Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2011-03-08
2011-03-08
Lau, Tung S (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
Reexamination Certificate
active
07904258
ABSTRACT:
A system for determining a viscosity of a fluid is provided. The system includes an intake chamber, a tube, a piston, an actuator, a sensor, and a processor. The tube communicates with the intake chamber and includes a channel including a cylindrical portion with a constant diameter cross section. The piston is mounted in the intake chamber. The actuator is configured to move the piston within the intake chamber at a constant speed during a time window to regulate a fluid in the cylindrical portion. The sensor is configured to measure a pressure a plurality of times during the time window to define a plurality of pressure measurements. The processor is configured to receive the defined plurality of pressure measurements, to determine a slope associated with the received plurality of pressure measurements, and to determine a viscosity of the fluid based on the determined slope.
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Foley & Lardner LLP
Gilson SAS
Lau Tung S
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