rectilinear movement of the pumping member in the working direction being obtained by a single-acting elastic-fluid motor, e.g. actuated in the other direction by gravity or a spring

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 elastic, e.g. steam or air > having only one pumping chamber > rectilinear movement of the pumping member in the working direction being obtained by a single-acting elastic-fluid motor, e.g. actuated in the other direction by gravity or a spring

Child Classifications

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• F04B 9/1273
• F04B 9/1276