Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00

Child Classifications

Navigate with arrow keys, Enter to open

• F04B 49/002
• F04B 49/005
• F04B 49/007
• F04B 49/02 Stopping, starting, unloading or idling control
• F04B 49/04 Regulating by means of floats (F04B49/025 takes precedence)
• F04B 49/06 Control using electricity (regulating by means of floats actuating electric switches F04B49/04)
• F04B 49/08 Regulating by delivery pressure
• F04B 49/10 Other safety measures
• F04B 49/12 by varying the length of stroke of the working members
• F04B 49/16 by adjusting the capacity of dead spaces of working chambers
• F04B 49/18 by changing the effective cross-section of the working surface of the piston
• F04B 49/20 by changing the driving speed
• F04B 49/22 by means of valves (F04B49/03 takes precedence)