ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,512, issued on Aug. 26, was assigned to NV BEKAERT SA (Zwevegem, Belgium).
"Steel cord for rubber reinforcement" was invented by Aijun Zhang (Jiangyin, China), Haijun Ma (Jiangyin, China) and Yaodong Li (Jiangyin, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a steel cord with a construction of nx1, n is the number of the steel filaments of the steel cord, the steel cord has an elongation at 2.5N-50N of less than 1.2% and a twist pitch of greater than 16 mm, each of the steel filaments has a form of helical wave with a wave length L expressed in mm and a wave height H expressed in mm when being unravelled from said stee...