ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,408, issued on April 14, was assigned to SIEMENS SCHWEIZ AG (Zurich).
"Control valve" was invented by Fang Zhao (Beijing), Fu Lai Zhong (Tianjin, China) and Ning Zhan (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments include a control valve comprising: a valve body having a fluid inlet, a fluid outlet, and an inner cavity between them; a flow rate presetting assembly; and an indicator. The rate setting assembly includes: an adjusting rod having a first end projecting from the body and a second end extending into the cavity, and rotating around an axis; a control component disposed at a bottom side of the body and connected...