ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,516, issued on Jan. 28, was assigned to FEDERAL-MOGUL VALVETRAIN GMBH (Barsinghausen, Germany).
"Armored poppet valve and method for the production thereof" was invented by Thorsten Matthias (Garbsen, Germany) and Stefan Kellermann (Barsinghausen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for the production of a poppet valve which is armoured in at least the region of a valve seat, comprising providing a substantially cylindrical or cup-shaped semi-finished product produced from a valve steel, which is coated with an armouring material, whereupon the coated semi-finished product is formed into an armoured poppet valve."
The pa...