ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,729, issued on Sept. 8.
"Light metal structure-function dual-gradient composite brake disc (brake drum)" was invented by Ming Fang (Hebei, China) and Shu Fang (Hebei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a light metal structure-function dual-gradient composite brake disc or brake drum. The light metal structure-function dual-gradient composite brake disc or brake drum is made of a light metal/graded ceramic skeleton composite friction layer bearing friction and wear functions and having function (performance) gradient characteristics and a light metal bearing connection and structure functions and havi...