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| Number | Title | Issue Date |
| 7966878 | Method for measuring liquid cryogen level using a level probe A method of measuring a level of liquid cryogen, comprising the steps of immersing a liquid cryogen level probe in a liquid cryogen, applying a propagation current to the heater (26) to induce quench in at least an adjacent part of the superconductive materia... | 06/28/2011 |
| 7930937 | Detection device making it possible to measure the quantity of hot water remaining in a storage reservoir The detection device for measuring the quantity of hot water remaining inside a storage reservoir and more particularly inside a tank (2) of a water heater (3, 30), comprises a capillary tube (10) containing a heat-carrying fluid which is placed... | 04/26/2011 |
| 7926345 | Apparatus for measuring a filling level An apparatus for measuring the filling level in a liquid vessel, in particular in a reactor vessel of a nuclear-engineering plant, with a plurality of elongate, spaced-apart measurement tubes. Each measurement tube has a number of thermocouples which are distributed... | 04/19/2011 |
| 7900510 | Marine trolling sensor A method and apparatus to implement a trolling device. The trolling device can assist maritime sports fishermen in defining the actual water depth and/or water temperature of the location at which a lure is situated in troll. The readings from the device enable an a... | 03/08/2011 |
| 7841235 | Superconductive level indicator for liquid hydrogen and liquid neon, and measuring method for liquid level measurement The invention relates to a superconducting level measuring apparatus for liquid hydrogen in liquid hydrogen vessels, in particular vehicular tanks, a superconductor (1) based on magnesium diboride MgB2 being arranged vertically or inclinedly to the... | 11/30/2010 |
| 7836761 | Immersion thermowell for temperature and water level sensing An immersion thermowell with an electrically isolated sensor tube allows for ready conduction of heat energy to a temperature sensor probe. An electrical signal originating on the fluid container chassis can be conducted into the water, which can then be conducted t... | 11/23/2010 |
| 7712363 | Liquid state detecting sensor A liquid state detecting sensor is provided in which a level detecting unit for detecting the level of a liquid and a concentration detecting unit for detecting the concentration of a particular component contained in the liquid are integrated. In a liquid st... | 05/11/2010 |
| 7698939 | Thermistor-based fuel sensor A system for sensing a fuel level includes sensors that sense the fuel level and a voltage source that applies a constant voltage to the sensors for a predetermined time. The system includes a control module that measures outputs of the sensors at a beginning and at... | 04/20/2010 |
| 7596998 | Liquid level sensor using thick film substrate In many applications, where the level of a liquid needs to be monitored (and possibly controlled), it is not necessary to provide a continuous (analog) liquid level signal, but limit sensing to one (or two) discrete levels over a small level range. In this case, a c... | 10/06/2009 |
| 7523661 | Methods and systems for liquid volumetric measurement An apparatus for measuring a volume of liquid within a vessel is described. The apparatus includes a plurality of devices each having electrical properties that are dependent on a temperature of the device, a constant current source coupled to the plurality of devic... | 04/28/2009 |
| 7472594 | Fluid level indication system and technique A technique that is usable with a well includes disposing a distributed temperature sensor in a conduit that traverses a region of the well. The region contains at least two different well fluid layers. The technique includes circulating a fluid through the conduit ... | 01/06/2009 |
| 7418788 | Temperature sensitive dipstick A fluid level indicator for determining the level of fluid in a container includes a dipstick that is entered into the fluid in the container and withdrawn from the fluid, a billet of thermochromic material having a reference temperature, a billet length extending a... | 09/02/2008 |
| 7401625 | System for supplying liquefied gas to a combustion engine with a minimum liquefied-gas level detector To detect the volume of gas remaining in a gas bottle or a fixed tank of a system for supplying liquefied gas as fuel for a combustion engine, a positive temperature coefficient (or PTC) probe (16) is placed in the gas feed line (12) between the gas so... | 07/22/2008 |
| 7392691 | Method and apparatus for detecting the level of a liquid A system for determining the position of a gas/liquid interface of a fluid in a tank having a probe and a controller. The probe has silicon diodes arranged linearly on a substrate. The controller applies power to each of the silicon diodes to make a determination of... | 07/01/2008 |
| 7347225 | Highly flexible multistructure tube A multi-structure pipe intended to transport a fluid, used in particular in oil production, including a first hollow and closed tubular structure having a set of substantially circumferential slits, each slit extending on an arc of more than 180° and defining a ten... | 03/25/2008 |
| 7334471 | Liquid sensor and ice detector An improved apparatus and a method of measuring and interpreting reliably, simply and accurately the information on continuous liquid level, liquid temperature and other liquid properties within a vessel. The apparatus is suited for economical manufacturing and coul... | 02/26/2008 |
| 7318673 | Temperature control system for food items The invention relates to a control system of the chilling process of the temperature of food items at values near but above 0° C. that prevents surface freezing of a food item. The surface freezing can be foreseen due to a mathematical relationship that is a functi... | 01/15/2008 |
| 7315788 | Computer program for continuously monitoring a fluid storage system using synchronized sensors A computer readable medium with a plurality of computer instructions for causing the processor to monitor and regulate a fluid storage system is disclosed. Computer instructions are used for instructing the processor to synchronously collect data using a detection a... | 01/01/2008 |
| 7302846 | Temperature-sensing device for determining the level of a fluid The present invention deals with determining the level of fluid in a container. Typically, a beverage container containing a liquid will absorb heat energy from the surrounding environment at a greater rate than a gaseous component in the headspace of the beverage c... | 12/04/2007 |
| 7287426 | Liquid level indicators A liquid level indicator, suitable for determining the level of a volatile liquid within a container, includes temperature sensors spaced vertically apart from each other. A processor processes the outputs of the temperature sensors and produces an indication, such ... | 10/30/2007 |
