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| Number | Title | Issue Date |
| 6822575 | Backfill prevention system for gas flow conduit A backfill prevention system for a gas flow conduit, comprising a gas flow monitor circuit which measures the rate and direction of gas flow through a gas flow conduit and converts the measured data into a voltage signal. A valve control circuit operably connected t... | 11/23/2004 |
| 6816064 | Escape apparatus detecting an emergency situation and providing illumination A survival device for use in an emergency situation includes a battery, a lamp, and a detection circuit for detecting an occurrence of the emergency situation and for switching the lamp to be powered by the battery when such an occurrence is detected. In one form, t... | 11/09/2004 |
| 6812846 | Spill detector based on machine-imaging Cameras and image processing techniques are applied to the problem of spill detection. Fixed background data may be removed using a technique based on image subtraction. The remainder of one or more images may be segmented. The segments may then be tested to identif... | 11/02/2004 |
| 6812848 | Water leak mitigation system A water leak mitigation device comprising a power supply, a building systems interface, a plumbing interface, and a monitoring device is provided. The monitoring device produces a primary input to the building systems interface. Upon receipt of the primary input, th... | 11/02/2004 |
| 6768421 | Container crane radiation detection systems and methods A container crane assembly is operable to lift shipping containers for transfer between a dock and a ship transporting the containers. Typically, the container crane includes a hoist attachment which engages the shipping container. A fissile or radioactive material ... | 07/27/2004 |
| 6731215 | Moisture monitoring system A leakage response system for an appliance includes a leakage sensor which is operative to change an electrical parameter upon contact by a conductive liquid, a controller circuit electrically coupled with the strip for generating an activation signal in response to... | 05/04/2004 |
| 6696964 | Device for monitoring the filling of a bag A device for monitoring the filling of a bag (10) comprises a resistor element to be mounted on the outside surface of the bag, the resistor element being a flexible potentiometer (20), the resistance whereof being changed by bending of the potentiometer ... | 02/24/2004 |
| 6690280 | Apparatus and process for infusion monitoring A process for monitoring infusion into a patient includes hanging a fluid bag from a monitoring apparatus. The weight of the fluid bag is periodically measured, using an electronic weight sensing mechanism and a microprocessor, to detect either a no-fluid... | 02/10/2004 |
| 6657546 | Integrated water treatment control system with probe failure detection The integrated water treatment control system incorporates control of filtration, heating, chemical treatment and water conditioning; a programmable display shows values of key parameters, operational settings and system status; a user-selectable multi-li... | 12/02/2003 |
| 6650244 | On-vehicle flood alarm system An on-vehicle flood alarm system is disclosed to install a water level sensor in the bottom side of the floor of the motor vehicle, which water level sensor works when the motor vehicle's ignition switch turned off, and sends a control signal to a micropr... | 11/18/2003 |
| 6628202 | Thermal dispersion mass flow rate and liquid level switch/transmitter A thermal dispersion switch/transmitter for determining flow rate and liquid level in a non-contacting apparatus. A special preparation of one or more small spots in the outside surface of the wall of the conduit, standpipe or container enables one or mor... | 09/30/2003 |
| 6598454 | System and method for monitoring a pressurized system A system and method for monitoring a pressure relief device are provided. The system includes a release sensor that provides an indication when the pressure relief device activates. A wireless transmitter is connected to the release sensor and sends a wir... | 07/29/2003 |
| 6590402 | Engine oil contamination sensor An engine oil contamination sensor includes a first sensing electrode and a second sensing electrode. A sensing area is established between the electrodes. The sensor is oriented in an oil pan such that the sensing are is completely submerged in engine oi... | 07/08/2003 |
| 6573836 | Method and apparatus for detecting the presence of powdered material in envelopes An apparatus for detecting the presence of powdered materials in envelopes comprises a container with an envelope-positioning unit, envelope corner or edge cutter, a powder excitation and extracting means for shaking the contents of the envelope, and a po... | 06/03/2003 |
| 6559771 | Sensing and measuring circuit employing a positive-temperature-coefficient sensing device A sensing and measuring circuit, employing a positive-temperature-coefficient sensing device, for detecting the presence and approximately measuring the quantity or concentration of heat-absorptive substances such as water. May be used for sensing a ... | 05/06/2003 |
| 6549136 | Sensing and switching circuit employing a positive-temperature-coefficient sensing device A sensor and associated circuitry for sensing and reacting to the presence of a fluid or other material having heat capacity. A positive-temperature-coefficient device initiates a switching step when the amount of heat-capacity material reaches a certain ... | 04/15/2003 |
| 6533926 | Filter cartridge with concentric circuit rings for data transmission A replaceable filter cartridge includes an end plate 106 having a data component 107 electrically coupled to an pair of concentric circuit rings 108, 109. The data component may include a sensor, data chip, or resistor and is configured to provide filtrat... | 03/18/2003 |
| 6535134 | Method for the generation of an electrical signal sensor device for executing the method and the use of the sensor device A method for generating an electrical signal and a sensor device (10) for executing the method. The signal is generated because of a change in a fluid-filled space. A sensor element (12) of the sensor device (10) detects the heat transfer over time betwee... | 03/18/2003 |
| 6519790 | Optoelectronic device assembly mounted to bathroom equipment An optoelectronic device assembly mounted to bathroom equipment is mainly made up of a silicon chip, a face board in match with the silicon chip, a water proof seal plate in combination with a piece of bathroom equipment, such as a faucet, a shower head, ... | 02/18/2003 |
| 6489896 | Air in-line sensor for ambulatory drug infusion pump An air in-line sensor for detecting air bubbles in a therapeutic solution flowing through a tube utilizes a unitary type sensor having a channel for receiving the tube. The channel has a tube loading section. A signal emitting member is positioned on one ... | 12/03/2002 |
