7 Metalworking, plastics, wood and ceramic working machines for workpiece machining and for the technology of automation, clamping and gripping as well as structural parts of the aforementioned machines; machine clamping devices for workpieces and tools, in particular electrical, magnetic, pneumatic, hydraulic clamps and spring-activated clamps operating with negative pressure as well as structural parts thereof; jaw chucks, expansion jaw chucks, clamping blocks, clamping vices, steady rests, vices, clamping cylinders, collets, clamping tools, zero point clamping devices, clamping plates and clamping tables, tombstones, the aforementioned goods being machine parts; machine gripping devices for workpieces and tools, in particular electrical, magnetic, pneumatic, and hydraulic clamps and spring-activated clamps operating with negative pressure as well as parts thereof; parallel grippers, centric grippers, angular grippers, radial grippers, the aforementioned goods being machine parts; clamping and gripping jaws, in particular top jaws, pendulum jaws, collet jaws for machine clamping devices and gripping devices, the aforementioned goods being parts of machines; machine tools, namely, machine jaw changing devices for clamping and gripping devices as well as structural parts thereof; power-operated machines, namely, machine lifting and holding devices for workpieces and tools, in particular electrical, magnetic, pneumatic, hydraulic, spring-activated lifting and holding devices operating with negative pressure as well as structural parts thereof; power-operated machines, namely, machine manipulation devices for workpieces and tools as well as structural parts thereof; Robots, namely, industrial robots, service robots for personal and clinical use, and robots with hinged brackets for the manipulation of workpieces and tools as well as structural parts thereof; machines for vacuum technology, in particular vacuum suction grippers and clamps, vacuum suction valves, pads and ejectors as well as structural parts thereof; electrical, magnetic, pneumatic, hydraulic, spring-activated sliding machines, pivoting machines, lifting machines, elevating machines, turning machines operating with negative pressure as well as structural parts thereof; electromotive, pneumatic, and hydraulic actuators for clamping, gripping, lifting, manipulating, sliding, pivoting, lifting, elevating and turning devices as well as structural parts thereof; linear actuators and linear modules consisting thereof; machine tilting devices in the nature of machine tools, namely, clamps, mounts and vices; machine parts, namely, turning passage guides for machines; [ balancing machines for balancing tools; ] mandrels being parts of machines; modular clutches for machines; power-operated machines, namely, quick change systems for tools and automation components, consisting of robotic tool changers, robotic collision sensors, machine tool changers and tool retaining systems for positioning and mounting tools; valves as parts of machines, in particular vacuum valves, pressure valves, pressure maintaining valves, check valves; valve blocks as parts of machines [; laser machining machines, laser welding machines as well as structural parts thereof ]