Pneumatic tire with tread including tread base layer and tread blocks having two different rubber layers
US8844595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2200/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a pneumatic tire 1 comprising at least one pair of parallel annular beads; at least one carcass ply 3 wrapped around said beads; a tread 5; and first and second sidewalls disposed between said tread and one of said at least one pair of beads; as well as a belt portion 7 between the carcass ply 3 and the tread 5. In accordance with the invention, the tread 5 comprises a tread base layer 8 and a plurality of tread blocks 9, wherein the tread blocks 9 comprise at least two different rubber layers 15, 17, 19 arranged radially above each other, whereas the rubber layers 15, 17, 19 of different tread blocks are axially separate from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.