F04B9/131 - CPC Classification Index

ClassID:

142747 ⎘

F04B9/131 - CPC Classification

Classification description:

Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members

Sub-classes:

F04B9/1315 » {the movement of the pumping pistons in only one direction being obtained by a single-acting piston fluid motor, e.g. actuation in the other direction by spring means} 1
F04B9/133 » reciprocating movement of the pumping members being obtained by a double-acting elastic-fluid motor 33
F04B9/135 » reciprocating movement of the pumping members being obtained by two single-acting elastic-fluid motors, each acting in one direction 20

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