Measuring and testing – Gas analysis – Solid content of gas
Reexamination Certificate
2007-10-02
2007-10-02
Cygan, Michael (Department: 2855)
Measuring and testing
Gas analysis
Solid content of gas
C073S028020
Reexamination Certificate
active
11161221
ABSTRACT:
A fluid conveyance apparatus having more than one particulate matter sensing probe situated at two or more locations on the apparatus. Signals from the probes from at least two locations may indicate particulate matter flowing within a fluid through the conveyance apparatus. The times between signals may be indicated the rate of movement of the particulate matter in the conveyance apparatus and also a flow rate and direction of the fluid. The sensing probe signals may be processed into control signals that may go to a flow control mechanism. An example application of the flow control mechanism may be for an exhaust gas recirculation system of an engine.
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“BG-3 Transient & Steady-State Particulate Flow Sampling System,” Sierra Instruments, Inc., 4 pages, prior to filing date of present application.
Krafthefer Brian C.
Rhodes Michael L.
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