ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,732, issued on May 20, was assigned to HITACHI ASTEMO LTD. (Ibaraki, Japan).
"Shock absorber" was invented by Milton Muzvidziwa (Hitachinaka, Japan), Koichi Yamaka (Hitachinaka, Japan) and Yohei Katayama (Hitachinaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piston bolt is formed by divided first and second members, and a first small-diameter portion and a large diameter portion of a common passage are formed in the first member and a second small-diameter portion of the common passage is formed in the second member. This configuration allows the common passage to be processed using a general-purpose method and tool and contributes to ...