Reciprocating machines

A reciprocating machine such as a vacuum pump includes a cylinder in which a reciprocating piston is disposed for reciprocating movement. A variable voltage driver is provided for driving the piston and a vibration sensor is provided for sensing contact between the piston and ends of the cylinder. A...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DOVEY STEPHEN J, STONES IAN D, SHELLEY GERALD R
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A reciprocating machine such as a vacuum pump includes a cylinder in which a reciprocating piston is disposed for reciprocating movement. A variable voltage driver is provided for driving the piston and a vibration sensor is provided for sensing contact between the piston and ends of the cylinder. A controller interconnects the sensor and driver to control movement of the driver and piston to maximize piston stroke and reduce if not eliminate contacting of the piston with the cylinder.