US Patent Issued to HITACHI ASTEMO on May 5 for "Shock absorber" (Michigan Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,449, issued on May 5, was assigned to HITACHI ASTEMO LTD. (Ibaraki, Japan).

"Shock absorber" was invented by Markus Steeb (Plymouth, Mich.), Shivanand Sankaran (Canton, Mich.) and Andrew Feldkamp (Dexter, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This shock absorber includes a cylinder having an inner chamber; a cage body partitioning the inner chamber into first and second chambers, and includes a first passage allowing communication between the first and second chambers, a first seat part, a second passage allowing communication between the first and second chambers, and a second seat part. A first valve which is a first valve coming into...