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Class Information
Number: 73/861.42
Name: Measuring and testing > Volume or rate of flow > Using differential pressure
Description: Subject matter wherein the velocity of the fluid to be metered creates a pressure differential or kinetic head across (a) a flow restriction such as a Venturi, flow nozzle or orifice plate, or (b) a Pitot or like device, which differential or head is substantially proportional to a function of the velocity of the fluid.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7412904 |
Isokinetic testing apparatus and system |
Aug. 19, 2008 |
| 7409874 |
Metering apparatus for fuel injector flow test |
Aug. 12, 2008 |
| 7367240 |
Apparatus and method for providing a flow measurement compensated for entrained gas |
May. 6, 2008 |
| 7347089 |
Gas volume contents within a container, smart volume instrument |
Mar. 25, 2008 |
| 7302861 |
Portable flow measurement apparatus having an array of sensors |
Dec. 4, 2007 |
| 7299706 |
Flow meter and method of using the same |
Nov. 27, 2007 |
| 7295934 |
Flow meter performance monitoring system |
Nov. 13, 2007 |
| 7261002 |
Flow rate measurement for industrial sensing applications using unsteady pressures |
Aug. 28, 2007 |
| 7211873 |
Sensor device having thin membrane and method of manufacturing the same |
May. 1, 2007 |
| 7204158 |
Flow control apparatus and method with internally isothermal control volume for flow verification |
Apr. 17, 2007 |
| 7197938 |
Contact-based transducers for characterizing unsteady pressures in pipes |
Apr. 3, 2007 |
| 7165464 |
Apparatus and method for providing a flow measurement compensated for entrained gas |
Jan. 23, 2007 |
| 7162921 |
Measuring device for measuring the volume flow or the substance properties of a gas, whose direction of flow can reverse |
Jan. 16, 2007 |
| 7150202 |
Method and apparatus for measuring characteristics of core-annular flow |
Dec. 19, 2006 |
| 7146864 |
Apparatus having a multi-band sensor assembly for measuring a parameter of a fluid flow flowing within a pipe |
Dec. 12, 2006 |
| 7135749 |
Pressure sensor |
Nov. 14, 2006 |
| 7121152 |
Portable flow measurement apparatus having an array of sensors |
Oct. 17, 2006 |
| 7084363 |
Variable differential adjustor |
Aug. 1, 2006 |
| 7042230 |
Multi-parameter sensing system |
May. 9, 2006 |
| 6983662 |
Bodily flow measuring system |
Jan. 10, 2006 |
| 6945123 |
Gas flow sensor having redundant flow sensing capability |
Sep. 20, 2005 |
| 6935338 |
Fluid resistant airway adapter |
Aug. 30, 2005 |
| 6928884 |
Method and apparatus for measurement of flow rate |
Aug. 16, 2005 |
| 6898339 |
Multiple mode pre-loadable fiber optic pressure and temperature sensor |
May. 24, 2005 |
| 6889562 |
Flow rate measurement for industrial sensing applications using unsteady pressures |
May. 10, 2005 |
| 6842705 |
Gas flow rate measuring device and gas flow rate measuring method |
Jan. 11, 2005 |
| 6826966 |
Flow sensor package |
Dec. 7, 2004 |
| 6789433 |
Purge gas sensor |
Sep. 14, 2004 |
| 6752020 |
Device for measuring pressure, sound and vibration and method of analyzing flow on surfaces of structural parts |
Jun. 22, 2004 |
| 6711525 |
Filter monitor |
Mar. 23, 2004 |
| 6705173 |
Air flow rate meter |
Mar. 16, 2004 |
| 6691584 |
Flow rate measurement using unsteady pressures |
Feb. 17, 2004 |
| 6687643 |
In-situ sensor system and method for data acquisition in liquids |
Feb. 3, 2004 |
| 6666081 |
Sensor probe |
Dec. 23, 2003 |
| 6658946 |
Method of detecting fluid flow through a conduit |
Dec. 9, 2003 |
| 6660528 |
Method for monitoring contaminating particles in a chamber |
Dec. 9, 2003 |
| 6622573 |
Process flow device with improved pressure measurement feature |
Sep. 23, 2003 |
| 6604054 |
Method of detecting fluid flow through a conduit |
Aug. 5, 2003 |
| 6568282 |
Method and apparatus for evaluating a membrane |
May. 27, 2003 |
| 6546805 |
Process fluid transmitter with an environmentally sealed service block |
Apr. 15, 2003 |
| 6536291 |
Optical flow rate measurement using unsteady pressures |
Mar. 25, 2003 |
| 6536271 |
Pump with integral flow monitoring |
Mar. 25, 2003 |
| 6311568 |
Process flow device with improved pressure measurement feature |
Nov. 6, 2001 |
| 6308581 |
Differential pressure flow sensor |
Oct. 30, 2001 |
| 6279405 |
Apparatus and method for a pressure monitoring device |
Aug. 28, 2001 |
| 6244115 |
Flow meter for monitoring liquid flow at low or intermittent rates |
Jun. 12, 2001 |
| 6151557 |
Friction flowmeter with improved software |
Nov. 21, 2000 |
| 6038919 |
Measurement of quantity of incompressible substance in a closed container |
Mar. 21, 2000 |
| 6021677 |
Pipeline system for the controlled distribution of a flowing medium and method for operating such a pipeline system |
Feb. 8, 2000 |
| 6016710 |
Method and apparatus for measuring the quantity of outdoor air processed by an air preconditioning module |
Jan. 25, 2000 |
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