| Patents for G01P 5 - Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft (8,453) |
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| 11/27/1991 | EP0458275A2 Doppler velocimeter and apparatus using the same |
| 11/27/1991 | EP0458272A2 Doppler velocimeter |
| 11/26/1991 | US5067356 Conditional sampling technique for flux measurement |
| 11/26/1991 | CA1292532C Optical displacement sensor |
| 11/14/1991 | WO1991017412A1 Constant temperature anemometer |
| 11/13/1991 | CN1014744B Split-seconds type silicon varistor pulsating flow rhysimeter probe |
| 11/12/1991 | US5063931 Method and apparatus for signal dependent gain control |
| 11/12/1991 | US5063777 Method and device for determining the speed of a helicopter with respect to the air |
| 11/12/1991 | CA1291883C Hot wire air flow meter |
| 11/07/1991 | DE4016529C1 Flowmeter for open duct - has flow sensor movable across channel to supply computer with flow speeds measured at several points |
| 11/06/1991 | EP0158664B1 Apparatus for correcting barometric pressure for wind velocity and direction |
| 11/05/1991 | US5063352 Circuit arrangement with a flow probe operated in a bridge circuit |
| 11/05/1991 | US5062869 Water separator for air data sensor |
| 10/31/1991 | WO1991016605A1 Process and device for measuring air flow |
| 10/31/1991 | WO1991016604A1 Process for manufacturing micro-mechanical sensors |
| 10/31/1991 | DE4013702A1 Detecting turbulence in atmos. from wind speed in selected zone - using Doppler effect between laser beam of predetermined frequency transmitted in measuring direction and returned light |
| 10/29/1991 | US5061350 Method for producing detecting element |
| 10/29/1991 | US5060522 Mass-volume vortex flowmeter |
| 10/29/1991 | US5060511 Intake air quantity measuring apparatus |
| 10/24/1991 | DE4112601A1 Gas flow measurement arrangement, esp. for engine air induction system - has thermally sensitive thin film resistances on electrically insulating carrier in air flow |
| 10/23/1991 | EP0452531A1 Electric measuring device for determining the propagation time of an electrical signal |
| 10/22/1991 | US5059909 Determination of particle size and electrical charge |
| 10/22/1991 | US5058594 Direct velocity estimator for ultrasound blood flow imaging |
| 10/19/1991 | WO1991016000A1 Method and apparatus for determining the velocity of a flowing liquid |
| 10/19/1991 | CA2080470A1 Method and apparatus for determining the velocity of a flowing liquid |
| 10/17/1991 | WO1991015737A1 Ultrasonic flowmeter for fluids |
| 10/17/1991 | DE4012081A1 Verfahren und anordnung zum messen von luftmengen Method and arrangement for measuring quantities of air |
| 10/17/1991 | DE4012080A1 Verfahren zum aufbau von mikromechanischen sensoren A method for building of micro-mechanical sensors |
| 10/17/1991 | DE4011526A1 Vorrichtung zur ultraschall-durchflussmessung von stroemenden medien Apparatus for ultrasonic flow measurement by pouring media |
| 10/16/1991 | EP0452134A2 Diaphragm-type sensor |
| 10/15/1991 | US5056362 Strengthening a silicon micromachined mass air flow sensor in the region of its hot element |
| 10/08/1991 | US5056047 Method and device for measuring fluidic or calorimetric parameters |
| 10/08/1991 | US5054913 Method and apparatus for measuring the velocity of a fluid using analysis of young's fringes in speckle photography |
| 10/08/1991 | US5054325 Flow measurement by collision characterization |
| 10/03/1991 | WO1991014920A1 Integrated acousto-optical heterodyne interferometer |
| 10/02/1991 | EP0448751A1 Integrated acoustooptic heterodyne interferometer |
| 10/01/1991 | US5053630 Method and apparatus for determining the sign of the direction of a particle stream |
| 09/26/1991 | DE4108602A1 Volume flow measurement arrangement for e.g. gases - contains deflecting light conductor within flow tube having free end offset with respect to light detector |
| 09/26/1991 | DE4009284A1 Fluid meter - has rotatable valve wheel and ultrasonic transmitter-receiver for contactless measurement of rotation and direction |
| 09/25/1991 | EP0447597A1 Method and apparatus to avoid ambiguities in a pulse-doppler apparatus |
| 09/24/1991 | US5051750 Winds aloft estimation through radar observation of aircraft |
| 09/24/1991 | US5050429 Microbridge flow sensor |
| 09/19/1991 | WO1991013777A1 Shock absorber with doppler fluid velocity sensor |
| 09/19/1991 | DE4008348A1 Measuring concn. for size parameters for aerosol particles - involves charging with positive ions and encasing by moving gas shield |
| 09/18/1991 | EP0446496A2 Shielded magnetizing device and angular rate sensor in which such a device is used |
| 09/17/1991 | US5048951 Laser anemometer with several measurement directions |
