ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,273, issued on July 22, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).
"Composite brake drum" was invented by Heewook Lee (Oakland Township, Mich.), Zhongyi Liu (Troy, Mich.), Anil K. Sachdev (Rochester Hills, Mich.), Tyson Whittier Brown (Royal Oak, Mich.) and Ratandeep Singh Kukreja (Auburn Hills, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A brake drum having a composite structure includes a cylindrical body defining an inner friction surface and an outer surface. The cylindrical body includes a drum core comprising an Al-Si alloy, the drum core including an inner surface, and an outer surface of the drum core defining th...