US Patent Issued to HITACHI ASTEMO on Sept. 9 for "Shock absorber" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,847, issued on Sept. 9, was assigned to HITACHI ASTEMO LTD. (Ibaraki, Japan).

"Shock absorber" was invented by Takamasa Kotani (Hitachinaka, Japan), Kentaro Yamada (Hitachinaka, Japan) and Mikio Yamashita (Hitachinaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "This shock absorber includes a first damping force generation mechanism provided in a passage of a piston, and a second damping force generation mechanism provided in a piston rod. The second damping force generation mechanism includes a valve seat member, a sub-valve provided in the valve seat member, and a cap member covering one end side of the second damping force generation me...