Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Load children
F04
POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
Load children
F04B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
Load children
43/00
Machines, pumps, or pumping installations having flexible working members
Load children Filter patents View analytics View as hierarchy
F04B43/08
having tubular flexible members
Load children Filter patents View analytics View as hierarchy
F04B43/082
the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
Filter patents View analytics View as hierarchy