Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1994-09-20
1997-09-02
Johnstone, Adrienne C.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152526, 152534, 152536, 152537, 152538, B60C 918, B60C 920
Patent
active
056627513
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 strength per unit width of the aromatic polyamide reinforced ply is made to be within 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 difference in bending stiffness values for each ply as well as a function of the composite shear stiffness values.
REFERENCES:
patent: 3851693 (1974-12-01), Takemura et al.
patent: 3949797 (1976-04-01), Mirtain et al.
patent: 4184529 (1980-01-01), Boileau
patent: 4184530 (1980-01-01), Boileau
patent: 4407347 (1983-10-01), Mirtain
patent: 4854360 (1989-08-01), Nagumo et al.
patent: 4913208 (1990-04-01), Anderson et al.
patent: 4936366 (1990-06-01), Monnot et al.
Johnstone Adrienne C.
Michelin Recherche ET Technique S.A.
Reed Robert R.
Warnock Russell W.
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