| Patents for G01F 23 - Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm (31,056) |
|---|
| 06/19/1990 | US4934186 For measuring variations of the fluid level depth within a well bore |
| 06/13/1990 | EP0372909A2 Master cylinder hydraulic reservoirs |
| 06/13/1990 | EP0372700A1 A fluid level monitor |
| 06/13/1990 | EP0372631A2 A method and system for measuring a vertical density profile of a fluid |
| 06/13/1990 | EP0372089A1 Method and device for determining the quantity of milk extracted from one cow |
| 06/13/1990 | CN1042985A Level measuring instrument |
| 06/12/1990 | US4933915 Method of indicating the time of an acoustic pulse and a device for carrying out the method |
| 06/12/1990 | US4933833 Measurement and control system |
| 06/06/1990 | EP0371279A1 Universal fuel sender |
| 06/05/1990 | US4931764 Low wear resistor card for use in a liquid fuel sender circuit |
| 06/05/1990 | CA1269960A1 Liquid delivery nozzle |
| 05/31/1990 | DE3913730A1 Fill level monitor for liquid in container - has light receiver at illuminated monitored level with evaluation device detecting intensity regions |
| 05/30/1990 | EP0370765A2 Ink jet head cartridge with a residual-ink detector |
| 05/30/1990 | EP0370604A1 Method and apparatus for monitoring the level of the contents in a container |
| 05/30/1990 | CN2057748U Horizontal circular liquid receiver capacity meter |
| 05/29/1990 | US4929930 Liquid level controller utilizing the rate of change of a thermocouple |
| 05/29/1990 | US4929829 Method for detecting flooding of a surface |
| 05/29/1990 | US4928657 In-tank fuel reservoir with fuel level sensor |
| 05/29/1990 | US4928526 Universal fuel sender |
| 05/29/1990 | US4928525 Sonic tank inventory control system and method |
| 05/23/1990 | EP0369260A2 Liquid level sender with linear float |
| 05/23/1990 | EP0120852B1 Fuel gaging system |
| 05/23/1990 | DE3931635A1 Automobile fuel level measuring system |
| 05/23/1990 | DE3839363A1 Method and device for wiping and cleaning oil dipsticks for internal combustion engines and/or machines |
| 05/22/1990 | US4928006 Fluid coupled fiber optic sensor |
| 05/22/1990 | CA1269254A1 Sensing probe for sludge detectors |
| 05/16/1990 | EP0367868A1 Detection of the surface of a liquid or foam |
| 05/16/1990 | EP0367786A1 Optical liquid level sensor |
| 05/15/1990 | US4924704 Fuel sender assembly requiring no calibration and having reduced wear |
| 05/15/1990 | US4924703 Tank-level alarm control system |
| 05/15/1990 | US4924702 Liquid level sensor |
| 05/15/1990 | US4924700 Apparatus for measuring storage parameters such as level and temperature of liquids or fluids of different densities in a tank |
| 05/15/1990 | CA1269007A1 Monitor for liquid level and urine flow |
| 05/09/1990 | CN2056995U Speculam body with internal channel |
| 05/08/1990 | US4924221 Remote oil tank display apparatus |
| 05/08/1990 | US4923489 Liquid level controller |
| 05/08/1990 | CA1268814A1 Apparatus and methods for fluid level sensing |
| 05/02/1990 | CN2056750U Optical fibre automatic balance liquid level gage |
| 05/01/1990 | US4922234 Sewer alarm |
| 05/01/1990 | US4922226 Water level and temperature detector alarm device |
| 05/01/1990 | US4921129 Liquid dispensing module |
| 05/01/1990 | US4921071 Marine stern drive with improved fluid inspection reservoir |
| 05/01/1990 | US4920936 Marine outboard drive with oil tank draw tube and indicator |
| 05/01/1990 | US4920798 Liquid level sender with linear float |
| 05/01/1990 | US4920797 For providing an electrical output |
| 05/01/1990 | US4920796 Tank level meter |
| 04/25/1990 | EP0364577A1 Disconnection detection apparatus for lamps |
| 04/25/1990 | CN1041654A Distance measuring method and apparatus therefor |
| 04/24/1990 | US4920336 Method and apparatus for monitoring the level of the contents in a container |
| 04/19/1990 | DE3835483A1 Motor vehicle instruments, in particular for a fuel indicator |
| 04/19/1990 | DE3835406A1 Vorrichtung zum messen eines fuellstandes Device for measuring a fill level |
