Pneumatic tyre

FIELD: automotive industry.

SUBSTANCE: invention relates to the automotive industry. Pneumatic tyre includes main grooves (20) located in shoulder of tyre tread sections (1) and passing in direction along circumference of the tyre; plurality of ground loosening grooves (41) extending outwardly in the transverse direction of the tire from main grooves (20) and reaching the side portions; and plurality of blocks (42) separated by main grooves (20) and ground loosening grooves (41). Raised portion (50) protruding from blocks (42) is provided on the end portion from the outside in the transverse direction of the tire from blocks (42); protruding portion (50) extending in the circumferential direction of the tire so that it protrudes into grooving grooves (41) located on both sides of raised portion (50).

EFFECT: improved running characteristics of muddy or sandy soils, snow-covered roads.

7 cl, 4 dwg, 2 tbl

 



 

Same patents:

FIELD: transport.

SUBSTANCE: machine for production of tire comprises multiple forming wheels suspended above carrier in machine direction. Every forming wheel has multiple recesses to receive preset sections along the tread at tread displacement along every forming wheel. Said recessed have preset depth and shape. Note here that said preset depth increases between forming wheels in machine direction.

EFFECT: better uniformity of the tread adding to tire wear resistance.

7 cl, 1 tbl, 10 dwg

Tire (versions) // 2529925

FIELD: transport.

SUBSTANCE: invention relates to pneumatic tire tread design, predominantly for agricultural vehicles. Tire includes carcass and tread running along circumference of tire carcass, where the mentioned tread contains multiple tread elements located in tread pattern. Tread elements in the mentioned array of tread elements are located with one of two pitches having different lengths and in noise-reducing sequence of pitches.

EFFECT: reduced noise.

36 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to car tires suitable for sportsters. Tire comprises tread divided by tire mid surface into first semi-tread (41) extending axially from mid surface to tread first edge (45). Note here that first semi-tread includes the primary circumferential groove (141) opening to rolling surfaces. Besides, tire includes semi-tread (42) extending axially from mid surface to tread second edge (46). Additionally, tire includes extra stiffener (151) composed of multiple radially-oriented thread-like reinforcing elements. Note here that said extra stiffener is located in radial direction from carcass reinforcing element inner side and levelled directly in radial direction relative to the primary circumferential groove.

EFFECT: more uniform wear, longer life, higher stiffness of tire crown zone.

9 cl, 18 dwg

Pneumatic tire // 2513210

FIELD: transport.

SUBSTANCE: invention relates to tread pattern of tire designed to be used on dry road, ice- and snow-covered roads. Proposed tire comprises unidirectional tread pattern including right and left lengthwise grooves of the crown and crow rib arranged there between. Crown rib has first and second V-like grooves arranged by turns in the tire lengthwise direction. First V-like grooves extend from the left lengthwise groove of the crown. Second V-like grooves extend from the right lengthwise groove of the crown. First and second V-like grooves terminate nearby the rib while their V-like configurations have inflections located, in fact, at tire equator.

EFFECT: stable motion on dry road, ice- and snow-covered roads.

9 cl, 10 dwg, 1 tbl

Pneumatic tire // 2506170

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern of stud-free tire. Proposed tire comprises sets of blocks G composed of polygonal blocks 10 arranged tightly in crown zone 1. Polygonal blocks 10 are confined by grooves 9 including first grooves 9a of W9a width and arranged between polygonal blocks 10 adjoining in tore circular direction. Width W9a of first grooves 9a is larger than width W9b of second grooves 9b located between polygonal blocks 10, adjoining and staggered.

EFFECT: better flotation on ice and snow.

7 cl, 7 dwg, 4 tbl

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

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

Auto tire // 2531534

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Tire 1 comprises: circular groove 12 made in crown zone, tread runner 22 divided by said groove 12 and crosswise grooves made at tread runner. Crosswise grooves comprises first crosswise groove 32 dividing the tread runner into several blocks and second crosswise groove 51 dividing the block 42 separated by first crosswise groove into block first and second parts 61, 62. Circular groove part depth in contact with second block is smaller than that of circular groove in contact with first block.

EFFECT: higher stiffness, better tread drainage.

5 cl, 5 dwg, 1 tbl

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

Pneumatic tire // 2436685

FIELD: transport.

SUBSTANCE: invention relates to automotive tire to be used on ice- or snow-covered roads. Proposed tire comprises tread 2 including ring shoulder grooves 6c running nearby edges E of contact with soil, and transverse shoulder grooves 7d arranged between said groove 6c and said edge E. Said tire shoulder features such shape that protector outer surface 2a and tire side surface 14 located radially inward and axially outward from aforesaid edge E intersect to form an edge or and angle wherein each shoulder block B4 is furnished with lengthwise lamella 11 in zone running axially inward from said edge E for 2 mm or more, and for 10 mm or less. Tire side surface 14 is furnished with recess 15 located in lengthwise direction in at least a part of raised region produced by the ledge of lengthwise lamella 11 on said surface 14, while radially recessed edge of recess 15 is located in radial position corresponding to zone making 505 to 100% of the depth of lengthwise lamella 11.

