ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,740, issued on May 12, was assigned to HL MANDO Corp. (Pyeongtaek-si, South Korea).
"Frequency sensitive shock absorber" was invented by Kyudo Kim (Seoul, South Korea), Dong Won Kang (Yongin-si, South Korea) and Kwang Duk Baek (Yongin-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a frequency sensitive shock absorber, and the frequency sensitive shock absorber includes a piston rod coupled so that one side is located inside a cylinder and the other side is located outside the cylinder, a main valve coupled to the piston rod and partitioning an inner space of the cylinder into a compression chamber and...