjacent and preferably parallel wavy slats.

In order not to weaken the tread or make it too soft, groove cross slats in popularnej region slats. The grooves further improve the work of the protector in providing improved lateral outflow in winter conditions and the best comfort when running in dry weather.

You must additionally be noted that, compared with the previous protector improved adhesion achieved by framing one or more krugovi the recesses of the toothed edges of the opposite blocks. Each of the opposite block is an edge block, facing the recess adjacent teeth formed along each edge of the block is inclined in the radial direction. Preferably, the teeth facing toward the deepening of the edge blocks of the Central region of the tread is inclined in a direction opposite to the inclination of the teeth facing toward the recess edge of the block on the opposite second side of the recess. Preferably, the slats are held across the block of the Central region of the tread to the row of teeth along the facing to the recess edge of the block. The number of slats preferably, although not necessarily, equal to the number of teeth along the edge of the block and aligned with the corresponding spacing between the teeth along the edge of the block. The blocks on opposite adjacent sides of the depressions contain teeth inclined in opposite directions for improved grip.

Repeating circular sequence of the first V-shaped grooves located on the Central plane, and repeating circular series of oppositely oriented second V-shaped grooves provided improved traction. The first V-shaped recesses are longitudinally varying depth, which varies from approximately 2 to 7 mm from the lower depths closer to the top of the branches to increasing the depth cf the days field branches to decreasing depth in the terminal region of the branch. The width of the first branch of the V-shaped recess further changes from the upper to the lower end and changing the depth and width of the branches of the first V-shaped recesses from the upper region to the terminal region make holding the volume branches of recesses per unit length constant.

Changes in the present invention are possible in the light provided here describe. While certain options for the implementation and the details are depicted with the aim to illustrate the subject invention, it will be obvious to experts in the art that without departing from the scope of the claims, may be made of various changes and modifications. Thus, it is obvious that there may be changes in certain embodiments of the implementation that will be described within the full scope of the claims, as defined by the attached claims.

1. Tire for wheels of vehicles, characterized in that it contains a tread having a circular Central region of the tread, containing at least a plurality of blocks arranged in a symmetrical figure with opposite sides of the circular Central Equatorial plane of the tire, with symmetrically located blocks from opposite sides of the Central pleskot who have multiple distributed around the circle and perpendicular lamellae, which pass across blocks, and oriented in a circle grooves, with each groove connects an adjacent pair of slats; adjacent pair of connected slats contains regions with varying depth.

2. The tire according to claim 1, characterized in that the opposite sides of the Central region of the tread is limited to a circular recesses.

3. The tire according to claim 2, characterized in that each circular recess, limiting the Central region of the tread, contains a single circular recess within the respective half of the tire tread.

4. The tire according to claim 3, characterized in that the grooves in the tread restricted to the Central region of the tread.

5. The tire according to claim 1, characterized in that the grooves in the tread restricted to the Central region of the tread.

6. The tire according to claim 5, characterized in that the opposite ends of each of the grooves terminate at a pair of the contiguous United slats.

7. The tire according to claim 6, characterized in that the grooves in each block pairs are not aligned in the radial direction.

8. The tire according to claim 6, wherein the contiguous United slats are at least partially wave-like configuration.

9. The tire according to claim 1, characterized in that the grooves in each block essentially linear and pairwise aligned in the radial direction.

10. The tire according to claim 1, Otley is audacia fact, that adjacent pair of connected slats is at least partially wave-like configuration.

11. Tire for wheels of vehicles, characterized in that it contains a tread having a circular Central region of the tread, containing at least a plurality of blocks arranged in a symmetrical figure with opposite sides of the circular Central Equatorial plane of the tire, with symmetrically located blocks from opposite sides of the Central plane have multiple distributed around the circle and perpendicular to the slats that run across the blocks, and oriented in a circle grooves, with each groove connects an adjacent pair of slats, each adjacent pair of the United slat includes at least one depth area and at least one Neuglobsow region, and located on a circle grooves combine a couple of connected slats at opposite ends of the grooves in popularnych areas of a pair of connected slats.

12. Tire for wheels of vehicles, characterized in that it contains a tread having a circular Central region of the tread, containing at least a plurality of blocks arranged in a symmetrical figure with opposite sides of the circular Central Equatorial plane is t tires thus symmetrically located blocks from opposite sides of the Central plane have multiple distributed around the circle and perpendicular to the slats that run across the blocks, and oriented in a circle grooves, with each groove connects an adjacent pair of slats; opposite sides of the Central region of the tread is limited to a circular recesses.

13. Tire for wheels of vehicles, characterized in that it contains a tread having a circular Central region of the tread, containing at least a plurality of blocks arranged in a symmetrical figure with opposite sides of the circular Central Equatorial plane of the tire, with symmetrically located blocks from opposite sides of the Central plane have multiple distributed around the circle and perpendicular to the slats that run across the blocks, and oriented in a circle grooves, with each groove connects an adjacent pair of slats; opposite sides of the Central region of the tread is limited to a circular recesses; and each circular recess limiting the Central region of the tread, contains a single circular recess within the respective half of the tire tread.

