ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,865, issued on Nov. 4, was assigned to Helix Steel LLC (Ann Arbor, Mich.).
"Twisted reinforcement fibers and method of making" was invented by Luke Pinkerton (Ann Arbor, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A composite material used to form a concrete structure that includes a concrete matrix formed of a mixture of aggregates and a paste and a mixture of twisted steel micro-reinforcements (TSMRs) dispersed within the concrete matrix. The TSMRs have a variable twist pitch; wherein the twist pitch of a portion of the TSMRs is in the range of 6 to 20 twists per 25.4 mm (1 inch) applied along its longitudinal axis. The TSMRs are made from...