Fluid meter
Patent 5003810 Issued on April 2, 1991. Estimated Expiration Date: 
August 26, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 26, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2805574 3219046 High temperature mass flowmeter Hybrid airflow measurement Fludic oscillator flowmeters Relating to devices for measuring fluid density Custody transfer meter Fluid metering system Patent #: 4938053 InventorsAssigneeApplicationNo. 237389 filed on 08/26/1988US Classes:73/196, Flow comparing73/195, System73/861.03, Digital73/861.19, Produced by fluidic oscillator73/861.74, On a vane702/49, Radiant energy702/100Fluid or fluid flow measurementExaminersPrimary: Noland, TomAttorney, Agent or FirmForeign Patent References
International ClassesG01F 025/00G01F 007/00 Foreign Application Priority Data1987-08-28 GBAbstractA fluid meter comprises at least three sensors each having an output dependent on a respective characteristic of the fluid to be monitored, circuitry to combine the outputs of two of the sensors to provide a measurement of mass flowrate of the fluid, and to combine the outputs of the three sensors to provide an error signal which can be used to recalibrate the measurement.Field of SearchElectricalDigital Using turbine System Compound meter By measuring thrust or drag forces By changing fluid direction Impact of particulate material On a vane With rotation about a fixed axis Spring biased Using rotating member with particular electrical output or circuit With pick-up coil By measuring vibrations or acoustic energy Caused by fluid interaction with obstacle | |
