with two mechanically connected pumping members

Full Title

Piston machines or pumps characterised by the driving or driven means to or from their working members > the means being fluid > the fluid being liquid > having plural pumping chambers > with two mechanically connected pumping members

Child Classifications

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• F04B 9/1115
• F04B 9/113 reciprocating movement of the pumping members being obtained by a double-acting liquid motor
• F04B 9/115 reciprocating movement of the pumping members being obtained by two single-acting liquid motors, each acting in one direction