F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
Transmission, notamment entre un arbre moteur et un arbre d'entrainement de roues d'un engin, engin de preference automoteur equipe d'une telle transmission et son procede de commande en fonctionnement