PNEUMATIC HYDRAULIC DEVICES COMBINED

Brand	Owner	Address	Description
EN-TRONIC	SIEMENS ENERGY GLOBAL GMBH & CO. KG	Otto-Hahn-Ring 6 München 81739 Germany	PNEUMATIC AND HYDRAULIC DEVICES COMBINED IN SYSTEMS FOR THE AUTOMATIC SEQUENTIAL CONTROL OF INTERNAL COMBUSTION ENGINES, COMBUSTION GAS TURBINES, STEAM ENGINES, EXPANSION ENGINES, AND RECIPROCATING AND CENTRIFUGAL COMPRESSORS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An air driven hydraulic pump includes two opposed cylinders to either side of a center section. Two pneumatic pistons are slidable in the opposed cylinders and are coupled with one another by a common shaft extending through the center section. The pneumatic pistons ride in the opposed pneumatic cylinders and include hydraulic plungers extending therefrom. Cylinder heads integral with the cylinders provide hydraulic cylinders aligned with the hydraulic plungers. An air valve delivers pneumatic pressure to alternate sides of both pneumatic pistons such that the forces on the pistons are additive alternately in each direction.