| Patents for G01P 13 - Indicating or recording presence or absence of movement; Indicating or recording of direction of movement (5,618) |
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| 04/30/1991 | US5011278 Optical correlator method and apparatus for particle image velocimetry processing |
| 04/25/1991 | DE3935586A1 Measuring appts. for direction of motion of point on vehicle - has opto-electrical transducer on vehicle or wheel hub and computer processing digitised raster |
| 04/24/1991 | EP0423394A1 Inductive movement sensor |
| 04/18/1991 | WO1991005114A1 Water discharging apparatus |
| 04/17/1991 | EP0422362A2 Pulse generator for a household appliance provided with control and display devices |
| 04/17/1991 | EP0422212A1 Optical correlator method and apparatus for particle image velocimetry processing |
| 04/17/1991 | EP0256124B1 Wind shear detection and alerting system |
| 04/16/1991 | US5007426 Method for depiction of moving parts in a body by nuclear magnetic resonance experiment |
| 04/09/1991 | US5006833 Sewer line restriction alarm placed in clean out plug |
| 04/09/1991 | CA1282737C2 Flow control system using boyle's law |
| 04/02/1991 | US5004981 Detector device for simultaneously detecting both the direction and number of rotations of rotating member |
| 03/26/1991 | US5002389 Pulsed fluorescence velocimeter |
| 03/26/1991 | US5002090 Flow detector |
| 03/21/1991 | DE3922164C1 Display glass joint for pipeline - has threaded section for washers for releasable fixing and preventing expansion or deformation from welding |
| 03/19/1991 | US5000566 Optical velocimeter |
| 03/19/1991 | US5000184 Directional component measurement by echography |
| 03/14/1991 | DE4026998A1 Monitor for continuous pressure ratio between two regions - contains temp. sensors before and after heater in connecting line |
| 03/13/1991 | EP0242396B1 Synchronous fm digital detector |
| 03/05/1991 | US4996875 Apparatus and method for evaluation of fluid flow within a combustion chamber |
| 02/21/1991 | DE3943469A1 Non-marking RPM measurement at smooth shafts - determining angular deviation alpha of reflector of external resonator of laser-sensor compared to vertical of optical axis |
| 02/21/1991 | DE3927351A1 Wind speed=direction measuring unit with transmitter block |
| 02/07/1991 | DE3925294A1 Monitoring arrangement for liquid flow in line - has spring loaded piston-like obstruction and damping chambers, and is unaffected by sudden flow changes |
| 01/31/1991 | DE3923854A1 Side-wind measuring system for motor vehicle |
| 01/29/1991 | US4988191 Electro-optical method and system for determining the direction of motion in double-exposure velocimetry by shifting an optical image field |
| 01/24/1991 | WO1991000986A1 Flow detection |
| 01/23/1991 | EP0408566A1 Process and circuit for a brake system with anti-lock and/or traction slip control. |
| 01/22/1991 | US4987542 Arrangement for determining the effects of cross winds on vehicles |
| 01/22/1991 | US4987301 Reflective optical encoder device with light beams applied as spats spaced by 2 predetermined pitch |
| 01/22/1991 | US4986782 Liquid flow detector system |
| 01/22/1991 | US4986122 Fluid velocity measurement instrument |
| 01/10/1991 | DE3921834A1 Wind pendulum switch - measures wind load independently of direction with externally mounted active switching element and continuous adjustment control rim, |
| 01/09/1991 | EP0406978A1 Motion sensor apparatus |
| 01/08/1991 | US4983917 Method for measuring flows in a nuclear magnetic resonance experiment |
| 01/08/1991 | CA1278843C Flow control system using boyle's law |
| 01/07/1991 | CA2020618A1 Motion sensor apparatus |
| 01/03/1991 | DE4018834A1 Arrangement for distinguishing between opposite movement directions - has inductive sensor of periodic magnetic asymmetries with pole shoes at varying separations |
| 01/03/1991 | DE3921231A1 Flow monitor, e.g. for buffer soln. in high pressure - LC has chamber with inlet, outlet and contact electrode arrangement |
| 01/02/1991 | EP0405792A2 Movement detection system |
| 01/02/1991 | EP0301063B1 Wind-vane with magnetic bearing |
| 01/01/1991 | US4981158 Non-contact control |
| 01/01/1991 | US4981040 Sight flow indication apparatus with multi-sealing protective arrangements |
| 12/31/1990 | CA2020213A1 Movement detection system |
| 12/27/1990 | EP0404657A1 Apparatus to determine the sense of movement of a mobile object |
| 12/25/1990 | US4979818 Apparatus for measuring movement of light scattering bodies in an object |
| 12/19/1990 | EP0402977A1 Device for determining the speed and direction of a flowing medium |
