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Class Information
Number: 73/861.64
Name: Measuring and testing > Volume or rate of flow > Using differential pressure > With restriction > Venturi > Inlet or outlet structure
Description: Subject matter wherein specific details of the converging inlet or diverging outlet are included.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7320252 |
Flow meter using an expanded tube section and sensitive differential pressure measurement |
Jan. 22, 2008 |
| 7107860 |
Flow meter using an expanded tube section and sensitive differential pressure measurement |
Sep. 19, 2006 |
| 6993979 |
Multiphase mass flow meter with variable venturi nozzle |
Feb. 7, 2006 |
| 6910388 |
Flow meter using an expanded tube section and sensitive differential pressure measurement |
Jun. 28, 2005 |
| 6715367 |
Univer plus mass air flow meter |
Apr. 6, 2004 |
| 6601000 |
Device and method for volume determination |
Jul. 29, 2003 |
| 6467359 |
Mass air flow meter |
Oct. 22, 2002 |
| 6332111 |
Method and system for measuring multiphase flow using multiple pressure differentials |
Dec. 18, 2001 |
| 5898108 |
Evaporative emission tester |
Apr. 27, 1999 |
| 5739429 |
Powder coating system incorporating improved method and apparatus for monitoring flow rate of entrained particulate flow |
Apr. 14, 1998 |
| 5616841 |
Flow metering device for landfill gas extraction well |
Apr. 1, 1997 |
| 5426975 |
Method and apparatus for determining the total flow rate in a ventilation installation |
Jun. 27, 1995 |
| 5374013 |
Method and apparatus for reducing drag on a moving body |
Dec. 20, 1994 |
| 5063787 |
Venturi arrangement |
Nov. 12, 1991 |
| 4974452 |
Homogenizing and metering the flow of a multiphase mixture of fluids |
Dec. 4, 1990 |
| 4649760 |
Method and apparatus for controlling flow volume through an aerosol sampler |
Mar. 17, 1987 |
| 4644800 |
Annular venturi flow measuring device |
Feb. 24, 1987 |
| 4528847 |
Flow metering device with recessed pressure taps |
Jul. 16, 1985 |
| 4516434 |
Flow metering device with low energy loss |
May. 14, 1985 |
| 4506594 |
Fluid flow control apparatus and method |
Mar. 26, 1985 |
| 4324143 |
Single path adjustable flowmeter |
Apr. 13, 1982 |
| 4164144 |
Fluid flowmeter |
Aug. 14, 1979 |
| 4050306 |
Method and apparatus for measuring pressures |
Sep. 27, 1977 |
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