F. Mechanical engineering, lighting, heating, weapons, blasting
F0 1 universal machine or engine; Universal engine unit; steam engine
F02 internal combustion engine; Engine device for hot gas or combustion products
F03 hydraulic machinery or hydraulic engine; Wind, elastic or gravity engines; Engines that generate mechanical power or reverse thrust, not included in other categories.
F04 liquid variable displacement machinery; Liquid pump or elastic fluid pump
F 15 fluid pressure actuator; General hydraulic technology and pneumatic technology
F 16 engineering components or parts; General measures to produce and maintain the effective operation of machinery or equipment; Generally adiabatic
F 17 storage or distribution of gas or liquid
F2 1 lighting
F22 steam generation
F23 combustion equipment; combustion method
F24 heating; Stove; ventilate
F25 refrigeration or cooling; Combined heating and cooling system; Heat pump system; The manufacture or storage of ice; Liquefaction or solidification of gas
F26 drying
F27 furnace; Kiln; Oven; distillation furnace
F28 general heat exchanger
F4 1 Weapons
F42 ammunition; explosion
F99 Technical topics not included in other categories in this part.