Radial tire for heavy load vehicles

Details Radial tire for heavy load vehicles Radial tire for heavy load vehicles

1976-07-26

1978-05-02

Reeves, Robert B.

Resilient tires and wheels

Tires, resilient

Patches

152354R, 152357R, 152362CS, 152374, B60C 900

Patent

active

040869482

ABSTRACT:
A radial tire for heavy load vehicles such as light trucks, trucks, busses, super-large type construction vehicles, etc. is disclosed. The radial tire comprises a carcass ply composed of a steel cord ply and wound around a bead core from the inside toward the outside thereof to form a turn-up portion. The upper end of the turn-up portion is upwardly extended to a position located between a point passing over the maximum width point of the carcass ply expanded by applying an internal pressure to the tire and a point where a normal drawn perpendicular from a hump to the carcass ply crosses with the carcass ply. The turn-up portion of the carcass ply is separated from the carcass ply by means of a soft rubber layer composed of rubber having a Shore A hardness which is smaller than a Shore A hardness of a coating rubber of the carcass ply and a 300% modulus of elasticity which is 50% to 85% of a 300% modulus of elasticity of the coating rubber of the carcass ply.

REFERENCES:
patent: 3085616 (1963-04-01), Smith et al.
patent: 3392773 (1968-07-01), Warren et al.
patent: 3568749 (1971-03-01), Menell et al.
patent: 3625271 (1971-12-01), Hutch
patent: 3961657 (1976-06-01), Chrobak
patent: 3964533 (1976-06-01), Arimura et al.

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