| 04/19/1990 | DE3834986A1 Device for the continuous determination of the filling volume of liquids in containers, especially in cylindrical containers installed lying down |
| 04/18/1990 | EP0363695A1 Sensor for determining low speed currents in a pipe section |
| 04/18/1990 | CN1007618B Liquid delivery nozzle |
| 04/17/1990 | US4918619 Multiplexed junction probe for fuel gaging system and system containing same |
| 04/17/1990 | US4916950 Diaphragm gauge for stand-alone liquid storage tanks |
| 04/12/1990 | DE3931203A1 Level indicator for liquid in drink container - contains electrodes and PNP circuit detecting change in resistance when electrodes contact liquid |
| 04/12/1990 | DE3833896A1 Frequency difference evaluation |
| 04/11/1990 | EP0362992A2 Distance measuring method and apparatus therefor |
| 04/11/1990 | EP0362618A2 Arrangement for measuring the oil level in the crankcase sump of an internal-combustion engine |
| 04/11/1990 | CN2055930U Transmission-reflection double colour water-level gauge |
| 04/11/1990 | CN1041219A Level detecting method for liquid chlorine and its special calibrating device |
| 04/10/1990 | US4914962 Vibrating strip transducer |
| 04/10/1990 | US4914948 Apparatus for monitoring burden distribution in furnace |
| 04/05/1990 | WO1990003557A1 Vibrating strip transducer |
| 04/05/1990 | WO1990003255A1 Recoating of stereolithographic layers |
| 04/04/1990 | EP0361847A2 Recoating of stereolithographic layers |
| 04/04/1990 | EP0361023A1 Liquid-level measuring apparatus |
| 04/03/1990 | US4914384 Magnetic gage driver circuit |
| 04/03/1990 | US4912977 Device for position determination of transition zones between at least two different enclosing media |
| 04/03/1990 | US4912976 Liquid level sensing apparatus |
| 03/28/1990 | EP0360449A2 Acoustic transducing arrangements and methods |
| 03/28/1990 | EP0360444A1 Fuel level sensor with buried conductor |
| 03/28/1990 | EP0360405A2 Two wire coolant level sensor |
| 03/28/1990 | CN2055250U Press type stuff level sensor |
| 03/28/1990 | CN2055249U Dual light channel refraction type bicolour liquid level meter |
| 03/27/1990 | US4912686 Sensor apparatus |
| 03/27/1990 | US4912646 Method for detecting the fuel level in the tank of a motor vehicle |
| 03/27/1990 | US4912407 Non-contacting inductively coupled displacement sensor system for detecting levels of conductive, non-magnetic liquids, and method of detecting levels of such liquids |
| 03/27/1990 | US4911011 Gauge with magnetically driven voltage divider |
| 03/27/1990 | US4910878 Suspended-cable apparatus for measuring level of material in a storage vessel |
| 03/27/1990 | CA1267203A1 Ice bin level sensor |
| 03/22/1990 | WO1990002962A1 Device for measuring activity and volume of radioactive liquids |
| 03/20/1990 | US4910495 Dipstick with automatic warning device |
| 03/20/1990 | US4909080 Ultrasonic level gauge |
| 03/14/1990 | EP0357636A1 A measuring instrument, preferably for watercraft |
| 03/14/1990 | CN2054535U Multipurpose liquidometer |
| 03/14/1990 | CN2054534U Month recording hydrological gauge |
| 03/14/1990 | CN2054533U Self-closing liquid level indicator |
| 03/13/1990 | US4908783 Apparatus and method for determining liquid levels |
| 03/13/1990 | US4908776 Spacecraft fuel measurement |
| 03/13/1990 | US4907451 Liquid level indicating device |
| 03/13/1990 | CA1266589A1 Diaphragm operated switch type bin level sensor |
| 03/08/1990 | WO1990002319A1 Coating-responsive material condition monitoring system |
| 03/08/1990 | DE3921004A1 Checking functionability of level indicator or limiter sensor - using injector pump driven by gas or air to feed liquid to sensor under realistic conditions |
| 03/08/1990 | DE3828520A1 Extended measuring lead |
| 03/08/1990 | DE3826456C1 Bag arrangement |
| 03/07/1990 | EP0356505A1 Magnetic position sensor |
| 03/06/1990 | US4906845 Optical sensor for detecting liquid medium |
| 03/01/1990 | DE3921041A1 Vorrichtung zum anzeigen des beladungszustandes eines geschlossenen behaelters Device to display the load state of a closed container |