Tread comprising voids for civil engineering vehicle tire
US10427471B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 16, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Jan 4, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2200/065
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The tread has a wearable thickness of material EMU and has raised elements delimited by grooves. Each solid part has a contact face and a cavity with a depth greater than 50% of the wearable thickness. Each cavity opens onto the contact face when new and is delimited by a wall surface and a bottom surface. Each wall surface deliminates a cavity that intersects the contact face along a corner edge contour that has a geometry that has a major axis which is at least 1.5 times the length of a minor axis when new. For any tread surface down to a predefined wear level, the level is at most 30% of the wearable thickness of material EMU, and the angle between the major axis and the circumferential direction is between 0 and 40 degrees. After the wear level, the angle is greater than 40 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.