| 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) |
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| 03/11/1992 | EP0474003A2 Electrolyte level control device for accumulator battery |
| 03/10/1992 | US5095274 Temperature-compensated apparatus for monitoring current having controlled sensitivity to supply voltage |
| 03/10/1992 | US5094102 Liquid level detection |
| 03/10/1992 | US5094008 Variable length dipstick |
| 03/10/1992 | CA1297156C Capacitance-type material level indicator |
| 03/10/1992 | CA1296922C Level sensor system |
| 03/05/1992 | WO1992003833A2 Thin-film resistance temperature device |
| 03/05/1992 | DE4129719A1 Simultaneous oil temp. and level measuring appts. - uses single phototransistor and light emitting diode with functional changeover by optical coupler for simultaneous display |
| 03/05/1992 | DE4101057A1 Immersion-tube level detector for vehicular engine sump - gives stabilised readings by damping oscillations of float having perforated flange at end of stem |
| 03/05/1992 | DE4027286A1 Dip stick for oil level in gearbox or crankshaft case - has measuring tongue overlapped by cleaning wiper axially slidable and held by stays |
| 03/04/1992 | EP0473366A1 Liquid level gage system |
| 03/04/1992 | EP0473295A2 Molten metal detection sensor |
| 03/04/1992 | EP0472694A1 Device for measuring the liquid level in a container, in particular in the fuel tank of a vehicle |
| 03/03/1992 | US5092230 Steam infusion float control |
| 03/03/1992 | US5092170 Measurement of mass of fluid in a container |
| 03/03/1992 | CA1296791C Method and apparatus for monitoring the level of the contents in a container |
| 02/26/1992 | EP0472363A2 An apparatus for determining the deviation in the level of liquid in a vessel |
| 02/26/1992 | CN2097416U Frequency discrimination type controller for water level |
| 02/26/1992 | CN2097399U Capacity sensor |
| 02/26/1992 | CN2097398U Digital double-integral capacity type device for measuring material level |
| 02/25/1992 | US5091863 Automatic fluid sampling and flow measuring apparatus and method |
| 02/25/1992 | US5091715 Leak detection and alarm system |
| 02/25/1992 | US5090242 Remote, pneumatic, continuous sensor of the liquid level in a vacuum tank |
| 02/25/1992 | US5090212 Cutoff switch for refrigerant container |
| 02/25/1992 | US5090128 Device for measuring or controlling change of level between several points |
| 02/25/1992 | CA1296200C Liquid level sensing device |
| 02/24/1992 | WO1992003718A1 A differential float means and sensor means incorporating same |
| 02/20/1992 | WO1992002789A1 Automatic tank gauging system with a quasi-static reference subsystem |
| 02/19/1992 | EP0470962A1 Flexible tube sonic waveguide for determining liquid level |
| 02/19/1992 | CN2096741U Water level instrument sensor |
| 02/19/1992 | CN2096740U Two-coloure liquid level gage |
| 02/18/1992 | US5088325 System for indicating a condition of material |
| 02/18/1992 | US5088324 Combined liquid-level and conductivity sensor |
| 02/18/1992 | US5088323 Actuator for visual indicator |
| 02/18/1992 | CA1296094C Filling level meter |
| 02/16/1992 | CA2049268A1 Apparatus for determining the deviation in the level of liquid in a vessel |
| 02/12/1992 | EP0470483A1 Method and probe for measuring the level with compensation of the permittivity |
| 02/12/1992 | EP0470269A1 Liquid level detecting apparatus and liquid level detecting method |
| 02/12/1992 | EP0470239A1 Fiber optic fuel and liquid gauge |
| 02/12/1992 | CN2096047U Metal liquid level tester for electromagnetic casting |
| 02/07/1992 | CA2048344A1 Tank monitoring system |
| 02/06/1992 | WO1992001420A1 Measurement cell for monitoring body fluids flowing out of a catheter |
| 02/06/1992 | DE4129696A1 Vehicle engine oil level limit measuring appts. - has light emitting diode and phototransistor in semi-open tube whereby diode is also used for system functional monitoring |
| 02/06/1992 | DE4023611A1 Liquid level sensor with pressure tight sealed immersion tube - has pressure sensor sealing tube top and float body exerting pressure greater than that of enclosed gas |
| 02/06/1992 | DE4023336A1 Geraet zur ueberwachung von aus einem katheter austretender koerperfluessigkeit Device for monitoring of a catheter exiting koerperfluessigkeit |
| 02/05/1992 | EP0469634A1 Pulse phase adjusting circuit for use with an electrostatic capacitor type sensor |
| 02/05/1992 | EP0469608A2 Level indicators, especially for beverage preparation devices |
