| 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) |
|---|
| 10/14/1981 | EP0037419A1 Sensor for measuring leakage |
| 10/13/1981 | CA1110729A1 Resistive fluid detecting means |
| 10/07/1981 | EP0037357A1 Device for measuring the levels of molten metal and slag in a smelting furnace during pig iron refining |
| 10/07/1981 | EP0037247A1 Cleaning device for use with a dip stick |
| 10/07/1981 | EP0036924A2 Process and apparatus for the production of phosphorus pentasulphide having a constant low reactivity |
| 10/06/1981 | US4293008 Ratio graduate for use with post-mix beverage dispenser |
| 10/06/1981 | US4292739 Liquid measure dip stick |
| 09/29/1981 | US4292620 Fuel level monitoring engine control and vehicle theft inhibiting device |
| 09/29/1981 | US4292530 Developer material level sensor |
| 09/29/1981 | US4291575 Liquid level monitor |
| 09/22/1981 | US4290537 Volume and temperature indicators for insulated air pot |
| 09/15/1981 | US4290067 Radiant energy profilometer |
| 09/15/1981 | US4290059 Liquid level alarm for remotely indicating when less than a predetermined quantity of fuel oil remains in a storage tank and method for installing the same |
| 09/15/1981 | US4289451 External tank level control system |
| 09/15/1981 | US4289028 Fuel quantity gauge |
| 09/15/1981 | US4289027 Aircraft fuel tester |
| 09/15/1981 | US4289026 Level indicating device |
| 09/09/1981 | EP0035318A1 Improvements in electroacoustic transducers |
| 09/08/1981 | US4287756 Stratified fluid interface recorder |
| 09/08/1981 | CA1108430A1 Optical measurement system |
| 09/01/1981 | US4287427 Liquid-level monitor |
| 09/01/1981 | US4286464 Optical fluid level monitor |
| 09/01/1981 | CA1108269A1 Molten metal level indication in receptacles |
| 09/01/1981 | CA1108265A1 Safety switch assemblies |
| 09/01/1981 | CA1108031A1 Water level control system |
| 08/26/1981 | EP0034537A1 Level indicating apparatus |
| 08/26/1981 | EP0034487A1 Oil level and flow sensing apparatus for vacuum pump service |
| 08/25/1981 | US4286208 Fluid interface detector |
| 08/25/1981 | US4285207 Air conditioning apparatus comprising refrigerant shortage sensor |
| 08/18/1981 | US4284951 Battery electrolyte level sensor |
| 08/18/1981 | US4284904 Encapsulated magnetically sensitive circuit elements for depth-indicating purposes or the like |
| 08/18/1981 | US4284878 Fluid level detector |
| 08/18/1981 | US4284343 Apparatus for the electric level control of a developing solution in a storage tank |
| 08/18/1981 | US4283945 Volume measuring apparatus |
| 08/18/1981 | CA1107374A1 Dual liquid level monitor |
| 08/11/1981 | US4283719 Liquid level sensing circuit |
| 08/11/1981 | US4282624 Oil field storage tank attachment for cleaning |
| 08/11/1981 | CA1106987A1 Gauging system providing remote readout of liquid levels in gasoline storage tanks |
| 08/11/1981 | CA1106935A1 Liquid level sensor |
| 08/11/1981 | CA1106707A1 Level indicator for frozen confection dispenser |
| 08/11/1981 | CA1106706A1 Position transmitter |
| 08/11/1981 | CA1106643A1 Apparatus for measuring liquid volumes |
| 08/05/1981 | EP0033308A1 Method of preventing the penetration of slags into a continuous casting mould during continuous casting, and device for carrying out the method |
| 08/04/1981 | US4281542 Shielding system for capacitance type fuel quantity gauge |
| 08/04/1981 | US4281534 Sensor for measuring leakage |
| 07/28/1981 | CA1106026A1 Capacitive means for measuring the level of a liquid |
| 07/21/1981 | US4280126 Liquid level detector |
| 07/21/1981 | US4279149 Process for measuring the level of metal in vessels, especially in continuous casting molds |
| 07/21/1981 | US4279148 Anti-clogging flume and structure for metering fluid flow |
| 07/21/1981 | US4279078 Fluid presence detector |
| 07/07/1981 | US4277773 Liquid level sensor |
