Invention Grant
US08722422B2 Uninterrupted flow pump apparatus and method 有权
不间断流量泵装置及方法

Uninterrupted flow pump apparatus and method
Abstract:
This invention describes a method for pumping or delivering fluids utilizing a flexible vessel subject to controlled pressures within another pressure vessel. The pressure vessel can be sourced with positive and/or negative (e.g., vacuum) pressure.
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