US Patent Issued to GRENZEBACH MASCHINENBAU on March 25 for "Device and method for increasing the speed and increasing the stability of the welding pin in friction stir welding" (German Inventor)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,643, issued on March 25, was assigned to GRENZEBACH MASCHINENBAU GMBH (Asbach-Baumenheim, Germany).

"Device and method for increasing the speed and increasing the stability of the welding pin in friction stir welding" was invented by Markus Weigl (Donauwoerth, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a device and method for increasing the speed and increasing the stability of the welding pin in friction stir welding with the following device features: a) a tool drive has a retaining flange for a cone-shaped tool cover with a union nut; b) an annular retaining ring surrounds a pin shank with a tool shoe secured...