ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,426, issued on March 31, was assigned to LEIFELD METAL SPINNING GMBH (Ahlen, Germany).
"Flow-forming machine and method for flow-forming" was invented by Benedikt Nillies (Ahlen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a flow-forming machine and a method for flow-forming a substantially rotation-symmetric workpiece having a drum-shaped circumferential portion, comprising a spindle which can be driven in rotation about a spindle axis, a clamping device which is arranged on the spindle and has a plurality of clamping elements which are adjustable between a clamping position, in which the clamping elements abut ...