TH2001005259A - Steel tire reinforced strands and rubber wheels - Google Patents

Abstract

DEPCT64 steel cord reinforced strand has a 1 x 4 construction where four component wires twisted together where at least one of the four element wires is a wave element wire. Repeated type with bent and unbent sections along the longitudinal direction. where the strand reinforces the steel tire In a cross section that is perpendicular to the longitudinal direction, it has a flat shape. and where more than one cross section perpendicular to the longitudinal direction In the case where an ellipse encompassing four elemental wires is drawn, the slope of the minor axis of the ellipse is internal. A positive number or a negative number 30 degrees from the median. -------------------------------------------------- ---------

Claims (7)

DEPCT64 1. A steel cord reinforced strand with a 1 x 4 structure where the element wire Four strands are twisted together. where at least one of the four element wires is a repeating waveform element wire. with bent and unbent sections in the longitudinal direction where steel reinforced strands in cross sections perpendicular to the longitudinal direction are flat and where more than one cross section is perpendicular to the longitudinal direction. in which the oval That surrounds four elemental wires are drawn. The slope of the minor axis of the ellipse is internal. A positive number or a negative number 30 degrees from the median. 2. A strand reinforced rubber steel according to claim 1 where, when the wave-shaped element wire is placed on the plane, The height from the plane to the bend located at The far side from the plane is specified as the bending height and where the bending height is greater than or equal to 240% and less than or equal to 280% of the waveform element wire diameter. 3. Steel reinforced strands under Claim 1 or Claim 2, where in the amount more than one cross section perpendicular to the longitudinal direction in which the oval that surrounds the wire Four line elements are drawn. Mean of minor axis length/major axis length as a ratio of The minor axis length to the major axis length of the ellipse is greater than or equal to 0.76 and less than or equal to 0.82. 4. Steel reinforced strands according to claims 1 to claims 3 where the diameter of the element wire is greater than or equal to 0.25 mm and less than or equal to 0.45 mm. 5. Steel reinforced strands pursuant to claims 1 to claim 4, either where in the case of which an ellipse enclosing four elemental wires is drawn in one cross-sectional location perpendicular to the longitudinal direction The minor axis direction of the ellipse is specified as the thickness direction. where the maximum length in the thickness direction in a cross-section perpendicular to the longitudinal direction is specified as the thickness, and where the coefficient of variation in thickness is less than or equal to 0.05. 6. A rubber wheel incorporated with steel reinforced rubber strands pursuant to either of Claims 1 to Claim 5. 7. Rubber wheels according to claim 6, where the degree of rubber penetration of the rubber reinforced strands Steel greater than or equal to 70% -------------------------------------------- ---------------