specially adapted for raising liquids from great depths, e.g. in wells

Full Title

Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped > the fluid medium being mixed with, or generated from, the liquid to be pumped > specially adapted for raising liquids from great depths, e.g. in wells

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS

Subclass:

PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS