US Patent Issued to GM GLOBAL TECHNOLOGY OPERATIONS on July 1 for "Laser hardening of cylinder bore" (Michigan Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,907, issued on July 1, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Laser hardening of cylinder bore" was invented by Garrold A. DeGrace (Frankenmuth, Mich.), Sheri K. Kurgin (Macomb Township, Mich.), Daniel T. Berry (South Lyon, Mich.) and Kirk R. Frame (Clarkston, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for heat treating cylinder bores within an engine includes a laser head and a controller adapted to cause the laser head to move to each cylinder bore and create a first plurality of hardened pills within each one of a first plurality of positional zones, cause the laser head to move to each cylinder bore and...