US Patent 9133867 Linear mechanical quick-release fastener

A linear mechanical quick release fastener is operated by three movements with self-centering chucks and for mounting all types of compatible clamping devices for machining workpieces, especially on automatic precision machine tools. A bottom part has raised locking elements formed integrally in one piece one after another on a plane along a direction at right angles to a clamping direction and base jaws formed integrally in one piece, with a threaded hole for a clamping bolt and a screw element. A top part has recesses, one after another along a direction at right angles to the clamping direction, designed as a counterpiece of the locking elements. One recess is connected at an open front side to a mounting area recessed continuously, which is accessible from the top, and another recess is open on a front side. The top part can receive an upper plane of any compatible clamping device.