| 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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| 11/18/1993 | EP0569728A1 Liquid supply apparatus |
| 11/18/1993 | DE4315519A1 Liquid level measurement arrangement, e.g. for vehicle engine oil - has magnetic float, normally-off reed switch and NTC thermistor in series with warning lamp. |
| 11/18/1993 | DE4215841A1 Controlling and preventing over-filling of tanker, esp. for rail transport supplied from lower-level storage - generates pulses for closing motor-driven valve in pressure line in dependence of fill state of tanker using sensors which develop signals relating to difference in pressure between valve open and closed states. |
| 11/18/1993 | DE4215363A1 Measuring level of horizontal boundary layer for level control of multiple phase mixture in flotation cell - directing ultrasound at predetermined angle in defined region and sensing components reflected from boundary between phases. |
| 11/16/1993 | US5262743 For reducing the reflection/attenuation of measurement energy |
| 11/16/1993 | US5262731 Liquid level detector |
| 11/16/1993 | US5262640 Window mounted optical moisture sensor having light pipes with distal ends |
| 11/16/1993 | US5261276 Fuel oil monitor system and method |
| 11/16/1993 | US5261274 Dynamic volumetric instrument gauge |
| 11/11/1993 | WO1993022623A1 Signal generating apparatus and method |
| 11/11/1993 | WO1993022235A1 Beer fob detection system |
| 11/11/1993 | DE4214835A1 Filling up of liquid container esp. motor vehicle oil tank - filling to level measured by dip stick, inserting suction stick and withdrawing fluid until air is detected by light barrier |
| 11/10/1993 | EP0568973A2 Level switch |
| 11/10/1993 | CN2145987Y Optical cable contactless stock level switch |
| 11/10/1993 | CN2145986Y Universal bicolor level gauge |
| 11/09/1993 | US5260910 High resolution acoustic pulse-echo ranging system |
| 11/09/1993 | US5260598 Device for separation of media into their components having means for detection and adjustment of the phase boundary |
| 11/09/1993 | US5259245 Fluid level measuring device with armless float |
| 11/04/1993 | DE4314144A1 Sample separator, esp. for blood samples after centrifuging - using electrical impedance between two suction nozzles or electrodes immersed in sample to detect boundary between components of sample |
| 11/03/1993 | EP0568508A1 Level sensor |
| 11/03/1993 | EP0567839A1 Electronic device for damping the fuel level indicator instrument in a vehicle tank |
| 11/03/1993 | EP0417259B1 Device for measuring volume mass and fluid level in situ |
| 11/02/1993 | US5258707 Method of noise rejection in a magnetostrictive position detector including determining a valid time range for propagation of sonic pulses over a reference distance |
| 11/02/1993 | US5258146 Method of and apparatus for measuring and controlling fluid level in stereolithography |
| 11/02/1993 | US5257911 Windscreen washer pump provided with level sensing device |
| 11/02/1993 | US5257539 For an oil pan |
| 10/27/1993 | EP0567382A1 Method for controlling the level of a fluid using a resistor element and circuit for carrying out the method |
| 10/27/1993 | CN2144818Y Magnetic liquid level display device |
| 10/26/1993 | US5257300 Digital anti-slosh system |
| 10/26/1993 | US5257090 Laser diode liquid-level/distance measurement |
| 10/26/1993 | US5255708 Method and apparatus for filling motorcycle forks |
| 10/26/1993 | CA1323684C Method for electromagnetic ultrasonic conversion for monitoring the fill level and bubble formation in enclosures containing liquid |
| 10/20/1993 | CN1022510C Laser material position monitor |
| 10/19/1993 | US5254311 Continuous multinominal analysis method and apparatus |
| 10/19/1993 | US5254101 Fluid presence indicator for rotatable syringe |
| 10/19/1993 | US5253522 Apparatus for determining fluid level and fluid density |
| 10/19/1993 | US5253521 Method of transmitting measured temperature and position parameters from a transducer |
| 10/19/1993 | US5253480 Automatic ice making machine |
| 10/14/1993 | WO1993020440A1 Automated continuous and random access analytical system and components thereof |
| 10/14/1993 | WO1993020412A1 Ultrasonic distance measuring device |
| 10/14/1993 | WO1993020393A1 Refrigerant shortage detecting method and apparatus for air-conditioners |
| 10/14/1993 | DE4212103A1 Water level indicator eg for hydroculture - has graduated flexible index,and increases vacuum due to impulsive pressure on diaphragm chamber to draw index into visible part of curved guide. |
| 10/14/1993 | DE4210705A1 Frequency=voltage converter for vibration-type level detector - has integrator with asymmetric charging time constants for forward and backward integration |
