Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1984-06-07
1985-11-19
Boland, Lois E.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152DIG16, 152548, B60C 514, B60C 100
Patent
active
045535795
ABSTRACT:
A pneumatic tire having an excellent cut resistance is disclosed, which comprises an annular crown portion constituting a tread, a pair of side portions supporting said crown portion, a pair of bead portions located at each foot of said side portions for fitting to a rim, a carcass layer composed of at least one rubberized cord ply toroidally extending between said bead portions and a liner layer disposed indise and adjacent to said carcass layer.
In the tire according to the invention, a fault surface having an extremely low adhesion which intercepts the crack growth from the outside of the tire is further arranged in said liner layer at at least a part of a region extending between said bead portions.
In the other tire according to the invention, for intercepting the crack growth from the outside of the tire, a low modulus middle rubber layer composed of rubber having a modulus lower than that of the adjoining rubber is further arranged in the tire at at least a part of a region extending between said bead portions.
The growth of the cut damage especially given to the side portions of the tire is prevented by the fault surface or the low modulus middle rubber layer.
REFERENCES:
patent: 3464477 (1969-09-01), Verdier
patent: 3709277 (1973-01-01), Montagne
patent: 4044811 (1977-08-01), Dudek et al.
patent: 4284116 (1981-08-01), Sato et al.
Matsumoto Kenji
Suzuki Yasuo
Boland Lois E.
Bridgestone Tire Company Limited
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