| Patents for G01F 1 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow (42,661) |
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| 06/23/1981 | US4275291 Rotation sensor |
| 06/17/1981 | EP0030253A2 Solids mass flow determination |
| 06/16/1981 | US4272995 Ionization flow meter |
| 06/16/1981 | US4272982 Fluid flow meter for mixed liquid and gas |
| 06/16/1981 | CA1103058A1 Maximum strength/weight fluid metering device |
| 06/16/1981 | CA1103057A1 Air velocity gauge |
| 06/16/1981 | CA1103056A1 Oscillating wing flowmeter |
| 06/09/1981 | US4271794 Fuel delivery apparatus |
| 06/09/1981 | US4271708 Ultrasonic measuring apparatus |
| 06/09/1981 | US4271701 Gas flow measuring system |
| 06/03/1981 | EP0029509A1 Measuring apparatus |
| 06/03/1981 | EP0029492A1 Flow meter |
| 06/02/1981 | US4270694 Fluid flow regulating systems |
| 06/02/1981 | US4270558 Process for monitoring the flow of fine grained solid fuel for use in gasifiers |
| 06/02/1981 | US4270391 Frequency-responsive filter for flowmeter transmission system |
| 06/02/1981 | US4270386 Indirectly heated thermal flowmeter |
| 06/02/1981 | CA1102442A1 Ultrasonic flowmeter |
| 05/28/1981 | WO1981001468A1 Method for continuously determining the composition and mass flow of a slurry |
| 05/28/1981 | WO1981001462A1 Method and apparatus for measuring fuel flow |
| 05/27/1981 | EP0029336A1 Improvements in or relating to flowmeters |
| 05/26/1981 | US4269157 Fuel injection system |
| 05/26/1981 | US4269071 Electrodes for an electromagnetic flow meter |
| 05/26/1981 | CA1102014A1 Method and apparatus for measuring azimuth and speed of horizontal fluid flow by a borehole |
| 05/26/1981 | CA1101765A1 Process for etching holes |
| 05/12/1981 | US4266697 Controlled volume liquid meter defining improved plunger means |
| 05/12/1981 | US4266425 Method for continuously determining the composition and mass flow of butter and similar substances from a manufacturing process |
| 05/12/1981 | CA1101070A1 Nonconductive vapor/solid or liquid fraction determination |
| 05/12/1981 | CA1100779A1 Turbine meter in-line checking apparatus and method |
| 05/05/1981 | US4265251 Method of determining pressure within liquid containing vessel |
| 05/05/1981 | US4265127 Low meter system provided with a pulse generator |
| 05/05/1981 | US4265126 Measurement of true blood velocity by an ultrasound system |
| 05/05/1981 | US4265125 Flowmeter method and apparatus |
| 05/05/1981 | CA1100333A1 Remotely controlled retractable insertion flowmeter |
| 04/28/1981 | US4264961 Air flow rate measuring apparatus |
| 04/28/1981 | US4264330 Consisting of an active material and foamed plastic |
| 04/28/1981 | US4263884 Electronic fuel feed system |
| 04/28/1981 | US4263813 Rotameter-type flowmeter with means for linearizing output readings |
| 04/28/1981 | US4263812 Flow sensor |
| 04/28/1981 | CA1099952A1 Vortex shedding flowmeter assembly |
| 04/22/1981 | EP0027402A2 Device for measuring the flow of a fluid and system for sensing the flow of air in an internal-combustion engine making use of such a device |
| 04/22/1981 | EP0027392A1 Gas velocity measurement sensor |
| 04/22/1981 | EP0027181A2 Electro-magnetic flow meter |
| 04/21/1981 | US4263002 Differential doppler technique for on-axis backscatter measurements |
| 04/21/1981 | US4262545 Acoustic fluid velocity measuring system |
| 04/21/1981 | US4262544 Torque-transducer for vortex-shedding flowmeter having torsional sensor |
| 04/21/1981 | US4262543 Magnetic flowmeter having multiple stage amplifier with automatic zeroing |
| 04/21/1981 | US4262542 Family of magnetic flowmeters |
| 04/21/1981 | US4262530 System for measuring oil consumption |
| 04/16/1981 | WO1981001053A1 Mass rate of flow meter |
| 04/16/1981 | WO1981001052A1 Mass rate of flow meter |