| 12/18/1990 | CA1277851C Laser doppler spectrometer for the statistical study of the behavior of microscopic organisms |
| 12/12/1990 | EP0402345A2 Speed and direction monitor for motor vehicles |
| 12/06/1990 | DE3917496A1 Level sensor with permanent magnet operating electrical switch - installed at lower end of vertical pipe sealed by non-magnetisable material against medium |
| 12/05/1990 | EP0400981A2 A null flow sensor |
| 12/05/1990 | CN2066987U Electronic detector for machine stop |
| 12/02/1990 | CA2018124A1 "null" flow sensor |
| 11/28/1990 | EP0398909A1 Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft. |
| 11/21/1990 | CN1010506B Speed detecting arrangement |
| 11/20/1990 | US4972332 Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft |
| 11/06/1990 | US4968879 Method and apparatus for measuring aircraft flight parameters |
| 11/01/1990 | WO1990013036A1 Optical correlator method and apparatus for particle image velocimetry processing |
| 10/31/1990 | EP0307709B1 Device for detecting the rotation and/or for measuring the rotation speed of a small dc motor with permanent or electro-magnets |
| 10/31/1990 | DE3935778A1 Mass measurer for flowing medium - has hot film air mass measurer with two hot films in flow measuring pipe esp. for intake air of IC engine in motor vehicle |
| 10/30/1990 | US4967072 Interferometric rotating condition detection apparatus |
| 10/16/1990 | US4963857 Translatable dual magnets |
| 10/09/1990 | US4962370 Off-center cap-level magnetic float sewer alarm |
| 10/03/1990 | EP0389709A1 Apparatus for measuring and controlling fluid flow across a boundary |
| 09/27/1990 | CA2010878A1 Apparatus for measuring and controlling fluid flow across a boundary |
| 09/26/1990 | EP0332690A4 Enhanced pressure measurement flow control system |
| 09/25/1990 | US4958524 Flow meter |
| 09/20/1990 | WO1990010876A1 Electro-optical method and system for determining the direction of motion in double-exposure velocimetry by shifting an optical image field |
| 09/19/1990 | EP0387710A2 Puls generator |
| 09/18/1990 | US4958248 Reflective tachometer/headwheel assembly for a rotary head scanner |
| 09/18/1990 | US4958077 Method and apparatus for displaying moving objects |
| 09/11/1990 | US4955785 Fan structure with flow responsive switch mechanism |
| 09/04/1990 | US4953402 Wind measuring system (anemorhumbometer) |
| 09/04/1990 | CA1273563A1 Method and device for detecting a fluid flow |
| 09/04/1990 | CA1273533A1 Fluid flow indicator |
| 08/07/1990 | US4947153 Apparatus for monitoring the flow of fluid from a metering pump |
| 08/07/1990 | US4945948 Sight flow indicator |
| 08/07/1990 | CA1272397A1 Method for measuring the direction and force of gaseous or liquid flows and probe for carrying out this method |
| 07/31/1990 | US4945344 Fluid flow sensor having light reflective slider |
| 07/31/1990 | CA1272156A1 Optical milk flow detector and vacuum shutoff for milker |
| 07/17/1990 | US4941348 Electromotive sensor |
| 07/05/1990 | DE3940832A1 Fibre optic flow monitor for multiple phase flows - contains fibre optical position filter acting as differential grid for flow contg. ferromagnetic impurities |
| 07/03/1990 | US4939756 Two-phase encoder circuit |
| 06/27/1990 | EP0375019A1 Device for detecting the movement of a part |
| 06/27/1990 | EP0374822A1 Pulsed fluorescence velocimeter and method for fluorescence measurement of velocity |
| 06/26/1990 | US4937558 Flow failure detector |
| 06/14/1990 | WO1990006517A1 Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft |
| 06/14/1990 | WO1990006504A1 Optoelectronic sensing device |
| 06/13/1990 | DE3841135A1 Measuring element |
| 06/12/1990 | US4933636 Self-aligning tachometer and method of manufacturing same |
| 06/12/1990 | US4932256 Heat transmission measuring instrument, in particular flow monitor |
| 06/09/1990 | CA2003708A1 Apparatus for determining the speed, angular position and direction of rotation of a rotatable shaft |
| 06/06/1990 | CN2058012U Passive running fault monitor |
| 06/05/1990 | US4931776 Fluid flow sensor with flexible vane |
| 06/05/1990 | US4930436 Selectively positionable weather vane and display for vertical post |
| 06/05/1990 | US4930343 In a paint spraybooth facility |
| 05/30/1990 | EP0370203A1 Acceleration pick-up sensor |
| 05/23/1990 | CA2003566A1 Respiration monitor |
| 05/22/1990 | US4927261 Method and apparatus for photographing a movement |
| 05/15/1990 | US4926037 Apparatus and method to control the precisional position of a light weight motor energized by radiant energy |
| 05/15/1990 | CA1269148A1 System and method for ice movement detection in determination of ice breakup |
| 05/10/1990 | DE3837390A1 Standstill sensor |