Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F04
POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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F04B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
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45/00
Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
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F04B45/04
having plate-like flexible members, e.g. diaphragms
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F04B45/053
Pumps having fluid drive
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F04B45/0536
the actuating fluid being controlled by one or more valves
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