Work machines for the building and for the building materials industry, namely walk behind power trowels, ride-on trowels; vibrating machines, namely, vibratory rammers, vibratory plates, vibratory rollers, vibratory screeds, concrete internal vibrators, concrete external vibrators, driving motors for concrete vibrators, motorized vibration wet screeds, truss screeds, hammers, rammers, vibratory plates, and parts therefor, namely, machine tools for leveling concrete surfaces, shaft motors, vibration motors, flexible shafts; motor driven hammers, gasoline and electric hammers, drilling machines, hammer drills; rammers in the nature of machines, tampers machines for soil compaction and asphalt compaction, namely, rollers and plates; tamping rollers; machine pumps for clean water and dirty water for draining pits and trenches, namely, diaphragm pumps, centrifugal pumps, centrifugal trash pumps, submersible electric pumps, modular submersible pumps with flexible shafts; cutting devices and joint cutting devices in particular cutting devices for asphalt and concrete in the nature of cutting machines, sawing machines, joint saws, cut-off saws, cutting discs for use as part of cutting devices; machine concrete flat pans, namely, concrete impeller flat pans, power trowels and concrete surface flatteners; electric power generators; emergency power generators; apparatus for cutting reinforcing steel, namely, machines for cutting steel that is used for reinforcing; apparatus for bending reinforcing steel, namely, machines for bending steel that is used for reinforcing