Pumps or pumping installations having flexible working members and specially adapted for elastic fluids

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS

F04B45/00Pumps or pumping installations having flexible working members and specially adapted for elastic fluids

F04B45/02having bellows F04B45/022with two or more bellows in parallel F04B45/024with two or more bellows in series F04B45/027having electric drive F04B45/033having fluid drive F04B45/0333the fluid being actuated directly by a piston F04B45/0336the actuating fluid being controlled by one or more valves F04B45/04having plate-like flexible members F04B45/041double acting plate-like flexible pumping member F04B45/043two or more plate-like pumping flexible members in parallel F04B45/045with in- or outlet valve arranged in the plate-like pumping flexible members F04B45/047Pumps having electric drive F04B45/053Pumps having fluid drive F04B45/0533the fluid being actuated directly by a piston F04B45/0536the actuating fluid being controlled by one or more valves F04B45/06having tubular flexible members F04B45/061with fluid drive F04B45/062the fluid being actuated directly by a piston F04B45/064the actuating fluid being controlled by one or more valves F04B45/065with electric drive F04B45/067Pumps having electric drive F04B45/073Pumps having fluid drive F04B45/0733the fluid being actuated directly by a piston F04B45/0736the actuating fluid being controlled by one or more valves F04B45/08having peristaltic action F04B45/085the actuating element being a swash plate F04B45/10having plate-like flexible members