Tire for motorcycle

Details Tire for motorcycle Tire for motorcycle

2006-08-24

2009-08-25

Johnstone, Adrienne C (Department: 1791)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S546000, C152S554000

Reexamination Certificate

active

07578329

ABSTRACT:
A tire2comprises a tread4, a sidewall6, a bead8, and a carcass10. The bead8includes a core20and an apex22which extends outward in a radial direction from the core20. The apex22has an outer layer24and an inner layer26which is located to the inside of the outer layer24in the axial direction. A hardness of the outer layer24is greater than that of the inner layer26. A difference of the hardness between the outer layer24and the inner layer26is 15 or greater and 30 or less. A ratio of a thickness of the inner layer26to that of the apex22is 40% or greater and 60% or less. A ratio of a height HA in the radial direction of the apex22to a height HS in the radial direction from a bead base line to an end of the tread4is 40% or greater and 60% or less.

REFERENCES:
patent: 5429169 (1995-07-01), Igarashi et al.
patent: 0 620 131 (1994-10-01), None
patent: 6-219107 (1994-08-01), None

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