Device for protecting a groove in a tread
US9440497B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 22, 2011 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Sep 27, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2011/1338
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire for a heavy goods vehicle, having a tread having a tread surface provided in the new state with at least one groove delimited by opposing side walls, this groove opening onto the tread surface in a discontinuous manner by way of a plurality of portions that are open towards the exterior of the tread, these open portions having two ends that are extended under the tread surface by channels having inlets connected to the ends of the open portions, these inlets to the channels having a mean surface area S. This tread is such that each open portion on the tread surface is provided at each of its ends with a closure device for partially closing the cross section of the inlets to the channels when the tire is running and for leaving a passage unclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.