Pneumatic radial tire for heavy load vehicles including improved

Details Pneumatic radial tire for heavy load vehicles including improved Pneumatic radial tire for heavy load vehicles including improved

1980-01-15

1981-09-15

Kittle, John E.

Resilient tires and wheels

Tires, resilient

Patches

152362R, 152362CS, B60C 1506

Patent

active

042891841

ABSTRACT:
A pneumatic radial tire for heavy load vehicles including an improved bead portion reinforcing construction constructed such that the cords of a reinforcing layer along the outside of a carcass ply are inclined on a circle formed by the upper end of a turn-up region of the carcass ply at an angle of 50.degree. to 70.degree. with respect to the radial plane of the tire and have an air gap ratio .delta. of 38% to 60% measured at a region where the cords of the reinforcing layer cross with a line tangent to a curved surface of a rim flange and extending in parallel with the rotary axis of the tire and given by the following formula ##EQU1## where b is a distance between two midlines of two adjacent cords, measured perpendicular to the cords, and c is a cord diameter.

REFERENCES:
patent: 3921693 (1975-11-01), Suzuki et al.
patent: 3982580 (1976-09-01), Inoue et al.
patent: 4046183 (1977-09-01), Takahashi et al.
patent: 4185677 (1980-01-01), Motomura
patent: 4209050 (1980-06-01), Yoshida et al.
patent: 4214620 (1980-07-01), Mezzanotte

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