US Patent Issued to Prospira on Dec. 2 for "Anti-vibration device" (Japanese Inventor)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,882, issued on Dec. 2, was assigned to Prospira Corp. (Kawasaki, Japan).

"Anti-vibration device" was invented by Hiroshi Kojima (Kawasaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A partition member includes a first orifice passage extending from a main liquid chamber to the side of a sub-liquid chamber, and a second orifice passage extending from the sub-liquid chamber to the side of the main liquid chamber and connected to the first orifice passage. The first orifice passage extends from the main liquid chamber to one side in a circumferential direction. The second orifice passage extends from a connection portion with the first orifice...