Improvements in the construction of multiple effect membrane pumps. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of multi-effect membrane pumps, characterized in that said pumps comprise several double-acting pistons, whose strokes are uniformly offset in time and which are driven by a common crankshaft, the intake pipes and the branch pipes being respectively connected of injection of the cylinder heads associated with the various pistons by common collectors. (Machine-translation by Google Translate, not legally binding)