Pump system using a vacuum chamber and mechanical pump combinations
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United States of America Patent
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-
Jan 27, 1998
Grant Date -
N/A
app pub date -
Dec 7, 1993
filing date -
Jun 7, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pump arrangement having a mechanical pump in series with a vacuum compartment on an inlet side of the mechanical pump. The vacuum compartment has a suction line flow connected to the supply of liquid to be pumped and draws that liquid by vacuum to the inlet of the mechanical pump. The mechanical pump includes an outlet for delivering the liquid to be pumped.
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