ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,778,309, issued on Nov. 3, was assigned to GELLI PLAST S.R.L. (Monteriggioni, Italy).
"Active suspension" was invented by Giuseppe Di Mario (Tredozio, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described is an improved active suspension to give an additional spring to an overlying mattress, including an elastic element including a central body, a plurality of flexible arms extending in a cantilever fashion from the central body and a raised perimeter portion connected to the flexible arms and supported elastically by them, a member for supporting the elastic element, designed to be mounted on a slat."
The patent was filed on March 31, 2023, un...