Pneumatic vehicle tyre

Patent metadata

Field	Value
Publication number	US-10618358-B2
Application number	US-201515316175-A
Country	US
Kind code	B2
Filing date	Mar 23, 2015
Priority date	Jun 5, 2014
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

Tread profile of a pneumatic vehicle tyre—in particular for commercial vehicles—comprising a regroovable tread profile with radially raised profile elements ( 1, 2, 3, 4, 5 ) and with grooves ( 6, 7, 8, 9 ), which respectively separate two adjacent profile elements ( 1, 2, 3, 4, 5 ) from one another, wherein the grooves ( 6, 7, 8, 9 ) are bounded inwards in the radial direction R by a groove base ( 10 ) and on both sides in the axial direction by a profile element flank, forming the groove wall ( 12, 13 ), and wherein at least one regrooving indicator ( 14 ) for indicating the regrooving depth is respectively formed in one or more grooves ( 3 ), characterized in that, in at least one groove ( 8 ), all of the regrooving indicators ( 14 ) formed therein are formed in a groove wall ( 12 ) at a height H measured in the radial direction R of H>0 mm above the groove base ( 10 ), wherein the height H corresponds to the maximum radial abrasion position of the tyre for regrooving.

First claim

The invention claimed is:

1. A tread profile of a pneumatic vehicle tire, the tread profile comprising a regroovable tread profile with radially elevated profile elements, and one or more grooves which separate adjacent profile elements from one another;
wherein the one or more grooves extend inward in a radial direction R to a groove base;
wherein each of the one or more grooves are limited in an axial direction by a profile element flank which forms a groove wall;
wherein in each case at least one regrooving indicator for indicating a regrooving depth is formed in the one or more grooves and the at least one regrooving indicator indicates when regrooving is to occur;
wherein, in at least one the one or more grooves, all of the regrooving indicators formed therein are formed in the groove wall at a height H measured in the radial direction R which is greater than 0 mm above the groove base; and,
wherein the height H corresponds to a maximum radial wear position of the tire for regrooving;
wherein each of the at least one regrooving indicator is an elevation, and wherein the elevation is a linear elevation extending along the groove wall.

2. The tread profile as claimed in claim 1 , wherein the groove wall of the at least one or more grooves comprises two or more elevations arranged one behind the other, wherein the two or more elevations are distributed over the circumference of the tire on the profile element flanks that form the groove wall, wherein the two or more elevations are formed at a distance H measured in the radial direction R which is greater than 0 mm above the groove base, and wherein the two or more elevations form the at least one regrooving indicator.

3. The tread profile as claimed in claim 1 , wherein 1.5 mm≤H≤8 mm above the groove base.

4. The tread profile as claimed in claim 1 , wherein each of the at least one regrooving indicator is an elevation formed with a maximum elevation C, measured perpendicular to the groove wall, of 0.2 mm≤C≤3 mm and with a maximum extent width B, measured along the radial extent of the elevation in the groove wall proceeding from the distance H from the groove base of 0.2 mm≤B≤3 mm.

5. The tread profile as claimed in claim 1 , wherein each of the at least one regrooving indicator is an elevation, wherein the elevation is a rib-like elevation oriented in a circumferential direction U of the tire, and wherein the rib-like elevation has a rib width B measured in the groove wall along the radial extent thereof and a rib height C measured perpendicular to the rib wall.

6. The tread profile as claimed in claim 5 , wherein the rib-like elevation is a rib extending over the entire circumference of the tire, thus forming a regrooving indicator extending over the entire of the tire.

7. The tread profile as claimed in claim 5 , wherein the rib-like elevation is a plurality of ribs which extends in the circumferential direction U and which has the maximum extent length L, measured in the circumferential direction in the groove wall, of L≥2 mm;
wherein over the circumference of the tire in the groove wall, at a distance H from the groove base, a the plurality of ribs are formed so as to be distributed one behind the other and arranged spaced apart from one another;
wherein the plurality of ribs form in each case one regrooving indicator; and,
wherein the distance a, measured in the groove wall between two of the plurality of ribs, is 2 mm≤a≤25 mm.

8. The tread profile as claimed in claim 1 , wherein each of the at least one regrooving indicator is an elevation, and wherein the elevation is, at its elevation base in the groove wall, formed with an intersection contour which is oval, elliptical or triangular.

9. The tread profile as claimed in claim 1 , wherein the elevation is a linear elevation extending over the entire circumference of the tire.

10. The tread profile as claimed in claim 1 , wherein the linear elevation is formed so as to extend in the manner of a circular line concentrically with respect to the tire axis.

11. The tread profile as claimed in claim 1 , wherein the linear elevation is formed so as to extend in undulating or meandering fashion along a circular line formed concentrically with respect to the tire axis.

12. The tread profile as claimed in claim 1 , wherein the linear elevation forms a V shape along its linear extent, wherein the tip of the V shape points inward in the radial direction R of the tire, and wherein, over the circumference of the tire.

13. The tread profile as claimed in claim 12 , wherein the linear elevation is one a plurality of linear elevations distributed and arranged one behind the other.

14. The tread profile as claimed in claim 1 , wherein the pneumatic vehicle tire is a utility vehicle tire.

15. The tread profile as claimed in claim 1 , wherein the at least on regrooving indicator provides a first indication that the groove should be regrooved and a second indication that the groove needs to be regrooved.

16. A pneumatic vehicle tire defining a regroovable tread profile, the regroovable tread profile comprising radially elevated profile elements, and one or more grooves which separate adjacent profile elements from one another;
wherein the one or more grooves extend inward in a radial direction R to a groove base;
wherein each of the one or more grooves are limited in an axial direction by a profile element flank which forms a groove wall;
wherein in each case at least one elevation for indicating a regrooving depth is formed in the one or more grooves;
wherein, in at least one the one or more grooves, all of the elevations formed therein are formed in the groove wall; and,
wherein the elevation corresponds to a maximum radial wear position of the tire for regrooving.

17. The pneumatic vehicle tire as claimed in claim 16 , wherein the elevation is a rib-like elevation oriented in a circumferential direction U of the tire, and wherein the rib-like elevation has a rib width B measured in the groove wall along the radial extent thereof and a rib height C measured perpendicular to the rib wall.

18. The pneumatic vehicle tire as claimed in claim 17 , wherein the rib-like elevation is a rib extending over the entire circumference of the tire, thus forming a regrooving indicator extending over the entire of the tire.

19. A pneumatic vehicle tire defining a regroovable tread profile, the regroovable tread profile comprising radially elevated profile elements, and one or more grooves which separate adjacent profile elements from one another;
wherein the one or more grooves extend inward in a radial direction R to a groove base;
wherein each of the one or more grooves are limited in an axial direction by a profile element flank which forms a groove wall;
wherein in each case at least one elevation is formed in the one or more grooves;
wherein in at least one the one or more grooves, all of the elevations formed therein are formed in the groove wall; and,
wherein, in at least one the one or more grooves, all of the elevations formed therein are formed in the groove wall at a height H, measured in the radial direction R, which is 1.5 mm≤H≤8 mm above the groove base.

Assignees

• Continental Reifen Deutschland Gmbh

Inventors

• Lutz Andre
• Kristen Florian

Classifications

• B60C11/042

  further characterised by the groove cross-section · CPC title

• B60C11/1307

  with special features of the groove walls · CPC title

• B60C11/24 Primary

  Wear-indicating arrangements · CPC title

• B60C2011/1338

  comprising protrusions · CPC title

• B60C11/0083

  characterised by the curvature of the tyre tread · CPC title