Pneumatic tire

Details Pneumatic tire Pneumatic tire

1985-05-23

1988-03-22

Czaja, Donald E.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

57902, 148 12B, 152527, B60C 918

Patent

active

047321970

ABSTRACT:
A pneumatic tire at least partially reinforced with steel cords. Most of steel filaments of said steel cords comprise iron materials having carbon content of 0.75 to 0.85 percent by weight. Said steel cords have an preferred tensile strength (TS) calculated from the following formula; ##EQU1## wherein W is the weight (g/m) of a steel cord, D is the diameter (mm) of the steel filament and N is the number of steel filaments of a steel cord and said steel cords also have a maintenance ratio of the knot strength of more than 60%.

REFERENCES:
patent: 3990887 (1976-11-01), Hisada
patent: 4011899 (1977-03-01), Chamberlin
patent: 4020887 (1977-05-01), Vlasov et al.
patent: 4106957 (1978-08-01), Tournoy
patent: 4176513 (1979-12-01), Young et al.
patent: 4268573 (1981-05-01), Baillievier
Metals Handbook, 9th Ed., vol. 1: "Properties and Selection: Irons and Steels", ASM 1978.
Blow, C. M., Rubber Technology and Manufacture, CRC Press, 1971, p. 400 and p. 220.
Haemers, G. "Steel Cord-Rubber Adhesion: State of the Art", Rubber World, Sep. 1980, pp. 26-30.
Japanese Industrial Standard, Piano Wire Rods, Japanese Standards Assoc., JIS G 3502, Table 1, 1980.

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