Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1988-10-06
1990-04-17
Zimmerman, John J.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152556, B60C 900
Patent
active
049171658
ABSTRACT:
A steel cord for the reinforcement of rubber articles is disclosed, which comprises a central base structure composed of 1 to 4 steel filaments, and at least one coaxial layer composed of plural steel filaments arranged around the central base structure so as to adjoin them to each other, these steel filaments being twisted in the same direction at the same pitch. In the steel cord of this type, the steel filaments constituting the central base structure have the same diameter (dc), while at least one steel filament of the coaxial layer has a diameter (dso) smaller than the diameter (dc) of the steel filament in the central base structure.
REFERENCES:
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patent: 3318082 (1967-05-01), Riggs
patent: 3413749 (1968-12-01), Lejeune
patent: 3538702 (1970-11-01), Wolf et al.
patent: 4349063 (1982-09-01), Kikuchi
patent: 4608817 (1986-09-01), Brandyberry et al.
patent: 4628683 (1986-12-01), Bourgois
Bridgestone Corporation
Zimmerman John J.
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