EFFECT: preventing wobble, reduced wear.

5 cl, 7 dwg

Pneumatic tire // 2388617

FIELD: transport.

SUBSTANCE: proposed invention relates to automotive industry. Central groove (14) directed along circumference is arranged on equator (CL) of tread (12). Note here that first transverse grooves (20) are arranged on both sides of aforesaid central groove that are formed with smaller angle with respect to tire axial direction compared with first transverse groove (20).One end of every first transverse groove (20) and one end of every second transverse groove (22) are connected with shoulder zone groove (18) directed along circumference, while shoulder zone transverse grooves (23) are arranged on outer side of every shoulder zone groove (18) directed along circumference. Every shoulder zone transverse groove (23) runs from jointing part towards tread edge (12E) and is formed at smaller angle to tire axial direction than that of first transverse groove (20).

EFFECT: higher adhesion of tire.

7 cl, 6 dwg

FIELD: transport.

SUBSTANCE: car control device comprise steering wheel (3) coupled with first element (4) that supports second element (13) to drive gears (16) running on axles (17, 18) to transfer motion to turn controlled front wheel (7). Second element (13) is coupled with LH and RG gears (16) running on LH and RD axles (17, 18). One ends of the latter are bent off at 90° with respect to axles and have sliding contact with first element (4). Other ends of axles (17, 18) are coupled with casings (19, 20) furnished with rolling bearings (21, 22) fitted on axle (23) supporting controlled front drive wheel. Tire of aforesaid wheel can have spherical central part (11), while its edges can have support triangular ledges (12) to provide for car stability in turning to the right or left. Proposed device can be used in three-wheeled car with one controlled front wheel (7), two rear driven wheels and streamline body.

EFFECT: higher maneuverability and stability on turns.

2 cl, 3 dwg

The invention relates to the design of tyres for road transport, mainly buses heavy trucks

FIELD: transport.

SUBSTANCE: car control device comprise steering wheel (3) coupled with first element (4) that supports second element (13) to drive gears (16) running on axles (17, 18) to transfer motion to turn controlled front wheel (7). Second element (13) is coupled with LH and RG gears (16) running on LH and RD axles (17, 18). One ends of the latter are bent off at 90° with respect to axles and have sliding contact with first element (4). Other ends of axles (17, 18) are coupled with casings (19, 20) furnished with rolling bearings (21, 22) fitted on axle (23) supporting controlled front drive wheel. Tire of aforesaid wheel can have spherical central part (11), while its edges can have support triangular ledges (12) to provide for car stability in turning to the right or left. Proposed device can be used in three-wheeled car with one controlled front wheel (7), two rear driven wheels and streamline body.

EFFECT: higher maneuverability and stability on turns.

2 cl, 3 dwg

Pneumatic tire // 2388617

FIELD: transport.

SUBSTANCE: proposed invention relates to automotive industry. Central groove (14) directed along circumference is arranged on equator (CL) of tread (12). Note here that first transverse grooves (20) are arranged on both sides of aforesaid central groove that are formed with smaller angle with respect to tire axial direction compared with first transverse groove (20).One end of every first transverse groove (20) and one end of every second transverse groove (22) are connected with shoulder zone groove (18) directed along circumference, while shoulder zone transverse grooves (23) are arranged on outer side of every shoulder zone groove (18) directed along circumference. Every shoulder zone transverse groove (23) runs from jointing part towards tread edge (12E) and is formed at smaller angle to tire axial direction than that of first transverse groove (20).

EFFECT: higher adhesion of tire.

7 cl, 6 dwg

Pneumatic tire // 2436685

FIELD: transport.

SUBSTANCE: invention relates to automotive tire to be used on ice- or snow-covered roads. Proposed tire comprises tread 2 including ring shoulder grooves 6c running nearby edges E of contact with soil, and transverse shoulder grooves 7d arranged between said groove 6c and said edge E. Said tire shoulder features such shape that protector outer surface 2a and tire side surface 14 located radially inward and axially outward from aforesaid edge E intersect to form an edge or and angle wherein each shoulder block B4 is furnished with lengthwise lamella 11 in zone running axially inward from said edge E for 2 mm or more, and for 10 mm or less. Tire side surface 14 is furnished with recess 15 located in lengthwise direction in at least a part of raised region produced by the ledge of lengthwise lamella 11 on said surface 14, while radially recessed edge of recess 15 is located in radial position corresponding to zone making 505 to 100% of the depth of lengthwise lamella 11.

EFFECT: preventing wobble, reduced wear.

5 cl, 7 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

Auto tire // 2531534

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Tire 1 comprises: circular groove 12 made in crown zone, tread runner 22 divided by said groove 12 and crosswise grooves made at tread runner. Crosswise grooves comprises first crosswise groove 32 dividing the tread runner into several blocks and second crosswise groove 51 dividing the block 42 separated by first crosswise groove into block first and second parts 61, 62. Circular groove part depth in contact with second block is smaller than that of circular groove in contact with first block.

EFFECT: higher stiffness, better tread drainage.

5 cl, 5 dwg, 1 tbl

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