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| Number | Title | Issue Date |
| 8179272 | Tank fluid level monitor and refill indicator A device and system for monitoring a fluid level within a tank and for indicating when the fluid level within the tank has dropped below a predetermined minimum level. The device includes a strobe light, which is switched on when a sensor determines that the fluid l... | 05/15/2012 |
| 8159358 | Apparatus and method for storage tank hatch monitoring in an inventory management system A method includes receiving information associated with a level of material in a tank, where the tank has a hatch. The method also includes determining whether the level of material in the tank experiences a specified variation within a critical zone associated with... | 04/17/2012 |
| 8120500 | Acoustic fluid presence/absence detection An acoustic sensor detects presence and/or absence of fluid in a fluid delivery medium. The acoustic sensor detects fluid absence based on the difference of the speed of sound between air and a fluid. For example, the acoustic sensor may detect fluid absence based o... | 02/21/2012 |
| 8044811 | Sensing device and method The invention relates to a method and sensing device capable of determining a temperature of a liquid and an electrical conductivity of the liquid at the temperature. The sensing device comprises at least one temperature sensor for providing temperature measurement ... | 10/25/2011 |
| 8004415 | Liquid exposure detection Methods, systems and program products are provided for monitoring an article for fluid exposure. A plurality of liquid sensors is incorporated into an article beneath an outer layer in a furnishing installation. In response to a fluid-detected or no-fluid-detected s... | 08/23/2011 |
| RE42386 | Water softener monitoring system A system for monitoring the level or amount of a material within a container is provided. The system includes a detection mechanism that can be a direct detection mechanism or any of a number of indirect detection mechanisms. When the detection mechanism senses an u... | 05/24/2011 |
| 7746237 | Wastewater fluid level sensing and control system A wastewater fluid level sensing and control system is provided. The system comprises a control panel, a reservoir, at least one pump and a fluid level sensing device. The control panel comprises a housing and user interface input and output devices for use with con... | 06/29/2010 |
| 7671753 | Slurry monitoring system and method System and method are disclosed for monitoring slurry from a central location and replenishing the slurry as needed. The method/system allows a slurry supplier to track various properties of the slurry, as well as monitor various aspects of the slurry storage and de... | 03/02/2010 |
| 7557722 | Enclosure for a wastewater fluid level sensing and control system An enclosure for a wastewater fluid level sensing and control system is provided. The enclosure for a control panel of the system may comprise a housing and a non-opaque door. Audible and/or visible alarm devices may be mounted within an interior space formed when t... | 07/07/2009 |
| 7492272 | High liquid alarm system A high liquid alarm system for use in detecting the presence of water and oil in water present in a confined space is disclosed. In one implementation, the system includes an optical sensor capable of detecting water at a certain level, a sensing device capable of d... | 02/17/2009 |
| 7471207 | Wastewater fluid level sensing and control system A wastewater fluid level sensing and control system is provided. The system comprises a control panel, a reservoir, at least one pump and a fluid level sensing device. The control panel comprises a housing and user interface input and output devices for use with con... | 12/30/2008 |
| 7423541 | Excessive product usage detection using a level monitoring system A system for detecting excessive usage of product in a storage tank is provided. The system comprises a monitor and a data center. The monitor is operatively coupled to the tank for monitoring a level of product stored therein. The data center is in communication wi... | 09/09/2008 |
| 7423542 | Water detection sensing system A water detection signal generator includes a water-sensing member with a first surface which is movable from a first position to a second position upon contact with water by the sensing member. A movement responsive device is coupled with the first surface of the s... | 09/09/2008 |
| 7417552 | Flood alarm A flood alarm is disclosed. In an illustrative embodiment, the flood alarm includes a float assembly and a telephone system interface module connected to the float assembly. A method of indicating a flood in a structure is also disclosed. ... | 08/26/2008 |
| 7405670 | Method and system for detecting and isolating stray voltage A stray voltage detection and reduction system. The stray voltage detection portion of the system includes a vessel configured to hold a liquid, such as water. An electrode is suspended in the water, and another electrode is positioned below the vessel in contact wi... | 07/29/2008 |
| 7369055 | Water softener monitoring system A system for monitoring the level or amount of a material within a container is provided. The system includes a detection mechanism that can be a direct detection mechanism or any of a number of indirect detection mechanisms. When the detection mechanism senses an u... | 05/06/2008 |
| 7362230 | Leak detection apparatus Leak detection apparatuses located, at least in part, in the deadspace below a floor in an abode wherein the leak detection apparatus captures, detects and signals the presence of leaking water and other aqueous solutions. ... | 04/22/2008 |
| 7337078 | System and method for remote asset monitoring A system and method for remotely monitoring conditions at a location and for controlling devices at the location. The inventive system includes: a data link in communication with an electronically readable instrument, the data link having a transceiver configured fo... | 02/26/2008 |
| 7327272 | Apparatus for determining and/or monitoring a process variable An apparatus for determining and/or monitoring at least one process variable of a medium in a container. The apparatus has at least one mechanically oscillatable unit unit which produces a measurement signal at least dependent on the process variable. It also has at... | 02/05/2008 |
| 7326183 | Intraocular pressure control An improved method of controlling intraocular pressure with a microsurgical system using measured flow rate and a dual infusion chamber. ... | 02/05/2008 |
