Tread for tire of a drive axle of a heavy goods vehicle and tire
US9616715B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 19, 2013 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Apr 6, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2200/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Tread for a tire for the driven axle of a heavy goods vehicle, comprising a plurality of circumferential grooves delimiting at least three ribs each having a height and a width measured in the axial direction, axially delimited by two edge rows, each rib having a plurality of sipes able to close at least in part as they enter the contact patch, and opening onto each lateral face of the rib to form two edge corners and having a depth at least equal to 50% of the height of the rib, these sipes in pairs delimiting an elementary rib volume and an elementary contact surface, wherein each elementary volume delimited by two sipes of one and the same rib has a void volume opening on the contact face in the new state, having a total area on the tread surface at least equal to 0.4% and at most equal to 1.5% of the area of the elementary contact surface, having a depth at least equal to half the depth of the grooves, and determined such that it remains open as it passes through the contact patch so as to allow any liquid present on the road surface to be picked up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.