ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,149, issued on Nov. 11, was assigned to OMEGA SMART HOME (JIANGSU) Co. LTD. (Taizhou, China).
"Zero-wall trifold sofa bed" was invented by Jianbo Sha (Taizhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A zero-wall trifold sofa bed includes a sofa base, where the sofa base is provided with two symmetrical folding assemblies; the folding assemblies each include a first long arm and a second long arm that are pivoted to a front side of an inner wall of an armrest box of the sofa base; the first long arm and the second long arm are jointly pivoted to a first assembly element for assembling a first sofa base; a middle part of the first long ar...