Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS

F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00

F04C29/0007Injection of a fluid in the working chamber for sealing, cooling and lubricating F04C29/0014with control systems for the injection of the fluid F04C29/0021Systems for the equilibration of forces acting on the pump F04C29/0028Internal leakage control F04C29/0035Equalization of pressure pulses F04C29/0042Driving elements, brakes, couplings, transmissions specially adapted for pumps F04C29/005Means for transmitting movement from the prime mover to driven parts of the pump F04C29/0057for eccentric movement F04C29/0064Magnetic couplings F04C29/0071Couplings between rotors and input or output shafts acting by interengaging or mating parts F04C29/0078Fixing rotors on shafts F04C29/0085Prime movers F04C29/0092Removing solid or liquid contaminants from the gas under pumping F04C29/02Lubrication Lubricant separation F04C29/021Control systems for the circulation of the lubricant F04C29/023Lubricant distribution through a hollow driving shaft F04C29/025using a lubricant pump F04C29/026Lubricant separation F04C29/028Means for improving or restricting lubricant flow F04C29/04Heating Cooling Heat insulation F04C29/042by injecting a fluid F04C29/045of the electric motor in hermetic pumps F04C29/047Cooling of electronic devices installed inside the pump housing F04C29/06Silencing F04C29/061Silencers using overlapping frequencies F04C29/063Sound absorbing materials F04C29/065Noise dampening volumes F04C29/066with means to enclose the source of noise F04C29/068the silencing means being arranged inside the pump housing F04C29/12Arrangements for admission or discharge of the working fluid F04C29/122Arrangements for supercharging the working space F04C29/124with inlet and outlet valves specially adapted for rotary or oscillating piston pumps F04C29/126of the non-return type F04C29/128of the elastic type