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Class Information
Number: 73/861.23
Name: Measuring and testing > Volume or rate of flow > By measuring vibrations or acoustic energy > Caused by fluid interaction with obstacle > Vortex shedders > Acoustic
Description: Subject matter wherein an acoustic wave is transmitted through the fluid by transducer means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7618820 |
System and method for determining the operating state of orthopaedic admixtures |
Nov. 17, 2009 |
| 7526966 |
Apparatus and method for measuring a parameter of a multiphase flow |
May. 5, 2009 |
| 7516024 |
Method and apparatus for measuring parameters of a stratified flow |
Apr. 7, 2009 |
| 7437946 |
Apparatus and method for measuring a parameter of a multiphase flow |
Oct. 21, 2008 |
| 7373839 |
Apparatus for determining and/or monitoring volume- and/or mass-flow of a medium in a pipeline |
May. 20, 2008 |
| 7343819 |
Flow meter for gaseous media |
Mar. 18, 2008 |
| 7343820 |
Apparatus and method for fiscal measuring of an aerated fluid |
Mar. 18, 2008 |
| 7290450 |
Process diagnostics |
Nov. 6, 2007 |
| 7267013 |
System and method of measuring fluid flow |
Sep. 11, 2007 |
| 7197942 |
Apparatus for measuring velocity and flow rate of a fluid having a non-negligible axial mach number using an array of sensors |
Apr. 3, 2007 |
| 7107859 |
Ultrasonic seepage meter |
Sep. 19, 2006 |
| 7093501 |
Process and device for measuring flow parameters |
Aug. 22, 2006 |
| 7027357 |
Acoustic communication device and acoustic signal communication method |
Apr. 11, 2006 |
| 6973833 |
Wafer and method |
Dec. 13, 2005 |
| 6965835 |
Torque angle sensing system and method with angle indication |
Nov. 15, 2005 |
| 6940409 |
Fluid flow detector |
Sep. 6, 2005 |
| 6938497 |
Acoustic flow meter in the form of a valve key |
Sep. 6, 2005 |
| 6925853 |
Air quality sampler using solid phase coated material |
Aug. 9, 2005 |
| 6895823 |
Device for measuring the flow rate and/or the flow throughput of a fluid |
May. 24, 2005 |
| 6874371 |
Ultrasonic seepage meter |
Apr. 5, 2005 |
| 6782150 |
Apparatus for sensing fluid in a pipe |
Aug. 24, 2004 |
| 6778100 |
Conduit network system |
Aug. 17, 2004 |
| 6647804 |
System and method for flow measurement in a pipe |
Nov. 18, 2003 |
| 6552336 |
Non-invasive, opto-acoustic water current measurement system and method |
Apr. 22, 2003 |
| 6227058 |
High precision flow meter for measuring a gaseous volume flow in a pipe |
May. 8, 2001 |
| 5880377 |
Method for low velocity measurement of fluid flow |
Mar. 9, 1999 |
| 5747701 |
Ultrasonic vortex flowmeter having remote signal processing |
May. 5, 1998 |
| 5736649 |
Vortex flowmeter |
Apr. 7, 1998 |
| 5728947 |
Ultrasonic vortex flowmeter having clamp-on housing |
Mar. 17, 1998 |
| 5684250 |
Self-calibrating open-channel flowmeter |
Nov. 4, 1997 |
| 5639667 |
Process and device for monitoring by periodic excitation a flow of particles in a pipe |
Jun. 17, 1997 |
| 5633809 |
Multi-function flow monitoring apparatus with area velocity sensor capability |
May. 27, 1997 |
| 5503035 |
Ultrasonic fluid vibrating flowmeter |
Apr. 2, 1996 |
| 5463905 |
Portable non-invasive flowmeter for partially filled pipe |
Nov. 7, 1995 |
| 5421211 |
Liquid flowmeter including doppler signal processing, and method |
Jun. 6, 1995 |
| 5036240 |
Impulse sensor with mechanical preamplification and noise cancellation |
Jul. 30, 1991 |
| 5005425 |
Vortex flowmeter |
Apr. 9, 1991 |
| 4977781 |
Vortex flow meter |
Dec. 18, 1990 |
| 4970902 |
Karman's vortex flow meter |
Nov. 20, 1990 |
| 4966040 |
Karman vortex flowmeter with signal waveform shaper circuit |
Oct. 30, 1990 |
| 4958524 |
Flow meter |
Sep. 25, 1990 |
| 4924710 |
Vortex flowmeter |
May. 15, 1990 |
| 4879908 |
Suction air measuring device |
Nov. 14, 1989 |
| 4815324 |
Intake air meter for an internal combustion engine |
Mar. 28, 1989 |
| 4776222 |
Impulse sensor with mechanical preamplification |
Oct. 11, 1988 |
| 4606318 |
Fuel injection control system for internal combustion engine |
Aug. 19, 1986 |
| 4588091 |
Method and apparatus to determine quality of particulate material |
May. 13, 1986 |
| 4567776 |
Fluid flowmeter of Karman vortex detecting type |
Feb. 4, 1986 |
| 4452089 |
Karman's vortex street current meter |
Jun. 5, 1984 |
| 4448064 |
Device for detecting the intake air flow rate in an internal combustion engine |
May. 15, 1984 |
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