Pneumatic tire with decoupling groove
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United States of America Patent
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Issued Date -
Nov 22, 2007
app pub date -
May 18, 2006
filing date -
May 18, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A tire tread has a decoupling groove (18) with an opening angle (.alpha.) of approximately 15.degree.. Even if gravel is moved into the groove (18) by the decoupler rib (14), it will easily fall out once the tread section loses touch with the road surface and the groove (18) expands to its relaxed shape. Additionally, the ridge (24) of the decoupler rib (14) is rounded with a radius (R2) of about 2 mm. By this means, it has a much lower tendency to pick up rocks by scooping when bending toward the shoulder rib (16). A rounded bottom of the decoupling groove (18) with a radius (R1) of approximately 1.5 mm, will prevent any rocks from wedging into the bottom of the decoupling groove (18).
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