EP 4232303 A1 20230830 - HEAVY-DUTY VEHICLE TYRE TREAD WITH IMPROVED ROBUSTNESS
Title (en)
HEAVY-DUTY VEHICLE TYRE TREAD WITH IMPROVED ROBUSTNESS
Title (de)
SCHWERLASTFAHRZEUGREIFENLAUFFLÄCHE MIT VERBESSERTER ROBUSTHEIT
Title (fr)
BANDE DE ROULEMENT DE PNEUMATIQUE POUR VÉHICULE POIDS LOURD À ROBUSTESSE AMÉLIORÉE
Publication
Application
Priority
- FR 2010963 A 20201026
- FR 2021051853 W 20211022
Abstract (en)
[origin: WO2022090651A1] The invention relates to a heavy-duty vehicle tyre tread and aims to improve the tear resistance of oblique incisions emerging in its external cavities. The tread (1) comprises at least one substantially longitudinal cutout (3) comprising at least one external cavity (6) that is open on the tread surface (2) along an emerging section (7) having a closed contour (8). Each external cavity (6) is connected to two substantially longitudinal incisions (91) and to at least one oblique incision (92) having an average trace (M2) intersecting the contour (8) at a connection point (I). According to the invention, the average trace (M2) of each oblique incision (92) forms an angle (A1, A2) strictly greater than 90°, with at least two straight lines (T1, T2), tangential to the contour (8) respectively at two points (I1, I2) of the contour (8) positioned on either side of the average trace (M2) and at a curvilinear distance (d1, d2) from the connection point (I) of at most 2 mm.
IPC 8 full level
B60C 11/03 (2006.01); B60C 11/12 (2006.01)
CPC (source: EP US)
B60C 11/0306 (2013.01 - EP); B60C 11/0309 (2013.01 - EP); B60C 11/032 (2013.01 - EP); B60C 11/0323 (2013.01 - EP US); B60C 11/1236 (2013.01 - EP US); B60C 11/1259 (2013.01 - EP US); B60C 2011/0341 (2013.01 - EP); B60C 2011/1245 (2013.01 - US); B60C 2200/06 (2013.01 - EP US)
Citation (search report)
See references of WO 2022090651A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
FR 3115497 A1 20220429; BR 112023006140 A2 20230509; CN 116490384 A 20230725; EP 4232303 A1 20230830; US 2023398815 A1 20231214; WO 2022090651 A1 20220505
DOCDB simple family (application)
FR 2010963 A 20201026; BR 112023006140 A 20211022; CN 202180071938 A 20211022; EP 21810402 A 20211022; FR 2021051853 W 20211022; US 202118033751 A 20211022