ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,324, issued on Sept. 1.
"Rebar, device and construction method for 3D-printing a concrete interlayer structure" was invented by Zhendi Wang (Beijing) and Ling Wang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application relates to the technical field of engineering construction and provides a rebar, a device and a construction method for 3D-printing a concrete interlayer structure. The rebar at least comprises: a body in the form of a chain structure, comprising a plurality of sub-parts mutually spliced, wherein the body is adapted for being sandwiched between two adjacent upper and lower cement-based slurry layers; a rotatab...