ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,529, issued on Feb. 17.
"Direct-fit vertical gas proportional valve" was invented by Xiong Chen (Songzi, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a direct-fit vertical gas proportional valve, including a valve body, a gas shut-off component and a gas proportional control component. The valve body is internally provided with first and second valve chambers. A first valve hole is provided on the first valve chamber. The gas shut-off component is fixedly connected to the first valve chamber. A gas inlet is provided on the first valve chamber and is configured to connect the valve body to a gas source. The second valve chamber is...