Radial-ply tire for trucks with tread blocks divided into two parallelogram-shaped parts
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United States of America Patent
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-
Aug 11, 1992
Grant Date -
N/A
app pub date -
Apr 9, 1990
filing date -
Apr 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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