Radial-ply tire for trucks with tread blocks divided into two parallelogram-shaped parts
US5137068A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Apr 9, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S152/902
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The radial-ply tire for use on trucks and constructed according to the invention possesses a tread profile which comprises an equatorial line, a tread-profile width and a plurality of rows of blocks separated from one another by circumferential grooves. Each block comprises two substantially parallelogram-shaped blocks parts separated from each other by a fine cross slit substantially centrally extending through the respective block. Two of four block edges of each substantially parallelogram-shaped block part extend substantially parallel to the equatorial line of the tread profile. The other two block edges inclinedly extend relative to the equatorial line at angles which are not 90.degree., whereby all inclinedly extending block edges in a row of blocks form with the equatorial line at least substantially equal angles of inclination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.