Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1997-08-29
1999-01-26
Johnstone, Adrienne
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152526, 152534, 152536, 152538, B60C 918, B60C 920
Patent
active
058633626
ABSTRACT:
The tire of this invention has a belt package with a combination of a steel refinforced inner belt ply and an aromatic polyamide reinforced outer belt ply. The breaking strength, tensile modulus, secant modulus and other material properties for the reinforcing members in each belt ply are defined. The strength per unit width of the aromatic polyamide reinforced ply is made to be within zero to 30 percent greater than the strength per unit width of the steel reinforced belt ply. The tire of this invention has angles of the aromatic polyamide reinforcing members from the mid-plane greater than the angles of the steel reinforcing members from the same mid-plane by 1 to 8 degrees. High impact endurance values are disclosed to be a function of the tensile modulus, breaking strengths and belt ply widths for each ply as well as a function of the composite shear stiffness values.
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Csontos Alan A.
Johnstone Adrienne
Michelin Recherche ET Technique S.A.
Reed Robert R.
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