ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,867, issued on March 25, was assigned to NV Bekaert SA (Zwevegem, Belgium).
"Steel cord for rubber reinforcement" was invented by Aijun Zhang (Jiangyin, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A steel cord for rubber reinforcement that has a construction with an outer layer and an inner strand surrounded by and adjacent to the outer layer, the inner strand having at least one steel filament with a number of N1 and an average diameter of d1 expressed in mm, the outer layer having steel filaments with a number of N2 and an average diameter of d2 expressed in mm. The inner strand has a torque T1 and the outer layer has a torque T2, the re...