MECHANICAL POWER TRANSMISSIONS, GEARS, GEARINGS, SPEED CHANGES, REDUCTION GEARS, REVERSING GEARS, LINKS, CAMS, GEARS, ROLLER CHAINS, BELTS FOR POWER TRANSMISSION, PULLEYS, FLUID COUPLERS, TORQUE CONVERTERS, HYDRAULIC ACCUMULATORS, INTENSIFYING COMPRESSORS, AND GEAR LADLES USED IN BLAST FURNACES