Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1997-05-28
2000-08-29
Johnstone, Adrienne
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152539, 152541, 152543, 152546, 152547, 152554, B60C 1500, B60C 1502, B60C 1504, B60C 1506
Patent
active
061093203
ABSTRACT:
A heavy duty radial tire having improved bead durability accommodated to a standard 15 degree taper center drop rim comprises a pair of bead cores disposed one in each bead portion, a steel cord radial carcass ply turned up around the bead cores from the axially inside to the outside, a hard rubber bead apex disposed between the carcass ply main portion and each turnup portion, a bead reinforcing layer of reinforcing cords disposed axially outside each carcass ply turnup portion, and a rubber strip disposed between each turnup portion and the bead reinforcing layer, the rubber strip being harder than the bead apex, and the difference B-D of the inside diameter B of the bead cores from the rim diameter D of the rim is in the range of from -4 to 1 mm.
REFERENCES:
patent: 5772811 (1998-06-01), Ueyoko et al.
Miyazaki Tatsuya
Ueyoko Kiyoshi
Johnstone Adrienne
Sumitomo Rubber Industries Ltd.
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