ALEXANDRIA, Va., July 30 -- United States Patent no. 12,370,878, issued on July 29, was assigned to Sumitomo Riko Co. Ltd. (Aichi, Japan).
"Fluid-filled vibration damping device" was invented by Masaaki Hirano (Aichi, Japan) and Takashi Kume (Aichi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a fluid-filled vibration damping device in which multiple fluid chambers filled with a magnetic functional fluid communicate with each other by an orifice path, and a magnetic unit applying a magnetic field to the orifice path is provided in a state of being externally fitting to an outer cylindrical member, the magnetic unit includes a magnetic field generation part forming a magnetic field and a magnetic p...