Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2006-08-30
2008-11-18
Patel, Harshad (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
Reexamination Certificate
active
07451663
ABSTRACT:
A flow meter tube is provided having improved performance in the measurement of the flow rate of erosive material. The internal wall surface of the flow meter tube has a smooth erosion-resistant coating thereon to protect the flow meter wall from erosion by the erosive fluid flowing there through. The coating has a Rockwell C hardness of 56 to 70 and a surface roughness of less than or equal to 250 microinches rms.
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Juliot Chad A.
Kimball Douglas W.
Kennametal Inc.
Patel Harshad
Smith Matthew W.
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