ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,919, issued on Nov. 18, was assigned to Hitachi Astemo Ueda Ltd. (Nagano, Japan).
"Check valve and brake system" was invented by Tetsuo Kobori (Ueda, Japan), Motoyasu Nakamura (Ueda, Japan) and Yoshiteru Matsunaga (Ueda, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A check valve is arranged in a flow path through which hydraulic fluid flows. The check valve includes: a cap fixed in the flow path; a plug seated on a seat surface provided in the flow path; a first extension provided in the cap and extending from the cap toward the plug; a second extension provided in the plug, extending from the plug toward the cap, and guided by the first ext...