14. Tire for wheels of vehicles, characterized in that it contains a tread having a circular Central region of the tread, containing at least a plurality of blocks arranged in a symmetrical figure with opposite sides of the circular Central Equatorial plane of the tire, with symmetrically located blocks from opposite sides of the Central plane have multiple distributed around the circle and perpendicular to the slats that run across the blocks, and oriented in a circle grooves, with each groove connects an adjacent pair of the slats; the grooves in the tread restricted to the Central region of the tread.

15. Tire for wheels of vehicles, characterized in that it contains a tread having a circular Central region of the tread, containing at least a plurality of blocks arranged in a symmetrical figure with opposite sides of the circular Central Equatorial plane of the tire, with symmetrically located blocks from opposite sides of the Central plane have multiple distributed around the circle and perpendicular to the slats that run across the blocks, and oriented in a circle grooves, with each groove connects an adjacent pair of slats, and a groove in each block are the I, essentially, linear, and they are pairwise offset and not aligned linearly in the radial direction.



 

Same patents:

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.

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EFFECT: better braking on ice.

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Pneumatic tire // 2472632

FIELD: transport.

SUBSTANCE: invention relates to tread of tires to be used in winter. Pneumatic tire comprises splines 2 with ledges 2 on first of its two opposed walls and aligned therewith along contour of recess 3 on second wall of said spline. Besides, projection of wall spline with ledges 2 in open state features relationship between density of location of X ledges in area extending to half the depth of alpine H from open side of spline 1, and density of location of ledges Y in area extending to half the depth of alpine H from base of spline 1 is given by X>Y.

EFFECT: better braking on ice.

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SUBSTANCE: tire wearing layer 20 has outer surface T and tread pattern components 10. Minute splines 9 are made on, at least part of said components to extend from wearing layer outer surface to minute spline bottom. Two thinner parts of every functional spline 9 confine, on, at least, partial length and there along, the thicker part to make combination of parts. Every thinner part has depth ad first vertical edge adjoining thicker part and open thereto. Thicker part has top edge located at depth from minute spline bottom, and two first vertical edges adjoining aforesaid two thinner parts separated by variable distance over outer surface T with minimum and maximum magnitudes. Minimum magnitude exists nearby minute spline bottom. Besides, thicker part top edge is open toward minute spline bottom, outside wearing layer.

EFFECT: better bite on damp or icy roads.

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SUBSTANCE: invention relates to vehicle tire design intended for operation primarily in winter conditions. Roughness of tire surface (Ra 75) after tire run of 3000 km over paved road as measured according to JIS B0601 is 10 to 100 micron. Total length of slits in the area of 1 cm2 of road contact on the specified surface of tread constitutes 1.0 to 4.0 cm.

EFFECT: better riding properties of tire on wet and icy road surface with increased wear resistance.

21 cl, 5 tbl

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

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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

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FIELD: transport.

SUBSTANCE: invention relates to rodless tire tread pattern for motion on ice and snow. Tread surface has sections of contact with road cover composed of ribs divided by several main grooves, and/or multiple contact sections composed of blocks divided by grooves over tire width. Cutouts or minor openings are made on contact sections as well as multiple ledges with height smaller than depth of said cutouts. Note here that ledges are arranged to make the pattern whereby water drain channel width increases at crossing of water drain channels while water drain channels arranged in the form of mesh between ledges converge in smaller direction of the three directions. Relationship between area of multiple ledges and that of road contact surface (block-shaped) makes 0.5 or larger and 0.9 or smaller.

EFFECT: higher safety and reliability in motion on rod and ice.

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Pneumatic tire // 2466032

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Direction of tire rotation is set in pneumatic tire. Multiple narrow grooves are made in tire parts that stay in contact with soil. Each said narrow groove is shaped to, in fact, zigzag line composed of the chain of, in fact, V-like tread sections. Lowerable magnitude of tire parts that stay in contact with soil in direction of tire rotation differs from that of said parts in reverse direction, that is, against external force generated when tires lowers onto soil. Besides, direction of V-parts of every narrow section is set to make said lowerable magnitude of tire parts that stay in contact with soil in direction of tire rotation is smaller than that of said parts in reverse direction.

EFFECT: improved braking properties.

5 cl, 6 dwg, 1 tbl

Tool grip // 2085406

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

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

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 // 2477226

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to winter tire tread pattern. Proposed tire has multiple rib-like areas of contact with pavement 3 separated by multiple main grooves 2 extending in tire lengthwise direction and/or block-like areas of contact with pavement 3 separated by multiple main grooves 2 and multiple grouser grooves 4 crossing main grooves 2 on tread surface 11. Surface of contact with pavement 3 has multiple ledges 6 of, at least, two types, that feature different surface areas. Further still, at least, most ledges 6 located by smaller ledge 61 of relatively small surface area are larger ledges 6 of relatively large surface area.

EFFECT: better bite on snow and ice.

12 cl, 6 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

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