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US 6,565,675 B1Granted
Steel wire and method of producing the same and pneumatic tire using the same
AssigneeBridgestone Corporation
InventorKentaro Mitsui
Life of this patent
Estimating the term…
Abstract
A steel wire for the reinforcement of rubber articles has a diameter of not more than 0.40 mm, a tensile strength of not less than 4000 MPa and number of torsion of not less than 15, and produced by multi-stage wet drawing method with a die having an inner peripheral wall made from a single crystal diamond chip or a sintered diamond chip having a diamond particle size of not less than 10 μm in at least a final stage.
Claims14
A steel wire having a carbon content of 0.60 mass % to 1.1 mass %, a diameter of not more than 0.40 mm, a tensile strength of not less than 4300 MPa and number of torsion of not less than 15.
Dependencies are inferred from the claim text.