| 7284427 | Self-calibrating liquid level transmitter The present disclosure generally relates to a capacitance sensing apparatus equipped with self-calibrating capacity and method of use thereof. The disclosure contemplates the determination using a secondary means of precise fluid levels according to five possible em... | 10/23/2007 |
| 7275429 | Mechanical self-cleaning probe via bi-metallic or shape memory A conductance probe is provided for adapting in a device having a container for holding a fluid therein. The a conductance probe is installed therein for providing a conductance signal indicating whether it is in contact with the fluid. The conductance probe feature... | 10/02/2007 |
| 7258483 | Device for measuring the level and/or the temperature in a container A device for measuring at least one of a level and a temperature of a liquid in a container includes a resistor arrangement adapted to be immersed in the liquid. An immersed length of the resistor arrangement in the liquid corresponds to the level of the liquid in t... | 08/21/2007 |
| 7254983 | Fuel gauge for hydrogen storage media A hydrogen gas storage container has a canister with at least one outlet opening for charging and discharging gas, the canister enclosing a metal hydride capable of absorbing and desorbing hydrogen gas and a gauge for measuring the capacity of hydrogen remaining wit... | 08/14/2007 |
| 7247243 | Method and device for detecting an accumulation of sand in a separator vessel A separator device including a vessel for separating water from oil. The separator device is provided with a measurer for measuring the temperature of the wall of the vessel. ... | 07/24/2007 |
| 7246662 | Systems and methods for controlling flow control devices A device for determining a location of an interface between a first fluid and second fluid includes a non-mechanical sensor that measures a selected parameter of interest relating to the fluid surrounding the sensor (“the surrounding fluid”) and a processor for ... | 07/24/2007 |
| 7233151 | Apparatus and method for diagnosing failure of fuel level sensors A method of diagnosing failure of fuel level sensors includes a first measuring step of measuring voltages from first and second failure detection terminals; if the voltage is higher than a reference, diagnosing the voltage as “high,” and if the voltage is lower... | 06/19/2007 |
| 7227473 | Thermal sensor A thermal sensor is provided, which is distinguished in that it includes means for removing a deposit on a sensing element of the sensor. In addition, means for detecting the deposit may be provided. The means for removing the deposit are realized by a trigger circu... | 06/05/2007 |
| 7219974 | Measurement of fluid continuity in a fluid carrying member In an inkjet printer using ink reservoirs located physically remote from the print heads, tubes are used to deliver ink from the ink reservoirs to the print heads. Air initially present within the tubes can interfere with the proper operation of the print heads and ... | 05/22/2007 |
| 7191605 | Floating loop method for cooling integrated motors and inverters using hot liquid refrigerant A method for cooling vehicle components using the vehicle air conditioning system comprising the steps of: tapping the hot liquid refrigerant of said air conditioning system, flooding a heat exchanger in the vehicle component with said hot liquid refrigerant, evapor... | 03/20/2007 |
| 7181965 | Self-heated liquid level sensor A liquid level sensor comprising a thermistor probe and a power source connected to the thermistor probe to heat the thermistor probe. A cover encases the thermistor probe and includes openings allowing liquid to enter and exit an interior of the cover and contact t... | 02/27/2007 |
| 7159456 | Level indicator for liquid hydrogen tank A liquid hydrogen tank assembly that employs a level sensor inductively coupled through the tank walls so as to minimize one conductive heat path through the tank walls. The tank assembly includes an inner tank and an outer tank having a vacuum layer therebetween to... | 01/09/2007 |
| 7146854 | Methods and apparatus for media level measurement Representative embodiments provide for a media level measurement apparatus, including a sensor to provide an ambient temperature signal, a controller, and a source configured to provide an electrical current. Also included are a thermistor device configured to provi... | 12/12/2006 |
| 7117904 | Device for measuring the level of a fuel tank A device for measuring the filling level of a fuel tank, in particular for motor vehicles, having two openings for installation of a filling connection and a pump unit, and a film sensor provided with an electric connecting cable which can be connected to a display ... | 10/10/2006 |
| 7103965 | Method of making chip resistor The invention relates to a method of making a chip resistor using a material substrate for which are set a plurality of first cutting lines extending in a first direction and a plurality of second cutting lines extending in a second direction perpendicular to the fi... | 09/12/2006 |
| 7104502 | Ice detector for improved ice detection at near freezing condition An ice detector for providing a signal indicating ice formation includes a probe protruding into an airflow. The probe extends into the airflow from a strut. The strut has one or more features which allow the probe to accrete ice at a higher temperature than would c... | 09/12/2006 |
| 7073404 | Method and device for detecting accumulations of solid material A method and device for detecting an accumulation of a solid material in a vessel that contains at least one fluid phase. The device includes an electric conductor element that is positioned in a region inside the vessel where the accumulation is likely to occur, th... | 07/11/2006 |
| 7069781 | Stillwell apparatus This invention involves a new housing for a liquid level detection device. More particularly, the new stillwell apparatus comprises, at least one tubular section, a means for extending the length of the stillwell, a conduit for delivering a cleansing solution... | 07/04/2006 |
| 7062965 | Resistive level sensor for cryo-liquid gas tanks The present invention provides a probe having a resistance that varies with temperature and is operable to determine the quantity of a fluid, such as hydrogen, in a storage tank, such as a cryogenic storage tank. The probe relies upon differing heat transfer rates f... | 06/20/2006 |
| 7043967 | Sensor device for monitoring the condition of a fluid and a method of using the same The present invention is a compact apparatus and method that provides an efficient manner for monitoring the condition and level of a functional fluid directly in operating equipment. A sensor device is provided that includes a plurality of liquid sensors and a plur... | 05/16/2006 |
