Heavy duty tire

Details Heavy duty tire Heavy duty tire

2005-04-19

2005-04-19

Johnstone, Adrienne C. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S538000

Reexamination Certificate

active

06880599

ABSTRACT:
When a tread thickness from a second belt ply7B is defined as T, Tmin is provided in a region Y which is away from a tire equator C by a distance of 0.5 to 0.7 times of a tread grounding half width WT/2. A ratio Tmin/Tc between said minimum value Tmin and the tread thickness Tc at the position of the tire equator C is 0.92 to 0.97, and a ratio Tb/Tc between a tread thickness Tb at a position of an outer end of the second belt ply and Tc is 0.95 to 1.10. When a tread thickness from a carcass6is defined as K, Kmin is provided in region Y. A ratio Kmin/Kc is 0.97 to 0.998, and a ratio Kb/Kc is 1.2 to 1.5.

REFERENCES:
patent: 5131446 (1992-07-01), Fukumoto et al.
patent: 5647925 (1997-07-01), Sumiya et al.
patent: 318128 (1989-05-01), None
patent: 05-077608 (1993-03-01), None
patent: 7-164823 (1995-06-01), None
patent: 08-002210 (1996-01-01), None

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