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| Number | Title | Issue Date |
| 7882736 | Level measurement using a process vessel cage A process fluid level measurement system is configured to measure a level of at least one process fluid in a vessel. The vessel has a cage with at least one annular isolator located inside the cage. The at least one annular isolator has a band-shaped isolator diaphr... | 02/08/2011 |
| 7765867 | Transmitter for providing inventory or inventory transfer information on a product in a container A transmitter for providing inventory or inventory transfer information on industrial sites is described, for measurement of mass (M), weight (W), volume (V), level (L) and/or density (p) of a product (1) in a vessel (3) comprising: a level sensor (... | 08/03/2010 |
| 7721601 | Hydrogen storage tank and method of using A hydrogen storage tank for containing solid-state hydrogen storage media, and method for determining the hydrogen fill level in the tank. The tank has at least one compartment for storing the storage media, passages for transporting hydrogen gas to and from the com... | 05/25/2010 |
| 7681446 | Liquid container Provided is a liquid container having an outer surface and an interior container from which the level of liquid in the container is not visible; the liquid container having a detecting unit having a liquid amount detecting means and a liquid temperature detecting me... | 03/23/2010 |
| 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 |
| 7284428 | Sensor housing for use in a storage vessel A detection apparatus for use in a vessel for measuring a fluid includes a tubular connected to a housing containing sensors, wherein the housing includes a top, a bottom, and a hole disposed in the top of the housing. The housing containing sensors includes an oute... | 10/23/2007 |
| 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 |
| 7252431 | Water temperature monitoring apparatus An apparatus generally including a housing, a power source, a temperature sensor, a display and a circuit. The housing may have a bore adaptable to receive a flow of water. The power source may be operational for generating electricity and coupled to the housing. Th... | 08/07/2007 |
| 7226207 | Temperature gauge for use with sanitary conduit A standard industrial temperature gauge is adapted for a sanitary conduit that has been provided with a tubular stub for mounting the temperature gauge. A disk flange mates with an upper flange of the tubular stub. A aperture or passageway in the disk flange permits... | 06/05/2007 |
| 7219441 | Phreatic surface measurer terminal A terminal, for use with a phreatic surface measurer having a tape measure with at least one sensor at one end of the tape measure, includes a flexible protection element that substantially surrounds the tape measure, and a coupler between the flexible protection el... | 05/22/2007 |
| 7191072 | Pressure and temperature measurement of a piezo-resistive device using differential channel of a ratiometric analog to digital converter A temperature and pressure measuring circuit is provided. The circuit comprises an uncompensated pressure transducer, an analog-to-digital converter, a reference resistive device, and first and second switches. The transducer has variable resistive devices between f... | 03/13/2007 |
| 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 |
| 7080942 | Bimetal thermometer The bimetal thermometer according to the invention comprises a bimetal helix arranged inside a protective tube, one end thereof being attached to the protective tube and the other end thereof being connected to a pointer shaft to which a pointer arranged inside a ca... | 07/25/2006 |
| 7079967 | Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment An apparatus and method for detecting faults and providing diagnostic information in a refrigeration system comprising a microprocessor, a means for inputting information to the microprocessor, a means for outputting information from the microprocessor, and five sen... | 07/18/2006 |
| 7062967 | Fuel level sensor An apparatus and method are provided for determining the fuel level in a fuel tank. The apparatus includes an acoustic transducer arranged to transmit an acoustic signal and receive a reflected signal. A float remains buoyant at the surface of the fuel in the tank a... | 06/20/2006 |
| 6973793 | Estimating evaporator airflow in vapor compression cycle cooling equipment A method for determining airflow through an evaporator coil in a vapor compression cycle by measuring the moist air conditions entering and leaving the coil, and various temperatures and pressures in the refrigerant of the vapor compression cycle. The mass airflow r... | 12/13/2005 |
| 6959599 | Level detector for storage tanks for fluids A level detector for storage tanks for fluids comprises a microprocessor, a network of resistive elements connected in series or parallel, and a plurality of conductive elements between them, connected across a power source. The resistive elements have a high temper... | 11/01/2005 |
| 6959598 | Liquid level sensor for appliance and associated method A liquid level sensor for an appliance having a container in which liquid flows, and associated method. The sensor comprises a radio frequency oscillator and an antenna array connected to an input port of the oscillator. The antenna array comprises a longitudinal st... | 11/01/2005 |
| 6925872 | 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... | 08/09/2005 |
| 6923252 | Borehole sounding device with sealed depth and water level sensors A borehole device having proximal and distal ends comprises an enclosure at the proximal end for accepting an aircraft cable containing a plurality of insulated conductors from a remote position. A water sensing enclosure is sealingly attached to the enclosure and c... | 08/02/2005 |
| 6907780 | Fuel level sensor According to an exemplary embodiment, the present technique relates to a fuel sensor for determining operational fuel level (hnew) in a fuel tank (14). In the exemplary embodiment, an isolated airspace (44) is created. By monitoring the pres... | 06/21/2005 |