| 7327247 | Fire detection system and method using multiple sensors Outputs from a plurality of different ambient condition sensors are cross correlated so as to adjust a threshold value for a different, primary, sensor. Cross-correlation processing can be carried out locally in a detector or remotely. To minimize false alarming, th... | 02/05/2008 |
| 7319401 | Radar level gauge system with variable alarm limits A radar level gauge system for determining the filling level of a filling material in a tank is disclosed. The system comprises a transmitter for transmitting measuring signals towards the surface of the filling material; a receiver for receiving echo signals from t... | 01/15/2008 |
| 7313956 | Lubrication system The present invention is directed to lubrication system having a reservoir having a body. A follower is moveably disposed in the body. The system further comprises an alarm system having an electrical switch operably associated with the follower. The alarm generates... | 01/01/2008 |
| 7312716 | Wireless communication using an intrinsically safe design for use in a hazardous area A wireless circuit setup is used in a hazardous area where the circuit is intrinsically safe and does not require explosion proof containment. In this setup, an intrinsically safe master barrier (420) is used without the use of a resistor and one or more resi... | 12/25/2007 |
| 7307538 | Pump connector system A single pump control unit can be coupled to first and second float switches and a pump for purposes of removing fluid from a region such as a sump. A supplemental set of contacts can be provided to couple an alarm indicating signal to a remote alarm. An alarm state... | 12/11/2007 |
| 7304583 | Device for detecting a defined filling level of a medium in a container An apparatus for detecting a predefined fill level of a medium in a container having a lid by means of a conductive measuring system, which has at least two measuring electrodes extending into the container. A measurement current flowing between the two measuring el... | 12/04/2007 |
| 7298280 | Lighted fluid flow indication apparatus A fluid flow indication apparatus is provided for monitoring and giving an indication of fluid flow. ... | 11/20/2007 |
| 7298281 | System and method for verifying installation of a tank level monitor A system and method of verifying the installation and data path used by a tank level monitor is provided. Once an installer completes the installation of the tank level monitor, the monitor is activated. The monitor performs a self test and transmits information to ... | 11/20/2007 |
| 7298278 | Automatic delivery/drain detection using a level monitoring system A system for monitoring a level of product in a tank to detect one of a delivery and a drain operation is provided. The system comprises a monitor and a data center. The monitor is operably coupled to the tank and adapted to detect the level of product in the tank a... | 11/20/2007 |
| 7295125 | Multi-sensor baby care monitoring system A multi-sensor baby care monitoring system includes a wetness sensor configured to generate a first signal relating to an occurrence of a wetness event relative to a wetness containment device, such as a diaper. The monitoring system further includes a human life se... | 11/13/2007 |
| 7295126 | Perforated plane moisture sensor A moisture sensing apparatus, system and method. In general, a surface can be provided, and one or more conductor pairs located in a plane of the surface. Each conductor of the conductor pair(s) is insulated from one another. Water droplets forming on the conductor ... | 11/13/2007 |
| 7292143 | Remote sensing and communication system A remote sensing system and method for instrumenting the entries to manhole enclosures, in order to provide a platform and means for sensing environmental parameters within and around the enclosures and wirelessly transmitting those parameters to a distant site. The... | 11/06/2007 |
| 7287557 | Anesthetic tank of an anesthetic dispensing unit An anesthetic tank (1) of an anesthetic dispensing unit is used especially for desflurane and has improved reliability of operation by mutually complementing level monitoring devices. The anesthetic tank (1) is equipped with a level tube (3) arr... | 10/30/2007 |
| 7283058 | Tree smoke detection system and method of using same A tree smoke detection system and method which includes a conically shaped smoke collector housing having an interior wall extending between a wide entrance mouth opening and a narrow exit vent opening and a smoke detection device mounted to the interior wall to pos... | 10/16/2007 |
| 7275417 | Fueling system vapor recovery and containment performance monitor and method of operation thereof A method and apparatus for monitoring and determining fuel vapor recovery performance is disclosed. The dispensing of liquid fuel into a tank by a conventional gas pump nozzle naturally displaces a mixture of air and fuel ullage vapor in the tank. These displaced va... | 10/02/2007 |
| 7265677 | External device indicating that a tank is filled up System for indicating when a tank is full. The system includes a signal and control box. A container is connected to the tank. The container has a base, a float, an upper portion, and a lower portion. An orifice is arranged at the upper portion of the container. The... | 09/04/2007 |
| 7260988 | Fuel level sender circuit with alternating current direction The system includes a fuel sender and a controller. The fuel sender has a variable resistance and the variable resistance varies based on the quantity of fuel in the fuel tank. The controller is in electrical communication with the fuel sender. Further, the controll... | 08/28/2007 |
| 7255634 | Draining device and lens processing system having the same A draining device for removing processing water attached to a lens includes: a first lens holding shaft to which a cup attached to a refractive surface of the lens as a processing jig can be fitted; and a rotating unit which rotates the first lens holding shaft to r... | 08/14/2007 |
| 7252085 | Device for inhalation therapy The invention relates to a device for inhalation therapy. Said device comprises an aerosol-producing device for spraying a liquid (3), preferably comprising a membrane (1), a support unit (6), an electromechanical transducer unit (7), and... | 08/07/2007 |
| 7250857 | Multiplexer method and system for intrinsically safe applications and a multiplexer switch for use therein A multiplexing system is provided for a plurality of sensors disposed in a tank containing a potentially explosive environment and excited from a common excitation circuit outside of the tank through a corresponding plurality of signal lines that penetrate the tank.... | 07/31/2007 |
