US Patent Issued to ArvinMeritor Technology on June 17 for "Method of making an interaxle differential unit and an annular case" (Michigan Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,820, issued on June 17, was assigned to ArvinMeritor Technology LLC (Troy, Mich.).

"Method of making an interaxle differential unit and an annular case" was invented by Joseph Melekian (Troy, Mich.), Bin Hu (Troy, Mich.) and Nagaraja Gargeshwari (Troy, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of making an interaxle differential unit. The method may include piercing a workpiece and then ring roll forging the workpiece to form an annular case that is a seamless ring. The annular case may be heat treated before installing an interaxle differential unit gear nest inside the annular case."

The patent was filed on March 9, 2021, unde...