Tyre crown for heavy goods vehicle of the civil engineering type
A technology for heavy-duty vehicles and tires, used in heavy-duty tires, tire treads/tread patterns, vehicle components, etc., to solve problems such as attacks
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[0070] figure 1 Shows a meridian half-section of the crown of a tire 1 for a construction site type heavy vehicle comprising a tread 2 and a crown reinforcement 3 located radially inside the tread 2 , in the plane YZ. have a radial thickness H at least equal to 60 mm T The tread 2 consists of a width W D and radial depth H D The incision 21 and the relief element 22 separated by the incision 21. The width W of the notch 21 D At most equal to the radial depth H D 20% of the radial depth H D at least equal to the radial thickness H T 50% of , which is called the effective incision, and has a cumulative length L measured on the radially outer surface 23 of the tread 2 D (not shown in the figure). Tread 2 has m / m 2 Denoted surface notching TL, which is equal to the cumulative length L of the effective notch 21 D and the radially outer surface 23 of the tread is equal to 2ΠR E *W T The ratio between the area A, where R E is the outer radius of the tyre, measured in the...
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