ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,277, issued on June 17, was assigned to CNC-Technik LAPP GmbH (Neuburg A.D. Donau, Germany).
"Screw clamp" was invented by Albert Lapp (Buxheim, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A screw clamp has two clamping arms, between which a workpiece is clamped. In a clamping process, at least one of the clamping arms is moved by an axial movement distance by a clamping unit such that a clamping force acting against the workpiece is built up, which clamping unit can be manually rotationally actuated about an axis of rotation. The clamping unit is a threaded drive containing a radially outer adjustment sleeve which has an internal screw t...