US Patent Issued to Kawasaki Jukogyo on Aug. 4 for "Relief valve" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,841, issued on Aug. 4, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).

"Relief valve" was invented by Yuko Funakubo (Kobe, Japan) and Hiroaki Fujiwara (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A relief valve includes a piston including a first piston member to press an urging member using a pressure of pilot oil in a pilot chamber to change an amount of deflection of the urging member. The first piston member includes a first pressure receiving surface to receive a pressure in a first axial direction of an axial direction from hydraulic oil in a first oil chamber, and a second pressure receiving surface to receive a pressure in...