Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2006-08-01
2006-08-01
Patel, Harshad (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
Reexamination Certificate
active
07082842
ABSTRACT:
A method of improving the accuracy of a variable orifice flow meter that includes characterizing the discharge coefficient of the flow meter orifice for different orifice openings and for different differential pressures. The method may be particularly useful with a flow metering and controlling device that includes a fluid flow conduit having at least one planar inner wall and an element having a linear edge configured to mate with the at least one planar inner wall of the fluid flow conduit. The element is movable relative to the conduit to define a flow orifice and vary a cross-sectional area of the orifice. The device also includes a processor configured to calculate the fluid flow based on the cross-sectional area of the orifice, the differential pressure, and the discharge coefficient.
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Measurement and Modeling of the Flow Characteristics of Micro Disc Valves; J. A. Carretero, Massachusettes Institute of Technology; K.S. Breuer, Brown University; 8 pages; presented at a conference in Nov. 2000.
Edwards Grant Bradley
Kielb John Allan
Merchant & Gould P.C.
Patel Harshad
Rivatek Incorporated
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