Selective mode multi-stage vacuum pump

The invention pertains to vacuum pump structure, and the innovations include a multiple pumping chamber pump wherein substantially identical pumping chambers may be assembled in contiguous relationship, and by the selective use of a pump head plate mounted upon both chambers the pump may operate in...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CAIN, ROBERT L
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:The invention pertains to vacuum pump structure, and the innovations include a multiple pumping chamber pump wherein substantially identical pumping chambers may be assembled in contiguous relationship, and by the selective use of a pump head plate mounted upon both chambers the pump may operate in either a series or parallel mode. Further innovations include a novel air conducting nozzle which minimizes oil loss, and the pump employs a combination carrying handle and base interposed between the motor and pumping structure which facilitates assembly and handling.