| 07/07/1981 | US4277657 Apparatus for determining the quantity of particles present in a container |
| 07/07/1981 | US4276774 Method and apparatus for measuring the level of semi-solid material |
| 07/07/1981 | US4276694 Fluid level indicator (vent holes) |
| 07/07/1981 | CA1104697A1 Level control for continuous casting |
| 06/30/1981 | US4276536 Self-heating thermistor probe for low temperature applications |
| 06/30/1981 | US4276454 Water level sensor |
| 06/23/1981 | US4275382 Apparatus for monitoring and controlling vessels containing liquid |
| 06/23/1981 | US4275295 Limit and measurement value transmitter |
| 06/23/1981 | US4274705 Fiberoptic-fed fluid level sensor using a hemiellipsoidal optical element |
| 06/23/1981 | CA1103527A1 Indicator of amount of liquefied gas in bottle |
| 06/16/1981 | CA1103329A1 Sensor for determining level of a flowing liquid in a vessel |
| 06/16/1981 | CA1103052A1 Thermistor device for identifying an unknown fluid |
| 06/10/1981 | EP0030221A1 Water level that may be equipped with accessories |
| 06/03/1981 | EP0029485A1 Device for capacitive level measurement |
| 06/02/1981 | CA1102441A1 Method and apparatus for measuring the height of filling material on a surface, such as within a container |
| 06/02/1981 | CA1102404A1 Method of determining variations in the previously adjusted nominal distance between the facing surfaces of a colour selection electrode and a display window of a colour television display tube, and device for carrying out the method |
| 06/02/1981 | CA1102151A1 Optical gauge |
| 05/27/1981 | EP0029178A1 Device for sensing the level of liquid media |
| 05/27/1981 | EP0029091A2 Device for electrically checking the level of a liquid contained in a recipient |
| 05/26/1981 | US4270033 Brake-fluid level detector |
| 05/26/1981 | US4268953 Method of making an encapsulated magnetic-reed switch circuit element adapted for use in interconnected array |
| 05/20/1981 | EP0028807A1 Method and apparatus for measuring the volume of the contents of a closed container |
| 05/19/1981 | US4268839 Photo-tide level recorder |
| 05/19/1981 | US4268753 Level detection device for enclosed tanks |
| 05/13/1981 | EP0028399A2 Liquid indicator for ink containers |
| 05/12/1981 | US4266344 Dipstick alignment guide |
| 05/12/1981 | CA1100825A1 Liquid level indicating device |
| 05/06/1981 | EP0028114A2 Liquid level sensor |
| 05/05/1981 | US4266144 Detection means for multiple capacitive sensing devices |
| 05/05/1981 | US4265262 Fluent material level control system |
| 05/05/1981 | US4265114 Liquid level indicator for a reservoir |
| 05/05/1981 | CA1100329A1 Liquid level gauge for tanks |
| 04/28/1981 | US4264902 Moisture alarm |
| 04/28/1981 | US4264901 Moisture detecting and alarm device |
| 04/28/1981 | US4264788 Damped ultrasonic detection unit |
| 04/28/1981 | CA1100000A1 Liquid level indicating device for movably mounted dispenser tanks |
| 04/22/1981 | EP0027389A1 Non-destructive process for determining physical state of materials within sealed container |
| 04/21/1981 | US4263587 Liquid level control system |
| 04/21/1981 | US4262854 Level winding reel mechanism for a bin level indicator |
| 04/21/1981 | US4262535 Apparatus for metering or distributing the volume of liquids |
| 04/21/1981 | US4262531 Fluid-gauging methods and systems |
| 04/16/1981 | WO1981001055A1 Sensor for measuring leakage |
| 04/16/1981 | WO1981001054A1 Method for leakage measurement |
| 04/15/1981 | EP0027099A1 Refractive-index responsive light-signal system |
| 04/14/1981 | US4261397 Fill level control system for viscous, variable density fluid products |
| 04/07/1981 | US4260883 Optical measurement system |
| 04/07/1981 | US4259982 Resistive fluid detecting means |
| 04/07/1981 | US4259975 Stock tank gauger-level controller |
| 04/07/1981 | US4259865 Fluid-gauging systems |