| 09/17/1991 | US5048534 Method of and device for determining quantities characterizing the flow of a liquid in a vascular system |
| 09/17/1991 | US5048528 Alias suppression in pulsed doppler systems |
| 09/11/1991 | EP0446101A1 Laser system to measure the angle of attack of an aircraft |
| 09/11/1991 | EP0446023A1 Fluid flow measurement |
| 09/11/1991 | EP0445508A2 Anemometer |
| 09/11/1991 | EP0445441A1 Angular rate sensor |
| 09/10/1991 | US5047653 Device on board a moving vehicle to obtain signals representative of the relative speed of the vehicle with respect to an ambient fluid |
| 09/10/1991 | US5046840 Improvements in a system for determining atmospheric data relating to the movements of an airborne vehicle |
| 09/10/1991 | US5046500 Doppler flow velocity meter |
| 09/10/1991 | US5046360 Aerodynamic probe internal constructions |
| 09/04/1991 | EP0445005A2 Positionable optical bisensor for local binary phase measurements |
| 09/04/1991 | CN1054290A Turbine-medium flow monitor |
| 09/03/1991 | US5045699 Heat imaging camera with a cooled detector mosaic |
| 08/29/1991 | DE4006085A1 Heated solid state gas flow sensor combining compsn. measurement - by integration of reacting layer and heating track on the same substrate using thick-thin film techniques |
| 08/28/1991 | EP0442960A1 Optical determination of velocity |
| 08/27/1991 | US5043706 System and method for detecting bubbles in a flowing fluid |
| 08/27/1991 | CA1288151C Sensor and method for ullage level and flow detection |
| 08/24/1991 | CA2036448A1 Adjustable optical biprobe for local diphasic measurements |
| 08/22/1991 | DE4102920A1 Vortex frequency measuring device - for vortex detachment flowmeter, with frequency sensor in vortex zone, and resistive layer with passage openings |
| 08/20/1991 | US5040422 Procedure for flow measurement and equipment therefor |
| 08/20/1991 | US5040416 Electrical current flow sensor |
| 08/20/1991 | US5040415 Nonintrusive flow sensing system |
| 08/14/1991 | EP0441531A2 Method and system for digital measurement of acoustic burst travel time in a fluid medium |
| 08/14/1991 | EP0440796A1 Ultrasonic diagnostic apparatus |
| 08/14/1991 | CN2082865U Portable ultrasonic vortex street wind speed transducer |
| 08/13/1991 | US5038788 Ultrasonic Doppler diagnosis apparatus |
| 08/13/1991 | US5038610 Anemometer |
| 08/13/1991 | US5038609 Thermal type flow detecting apparatus |
| 08/13/1991 | US5038607 Wind speed and wind direction signal generator |
| 08/08/1991 | WO1991011789A1 Preassembled air data sensor and transducer |
| 08/06/1991 | US5036702 Air flow meter with compensation of second stage delay of thermal inertia |
| 07/30/1991 | US5035147 Method and system for digital measurement of acoustic burst travel time in a fluid medium |
| 07/25/1991 | WO1991010882A1 Mass-volume vortex flowmeter |
| 07/25/1991 | WO1991009283A3 Linearization of a sensing bridge circuit output |
| 07/24/1991 | CN1013306B Method and device for detecting fluid flow rate |
| 07/20/1991 | CA2034240A1 Mass-volume vortex flowmeter |
| 07/16/1991 | US5033030 Turbulence velocimetry technique |
| 07/16/1991 | US5032093 Nose cone with integral speedometer pick-up |
| 07/16/1991 | US5031467 Pulse echo technique for detecting fluid flow |
| 07/11/1991 | WO1991010143A1 System for measuring velocity field of fluid flow utilizing a laser-doppler spectral image converter |
| 07/11/1991 | DE4025952A1 Flow speed measurement appts. for phase flows in pipe system - using pairs of transducers with opposite phase voltages opposed by sensor electrode |
| 07/11/1991 | DE4000526A1 Ultrasonic anemometer for measuring wind's directional components - has source-receiver pairs opposite each other in annular holders measuring transition time variations |
| 07/10/1991 | EP0436125A1 Flowing velocity measurement system |
| 07/10/1991 | EP0436048A1 Oblique spaced antenna method and system for measuring atmospheric wind fields |
| 07/10/1991 | EP0224569B1 Family of aerodynamically compensated multiple static pressure tubes |
| 06/26/1991 | CN1052550A Aerodynamic probe internal constructions |
| 06/25/1991 | US5026001 Pitot static tube cover |
| 06/25/1991 | US5025661 Combination air data probe |
| 06/18/1991 | US5025160 Measurement of flow velocity and mass flowrate |
| 06/16/1991 | WO1991009274A1 Aerodynamic probe internal constructions |
| 06/16/1991 | CA2069110A1 Aerodynamic probe internal constructions |
| 06/12/1991 | CA2031944A1 Pulse echo technique for detecting fluid flow |
| 06/11/1991 | US5022274 High temperature particle velocity meter and associated method |
| 06/06/1991 | DE3939573A1 Sensor for measuring forces and derivable physical parameters - has light source connected to clamped end of elastically deflectable light conducting body, with position detector at other end |