| 10/13/1993 | CN2143768Y Interfacial sensor |
| 10/13/1993 | CN2143767Y Measuring instrument for object position |
| 10/12/1993 | US5251488 Multiphase volume and flow test instrument |
| 10/12/1993 | US5251482 Low frequency acoustic fuel sensor |
| 10/12/1993 | CA1322900C Grain level indicator |
| 10/07/1993 | DE4210737A1 Fuel tank contents measurement - exposing liq. to stray field of capacitor plates mounted on flexible insulating material, and stuck directly on tank. |
| 10/06/1993 | EP0563809A2 A device for detecting the level of a liquid in a container |
| 10/06/1993 | EP0563468A1 Device for detecting the level of a liquid in a receptacle |
| 10/06/1993 | EP0563207A1 Device for indicating a certain liquid level in a container |
| 10/06/1993 | EP0563185A1 Liquid level indicator. |
| 10/05/1993 | US5250957 Method of detecting an ink residual quantity in an ink jet printer |
| 10/05/1993 | US5249866 Thermal properties measurement using a superconductor sensor |
| 10/05/1993 | US5249464 Sight flow apparatus with cartridge |
| 10/05/1993 | US5249463 Applying RF pulses |
| 10/05/1993 | US5249431 Residual coolant sensor for air conditioning system |
| 10/05/1993 | CA1322675C Thermoplastic sight monitor |
| 09/30/1993 | DE4240690A1 Ultrasonic transducer for contactless liquid level measurement - contains low impedance electroacoustic vibrator with frequency matched to container wall thickness |
| 09/30/1993 | DE4209961A1 Level measurement float control appts. eg for water tank of IC engine - contains transducer and float in chamber separate from container and communicating with monitored liq. through hole controlled by buoyant body |
| 09/29/1993 | CN2142964Y Annular instrument for determining high level of liquid |
| 09/28/1993 | US5248070 Volumetric measuring/dispensing device |
| 09/28/1993 | US5247833 Water level measuring apparatus |
| 09/28/1993 | US5247832 Vibrator-type level sensor |
| 09/23/1993 | DE4220642A1 Arrangement for automatic control of outflow of liquid of given density e.g. for compression refrigerator - contains housing with float operated denser liquid outlet opening and closing |
| 09/22/1993 | CN2142564Y Reed contact type liquid level signal sensor |
| 09/21/1993 | US5246045 Automatic refrigerant tank volume fill control apparatus |
| 09/21/1993 | US5246043 Device for detecting a liquid level and syphon device therefor |
| 09/21/1993 | US5245874 Total precipitation gauge with float sensor |
| 09/21/1993 | US5245873 Capacitance-type material level indicator and method of operation |
| 09/21/1993 | US5245870 Apparatus for measuring the fraction of liquid fuel in a fuel tank |
| 09/21/1993 | US5245869 High accuracy mass sensor for monitoring fluid quantity in storage tanks |
| 09/21/1993 | US5245834 Condensate tank of a dehumidifier |
| 09/16/1993 | WO1993018409A1 Dispensing device |
| 09/16/1993 | DE4207396A1 Probe eg for monitoring liquid water in steam chamber |
| 09/15/1993 | EP0560238A1 Probe for monitoring a liquid |
| 09/15/1993 | EP0559639A1 Surface separator and dispersion apparatus. |
| 09/15/1993 | CN2142194Y Magnetic attracting wall suspended level-sensing device |
| 09/14/1993 | US5245292 Method and apparatus for sensing a fluid handling |
| 09/14/1993 | US5244177 Hanger for suspending equipment in a storage tank |
| 09/14/1993 | US5243929 Tubular sanitary sight indicator |
| 09/14/1993 | US5243860 Liquid level measurement |
| 09/08/1993 | EP0559350A1 Non-full state detecting apparatus and method |
| 09/08/1993 | EP0558730A1 Sanitary sight indicator |
| 09/08/1993 | EP0558668A1 Level sensing |
| 09/08/1993 | CN2141891Y Flow monitor |
| 09/07/1993 | US5241753 Adjustable dip stick guide |
| 09/07/1993 | CA1321892C Tank gauge |
| 09/01/1993 | EP0558109A1 Liquid level measuring apparatus |
| 08/26/1993 | DE4205453A1 Measurement appts. for hydraulic flows and leaks in test object, e.g. in valves - contains capacitive sensor in vertical feed line, and equalisation chamber for hydraulic and pneumatic media |
| 08/25/1993 | EP0556678A2 Apparatus for monitoring liquid level |
| 08/25/1993 | EP0556336A1 Sample pipetting method |
| 08/25/1993 | CN2141075Y Static-pressure level indicator for sealed containers |
| 08/25/1993 | CN1075547A Automatic metering system for liquid in storage tank |
| 08/25/1993 | CN1075546A Indirect-conduction liquied level signal sensor and conducting liquid |
| 08/24/1993 | US5239285 Low salt level sensor |
| 08/24/1993 | US5239203 Common ground control switch for an irrigation system |
| 08/24/1993 | US5238369 Liquid level control with capacitive sensors |
| 08/24/1993 | US5237857 Down-hole liquid detecting apparatus |