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US 6,041,801 AGranted
System and method for measuring when fluid has stopped flowing within a line
AssigneeDEKA Products Limited Partnership
InventorsLarry Gray, Robert Bryant, Geoffrey Spencer, John B. Morrell
Life of this patent
Estimating the term…
Abstract
A method and system for determining when a fluid has stopped flowing within a line. The pressure variation in a second fluid, separated from the first by a pumping membrane, is measured in response to energy applied in a time-varying manner to the second fluid. From the response of the second fluid to the applied energy, it is determined whether the first fluid has stopped flowing.
Claims8
A method for determining when a first fluid having a pressure has stopped flowing within a line, the method comprising:
- applying a time varying amount of energy to a second fluid separated from the first fluid by a membrane;
- measuring a pressure of the second fluid in response to the applied energy;
- and
- determining whether the first fluid has stopped flowing based at least on the pressure of the second fluid.
1 more element
Dependencies are inferred from the claim text.