| 6476723 | Insulating oil leak containment Insulating oil in electric power transmission devices such as a transformer is filtered for removal of accumulated water and carbon particles. The filter and circulation pump are usually located in a separate cabinet external to the transformer with circu... | 11/05/2002 |
| 6462655 | Zone check test system A fluid flow detector test system includes a flow conduit and a pump for providing a test fluid flow at the detector. A test unit includes a programmed processor coupled to the pump by a drive circuit such as a solid state switch or a relay. The detector'... | 10/08/2002 |
| 6456197 | Oil-in-water detector buoy arrangement A self-righting buoy having an oil/water sensor is provided which includes a radio transmitter or signaling beacon to trail a loading hose or a potential source of leaking oil, such as a FPSO, down current for remote detection of oil sheens.... | 09/24/2002 |
| 6441743 | Method and apparatus for determining hazard levels of chemical/biological/nuclear agents in an environment A system and method for determining hazard levels of chemical, biological, and nuclear agent in an environment processes chemical vapor concentration measurements and generates hazard levels of the chemical vapor. The system and method provide an estimate... | 08/27/2002 |
| 6433694 | Sensor having improved desorption times and related control circuitry A sensor and method for rapidly determining the absence of a vapor in a gas or fluid is described as well as a method for constructing the sensor. The sensor comprises a resistive element having first and second leads; an elastomeric material in thermal c... | 08/13/2002 |
| 6433693 | Apparatus and method for boil phase detection based on acoustic signal features An apparatus and method for determining at least one boil phase of a liquid is provided. The boil phase is determined from an acoustic signal generated by the liquid during heating, the acoustic signal is measured by an acoustic sensor. The apparatus comp... | 08/13/2002 |
| 6422061 | Apparatus, systems and methods for detecting and transmitting sensory data over a computer network A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and concentration of a wide variety of specified vapors. The device pro... | 07/23/2002 |
| 6417773 | Sound-actuated system for encouraging good personal hygiene in toilet facilities A system for encouraging good personal hygiene in toilet facilities is provided, including means for detecting the acoustic signal generated by the inrush of water into a toilet bowl to trigger a recorded admonition to the toilet user to cleanse his or he... | 07/09/2002 |
| 6404344 | Method of compensating for erroneous reading in a mass flow meter A method of correcting reading of a non-contact solids flow meter measuring solid particulate flow where the solid particulate product enters the flow tube at one end and flows past a sensor and then exits the flow tube. The sensor for the flow meter is v... | 06/11/2002 |
| 6396404 | Double check valve assembly for fire suppression system A double check valve assembly having at least one three way valve with a pressure gauge in communication with the double check valve downstream of the second check valve. A flow detection arrangement with a battery powered alarm and automatic dialer and t... | 05/28/2002 |
| 6377181 | Method and apparatus for moisture detection in exterior sheathing of residential and commercial buildings An automated device monitors moisture content in exterior sheathing of a building for detecting moisture intrusion into the sheathing walls. A plurality of moisture sensors are embedded in selected exterior walls of the building behind the cladding and ar... | 04/23/2002 |
| 6377171 | On-line filter monitoring system A monitoring system (10) is disclosed for monitoring the condition of a filter (16) filtering a gas or liquid. Using various sensors, the permeability of the filter is monitored on a continuous basis. A significant increase in permeability, decrease in pe... | 04/23/2002 |
| 6333685 | Apparatus for detecting submergence of vehicle A submergence detection portion 21 is provided in a circuit substrate, or the like, which carries electronic circuits of a power window control portion. The submergence detection portion 21 is configured to have an elliptical hole portion 25 provided in t... | 12/25/2001 |
| 6317051 | Water flow monitoring system determining the presence of leaks and stopping flow in water pipes A water flow monitoring system for determining the presence of leaks in plumbing pipes having water flowing through the pipes under high pressure includes a flow monitor which is mounted to the pipe for sensing the flow of water through the pipe. A contro... | 11/13/2001 |
| 6310554 | Severe weather detection apparatus and method of detecting and warning of severe weather conditions A severe weather detection apparatus for detecting severe weather and method of detecting and warning of approaching severe weather conditions is provided. The severe weather detector apparatus includes a barometric pressure sensor and computerized means ... | 10/30/2001 |
| 6285288 | Remote air detection A transmitter (41) is arranged to produce and focus a beam (54) on a remote focal point (55). A small proportion of resultant light (58) is back-scattered from the focal point (55) by particles or aerosols in air flowing through point (55) and returns to ... | 09/04/2001 |
| 6255954 | Detection of wear-particles and other impurities in industrial or other fluids The present invention includes a method of detecting contamination in a fluid sample includes bringing a fluid sample into contact with a pair of spaced apart electrodes and applying a plurality of voltages across the electrodes, wherein the plurality of ... | 07/03/2001 |
| 6250132 | Method and apparatus for real time gas analysis A modular apparatus for analyzing a fluid includes a disposable fluidic sensor module, a replaceable transducer module, and an expendable electronics package. The disposable fluidic sensor includes a fluidic flowmeter and a capillary structure formed in a... | 06/26/2001 |
| 6218949 | Liquid level monitoring and control apparatus A liquid level monitoring and control apparatus is described, which generates an alarm signal or a safety signal, discontinuing an operation such as heating, when the liquid level in a controlled vessel has reached a predetermined level. Several signals, ... | 04/17/2001 |
| 6217751 | Water quality monitor for a reverse osmosis water purification system A water conductivity monitor that is controlled by a microcontroller which provides a pair of probe driving signals that are 180° out of phase. The monitor is connected to a feed water probe that is located within the unfiltered water of a water purifica... | 04/17/2001 |