| 6904800 | Low-water cut-off system A low-water cut-off system [A] determines if fluid [W] within a boiler [16] or other enclosure drops below a predetermined level within the enclosure. A signal generator introduces a signal into the enclosure so that the signal is present for sensing at the p... | 06/14/2005 |
| 6889546 | Fuel tank interface assembly A fuel tank interface assembly is provided. The assembly provides interface and control to a plurality of different types of components. Some of the components may be situated inside the tank. A connector is sealingly mounted through a single opening in the tank and... | 05/10/2005 |
| 6847291 | Apparatus for detection of water level and temperature in a bathing appliance An apparatus operable in a wet environment for detecting the presence or absence of water in a non-conductive vessel, by measuring changes in dielectric constant and detecting the temperature of water in same vessel. A conductive element coupled to a sensing and swi... | 01/25/2005 |
| 6662429 | Device for measuring the filling level in a container using thermoelements In a device for measuring the filling level, thermoelements (20) are used which are disposed on a sheet-shaped support (25). The thermoelements (20) consist of two different materials and are disposed in two rows (71, 72) placed side by side. Two adjacent... | 12/16/2003 |
| 6568266 | Pressure housing for in-water pressure based systems The present invention relates to a pressure housing for in-water pressure based systems and to a method for improving the life of the transducers and electronics of underwater systems by maintaining a humidity-free and clean environment around them by avo... | 05/27/2003 |
| 6443000 | Measuring stick and thermometer A measuring device for calculating the depth of a liquid in a container comprises a dipstick, a plurality of indicia on the dipstick and a thermometer on the elongate member which measures the temperature of the liquid in the container such that the tempe... | 09/03/2002 |
| 6431750 | Flexible temperature sensing probe A lightweight elongate flexible temperature probe includes several temperature sensors embedded inside multiple layers of a thin film polyimide or polyester in which two of the layers are thin film copper etched to form conductors to the sensors. The cond... | 08/13/2002 |
| 6429778 | Water-monitoring apparatus capable of auto-tracing water level and non-contact signal relay for the same A water-monitoring apparatus includes a frame installed by water. A reel is mounted on the frame. A cable including lower and upper ends is wound on the reel. A buoy is connected with the cable. At least one sensor is used to detect a water quality parame... | 08/06/2002 |
| 6202486 | Analog liquid level sensor A sensor for determining the location of the surface of liquid in a container, includes: a hollow tubular stainless steel probe inserted into said container, said probe having one portion arranged above the surface of the liquid and having another portion... | 03/20/2001 |
| 6186005 | Surface wave liquid sensor A liquid sensor has comb-shaped electrodes, applied to a piezoelectric substrate, as interdigital transducers for generating an electroacoustic wave from a transmitting transducer to a receiving transducer. The number of finger pairs of the interdigital t... | 02/13/2001 |
| 6157894 | Liquid gauging using sensor fusion and data fusion Liquid gauging system for liquid in a container includes a plurality of sensors; each of the sensors measuring a respective parameter of the liquid in the container and producing a sensor output related to its measured parameter; there being at least two ... | 12/05/2000 |
| 6065867 | Method and device for measuring the temperature and the level of the molten electrolysis bath in cells for aluminum production A method for measuring temperature and electrolyte level of a molten electrolysis bath in a cell for production of aluminum by electrolysis of alumina includes the steps of: (a) piercing the crust of a solidified bath with a crust breaker and immersing in... | 05/23/2000 |
| 6058775 | Integrated liquid level and auxiliary sensor system and method A magnetostrictive liquid level probe in a double-walled liquid container develops liquid level data and external sensors in the space between the walls respond to the presence of liquid leaked into the space from inside or outside the container. Other se... | 05/09/2000 |
| 6037873 | Bathing basin monitoring system A bathing basin monitoring system is provided including a housing with a couple adapted for securing to a bathing basin. A speaker is mounted on the housing for emitting audio signals. Also included is a moisture/temperature sensor assembly having a moist... | 03/14/2000 |
| 5947372 | Combined fuel level monitor and thermostat The present invention is directed to a combination of a thermostat, especially for controlling the heating of a dwelling, and a level indicator for displaying the level of liquid fuel (such as home heating oil) in a storage tank that is burned for heating... | 09/07/1999 |
| 5834641 | Depth gauge The invention relates to a depth gauge for use in angling or sports fishery. The depth of a body of water may be measured therewith from its surface to its bottom, and/or the depth and the size of strata of water of different temperatures for the purpose ... | 11/10/1998 |
| 5798698 | Method of monitoring the level of a liquid in a container In cases of application where the critical temperature occurs or could occur, safe monitoring of the level of the liquid was not possible heretofore because the physical properties of the liquid and of the gaseous medium present above the latter in the co... | 08/25/1998 |
| 5747689 | Fluid level sensing system In one embodiment of the present invention, a method for measuring fluid level use a sensor comprising a first plate having continuous electrically conductive material and a second plate having electrically conductive material disposed in segments, the el... | 05/05/1998 |
| 5644088 | Port forward sensor for liquid level gauge or flowmeter An improved flowmeter sensor for measuring the level of liquid flowing in a conduit, pipe or open channel, characterized by an initially air-filled pressure transmitting passage which affords communication between a pressure port contained in the bottom o... | 07/01/1997 |
