Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2008-07-01
2008-07-01
Patel, Harshad (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
C073S727000, C073S866500
Reexamination Certificate
active
11650987
ABSTRACT:
The flow meter probe with force sensors has the body of a frustum of a regular pyramid with a force sensor disposed upon each face. The force sensors are mounted in bores defined in the probe body and include a pin that may be displaced in the bore to exert pressure on an electrical transducer. The transducer may be a ceramic, piezoelectric sensor or a Micro-Electro-Mechanical System (MEMS) sensor. The pin has an aerodynamically- or hydrodynamically-shaped head, a cylindrical body, and a frustoconical tail to concentrate force exerted upon the sensor. The head of the pin protrudes slightly above the face of the probe body so that aerodynamic and hydrodynamic forces are exerted directly against the pin, and pin displacement measures the forces directly. A plurality of probes may be placed in the path of fluid flow in a variety of configurations, as desired.
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Ben-Mansour Rached
Hawwa Muhammad A.
King Fahd University of Petroleum and Minerals
Litman Richard C.
Patel Harshad
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