| 04/16/1981 | WO1981001051A1 Mass rate of flow meter |
| 04/16/1981 | WO1981001050A1 Mass rate of flow meter |
| 04/16/1981 | WO1981001049A1 Mass rate of flow meter |
| 04/16/1981 | WO1981001048A1 Mass rate of flow meter |
| 04/15/1981 | EP0026877A2 Method and arrangement for the correlation of two signals |
| 04/14/1981 | US4262343 Pressure pulse detection apparatus |
| 04/14/1981 | US4261210 Stacked wafer helical flowmeter |
| 04/14/1981 | US4261201 Wind chill indicator |
| 04/14/1981 | US4261199 Air flow measurement apparatus |
| 04/14/1981 | US4261196 Method and apparatus for determining solids conveyed in a slurry moving in a pipe |
| 04/14/1981 | CA1099385A1 Ultrasonically operative device for determining physical quantities of a medium |
| 04/14/1981 | CA1099384A1 Circuit arrangement for determining physical parameters of flowing media by the ultrasonic method |
| 04/14/1981 | CA1099383A1 Apparatus for ultrasonically measuring physical parameters of flowing media |
| 04/08/1981 | EP0026715A2 Drag flow meter |
| 04/07/1981 | US4259870 Doppler method of measuring flow |
| 04/07/1981 | CA1099033A1 Method of measuring horizontal fluid flow behind casing with sequential logging |
| 03/31/1981 | US4259638 Apparatus for inducing nuclear magnetic resonance within flowing mediums including superconducting coils |
| 03/31/1981 | US4258565 Force detector |
| 03/25/1981 | EP0025576A2 Turbulence conveyor flowmeter for medical use |
| 03/25/1981 | EP0025450A1 A method and a meter for measuring quantities of heat. |
| 03/24/1981 | US4257748 Flow indicator for positive displacement pump |
| 03/24/1981 | US4257279 Rotameter with float guide members |
| 03/24/1981 | US4257278 Quantitative volume blood flow measurement by an ultrasound imaging system featuring a Doppler modality |
| 03/24/1981 | US4257277 Flow measuring device |
| 03/24/1981 | US4257276 Probe unit of fluid flow rate measuring apparatus |
| 03/24/1981 | US4257275 Velocity detecting apparatus |
| 03/24/1981 | CA1097943A1 Mass flow sensor and method |
| 03/18/1981 | EP0025149A2 Gas flow measuring apparatus |
| 03/17/1981 | US4256075 Fuel feed device for engine |
| 03/17/1981 | US4255977 Double repetition rate doppler flow measurement system |
| 03/17/1981 | US4255976 Apparatus and method for measuring the velocity of a moving dielectric material |
| 03/17/1981 | US4255968 Flow indicator |
| 03/17/1981 | CA1097789A1 Apparatus for ultrasonic measurement |
| 03/17/1981 | CA1097521A1 Ram pump flowmeter |
| 03/17/1981 | CA1097518A1 Turbine meter for bi-directional measurement of fluid flow |
| 03/11/1981 | EP0025026A2 Device for measuring the flow velocity of a fluid |
| 03/11/1981 | EP0024867A1 Apparatus for the detection of stagnant particles |
| 03/11/1981 | EP0024742A2 Device for indicating the momentary fuel consumption of a motor vehicle |
| 03/10/1981 | US4255235 Stainless steel chimney, titanium alloy propeller, titanium carbide shaft tips |
| 03/10/1981 | US4255088 Liquid pumping system having means for detecting gas in the pump |
| 03/10/1981 | US4254744 Method and apparatus for measuring air quantity in relation to engine speed |
| 03/10/1981 | US4254664 Flow meters |
| 03/04/1981 | EP0024327A1 Respirometer for measuring the respiratory flow rate and direction |
| 03/03/1981 | US4254482 Echo location system which provides for measuring liquid level and flow rate and flow volume of flowing liquids |
| 03/03/1981 | US4253341 Water meter comprising a ferromagnetic magnetoresistor coupled to a rotatable permanent magnet |
| 03/03/1981 | US4253340 Unitary electromagnetic flowmeter |
| 03/03/1981 | CA1096655A1 Multiphase fluid flow meter |
| 02/25/1981 | EP0024145A2 Turbine flowmeters |
| 02/24/1981 | US4252076 Automatic signaling device |
| 02/24/1981 | US4252028 Method and apparatus for measuring flow |