Tire with no ply steer belt
AssigneeThe B. F. Goodrich Company
InventorMarion G. Pottinger
Life of this patent
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Abstract
A radial ply pneumatic tire has a belt assembly which is constructed so that the laminated layers of rubberized parallel cord material in the belt are arranged in such a way that the lamina stiffnesses of the belt plies are symmetrically arranged with regard to the thickness midplane of the belt.
Claims4
In a radial ply tire having a belt assembly with an odd number of plies of rubberized mutually parallel cords crossing the circumferential midplane of the tire at an acute angle, the improvement wherein the cords in each of the radially innermost and radially outermost plies of the belt assembly are oriented in the same direction relative to said circumferential midplane while the ply or plies intermediate the radially innermost and radially outermost plies are each characterized by a cord direction and stiffness which effects symmetrical stiffness relative to the thickness midplane of the belt.
Dependencies are inferred from the claim text.