Pneumatic tire with decoupling groove
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United States of America Patent
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Issued Date -
Jun 19, 2008
app pub date -
Dec 15, 2006
filing date -
Dec 15, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a tire tread with a decoupling groove (38), the edge (36) of the tread rib (32) adjoining the decoupling groove (38) has a wavy contour. The wavy edge (36) provides protection from step-off wear because erosion at one location is confined to the affected wave. The adjacent edge (44) of the decoupler rib (34) may have a complementary wavy contour. In the area of the contact patch, where the vehicle load on the tire deforms the tread, these two edges (36,44) will interlock with each other, thus protecting the outer edge (36) of the tread rib. Instead, the outer edge of the decoupler rib (34) will be subjected to erosion wear. Toward the bottom of the decoupling groove (38), the wavy contour of the edges (36,44) may taper off. The bottom of the decoupling groove (38) can be arranged in a straight circumferential line.
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