Pneumatic tire with decoupling groove
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United States of America Patent
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Issued Date -
Mar 12, 2009
app pub date -
Sep 11, 2007
filing date -
Sep 11, 2007
priority date (Note) -
Abandoned
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Abstract
A tire tread has a decoupling groove (32) with walls (20, 22) that have a wavy shape in the radial direction with respect to the tire geometry, i.e. at least one axial deviation (26, 28) along the depth of the decoupling groove (18). An axial cut through the tire tread (10) divulges a wavy course of the decoupling groove (18), where the two walls (20, 22) have contours that complement each other. During a road contact of a respective tread section, the decoupling groove (18) closes, and a radially interlocking connection between the shoulder rib (12) and the decoupler rib (14) is made. Under load, the decoupler rib (14) functions like a part of the tread (10), thus protecting the shoulder rib (12) from erosion wear.
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