ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,236, issued on July 15, was assigned to HERRMANN ULTRASCHALLTECHNIK GMBH & Co. KG (Karlsbad, Germany).
"Counter-element for ultrasonic machining" was invented by Raquel Roussel-Garcia (Pforzheim, Germany), Robin Alexander Bode (Pforzheim, Germany) and Timo Zink (Karlsruhe, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A counter-element for processing a material by means of ultrasound, the counter-element having a sealing surface, the sealing surface having a welding portion which is at least partially concavely curved. The sealing surface has a feed-in portion which is arranged adjoining the weld portion and is either not curved or is conca...