| 02/05/1992 | EP0469409A2 Process and apparatus for proportioning liquids |
| 02/04/1992 | US5085078 Device for measuring fuel level in a motor vehicle tank |
| 02/04/1992 | US5085077 Ultrasonic liquid measuring device for use in storage tanks containing liquids having a non-uniform vapor density |
| 02/03/1992 | CA2048303A1 Liquid level indication, in particular for equipment for the beverage industry |
| 01/30/1992 | DE4023747A1 Diaphragm force or pressure transducer |
| 01/29/1992 | EP0468421A1 Oil level control device for the internal combustion engine of a lawn mower |
| 01/29/1992 | CN2094728U Dry spring switch type float ball liquid level sensor |
| 01/29/1992 | CN2094727U Electronic machine oil level measuring display device |
| 01/29/1992 | CN2094726U Computer pressure compensation fluviograph |
| 01/28/1992 | US5083470 Capacitive liquid level sensor |
| 01/28/1992 | US5083461 Low friction trunnion bearing and high pressure seal |
| 01/28/1992 | US5083460 Level sensor |
| 01/28/1992 | US5083459 Flow meter |
| 01/28/1992 | CA1294793C Sensor |
| 01/23/1992 | DE4112682A1 Filling level meter and monitor for incombustible liquid - includes immersed parts made from or coated with HDPE, polypropylene or U-PVC |
| 01/22/1992 | EP0467657A1 Low Frequency acoustic fuel sensor |
| 01/22/1992 | CN2094045U Safety finimeter for horizontal liquid round tanks |
| 01/22/1992 | CN2094044U Liquid level sensor of fibre-optic liquid level indicator |
| 01/22/1992 | CN2094043U No-medium measuring transducer |
| 01/22/1992 | CN2094042U Folding level pressure measuring sensor |
| 01/21/1992 | US5083115 Liquid-level detecting structure |
| 01/19/1992 | CA2021454A1 Liquid level monitor and indicator |
| 01/17/1992 | CA2046110A1 Low frequency acoustic fuel sensor |
| 01/15/1992 | EP0465878A2 Piezoceramic ultrasonic transducer |
| 01/15/1992 | CN2093386U Corrosion-resistant liquid level transducer |
| 01/15/1992 | CN2093385U Optical fiber sensing microcomputer controlling apparatus for boiler water level |
| 01/15/1992 | CN2093384U Double colour liquid level gauge |
| 01/14/1992 | US5079950 Level indicating in vehicle holding tanks |
| 01/13/1992 | CA2020980A1 Solar cellepowered moisture absence detection guage |
| 01/09/1992 | DE4117400A1 Level measurement arrangement esp. for engine oil - has motor driven piston in immersed tube and motor current detector |
| 01/09/1992 | DE4021598A1 Lever transducer for liquid level measurement - has damper for pendulum motion in form of electromagnetically operated brake operated at frequency between 100 and 200 Hz |
| 01/08/1992 | EP0464977A1 Liquid level detector with anti-corrosion and anti-fouling means |
| 01/08/1992 | EP0464529A2 Level measuring device |
| 01/08/1992 | EP0334876A4 Volumetric leak detection system for underground storage tanks and the like |
| 01/07/1992 | US5079570 Capillary reservoir binary ink level sensor |
| 01/07/1992 | US5078578 Pneumatic device for detecting hydrometric level |
| 01/07/1992 | US5078077 Indicator cap |
| 01/07/1992 | US5078010 Inductance level sensing device |
| 01/07/1992 | US5078006 Methods for detection of leaks in pressurized pipeline systems |
| 01/07/1992 | CA1293934C Fuel sender mount |
| 01/02/1992 | EP0463192A1 Method and device to measure fluid level in liquid containers |
| 01/02/1992 | DE4029385C1 Measuring molten metal level - by calculating difference between reference pressure of container and measured pressure using computer |
| 01/01/1992 | CN1057435A Method for measuring longitudinal-distribution and level of oil in storage tank and its measuring apparatus |
| 12/31/1991 | US5077527 Encoding system and method for differential capacitive transducer |
| 12/31/1991 | US5077482 Liquid gauge having an optical fiber with flexible membrane enclosure |
| 12/31/1991 | US5076397 Oil condition checking system for marine propulsion unit |
| 12/31/1991 | US5076101 Liquid level measurement system for tanks |
| 12/31/1991 | US5076100 Magnetostrictive transducer measuring system |
| 12/31/1991 | US5076066 Suction accumulator and flood control system therefor |
| 12/27/1991 | EP0462342A1 Method and apparatus for detecting the level of a substance |
| 12/24/1991 | US5075863 Distance measuring method and apparatus therefor |
| 12/24/1991 | US5075631 Encoding system and method for differential capacitive transducer |
| 12/24/1991 | US5074148 Resonance frequency liquid level sensor |