US 12,275,279 B2
Pneumatic tyre for a vehicle
Peter Lacko, Puchov (SK); Michal Vojtus, Puchov (SK); Spencer Shadomy, Fort Mill, MI (US); and Nico Meier, Hannover (DE)
Assigned to Continental Reifen Deutschland GmbH, Hannover (DE)
Appl. No. 18/247,064
Filed by Continental Reifen Deutschland GmbH, Hannover (DE)
PCT Filed Sep. 21, 2021, PCT No. PCT/DE2021/200124
§ 371(c)(1), (2) Date Mar. 28, 2023,
PCT Pub. No. WO2022/068998, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 10 2020 212 456.6 (DE), filed on Oct. 1, 2020.
Prior Publication US 2023/0373254 A1, Nov. 23, 2023
Int. Cl. B60C 11/12 (2006.01)
CPC B60C 11/1218 (2013.01) [B60C 11/1236 (2013.01); B60C 11/1263 (2013.01); B60C 11/1281 (2013.01); B60C 2011/1209 (2013.01); B60C 2011/1213 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pneumatic vehicle tire comprising:
a tread having a profile rib which runs in a circumferential direction;
the profile rib delimited on its opposite sides by respective circumferential grooves formed to a profile depth (T1),
the profile rib being traversed by a plurality of sipes, which extend parallel to one another and at an angle of 0° to 50° in relation to the axial direction at least in groups in plan view, and have a width (bE) of 0.4 mm to 3.0 mm,
wherein each sipe has a sipe main portion extending over the majority of its extent and has respective sipe edge portions that each lead into each circumferential groove delimiting the profile rib, wherein the sipe main portion and the sipe edge portions have respective depths (ta, tb) in a radial direction and the depth (ta) of the sipe main portion differs from the depth (tb) of the sipe edge portions;
wherein the depth (tb) of the sipe main portion is less than the depth (ta) of the sipe edge portions, wherein, in the interior of the profile rib, each of the sipe edge portions leads into a cavity that extends from the circumferential groove and is made wider than the sipe,
wherein the depth (ta) of the sipe edge portions is 200% to 400% of the depth (tb) of the sipe main portion,
wherein each sipe edge portion inside the profile rib extends over its entire extent into the cavity, and
wherein the depth (tb) of the sipe main portion is 10% to 30% of the profile depth (T1), and each cavity, viewed in cross-section of the sipe, is elongated in the radial direction and has a length (IHR) of 25% to 45% of the profile depth (T1) in the radial direction.