| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 340605000 | Leakage | 67 |
| 20080218362 | Remote water shut-off device - Described herein, is a device and system for remotely shutting off the supply of water to water heaters, thereby preserving a reservoir of potable water within the water heater during exigent times. An “off” signal may be sent within a region, thereby preventing the further flow of water into water heaters when the water supply has become contaminated. The device includes an antenna for receiving signals, a valve unit, and a solenoid capable of opening and closing the valve unit upon the receipt of “on” and “off” signals. The device may be battery operated and may sound a warning alarm when activated and/or when the batter is low. Also described, is a method of preserving a potable reservoir of water within a water heater upon the water supply leading to the water heater becoming contaminated. | 09-11-2008 |
| 20080224876 | 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. | 09-18-2008 |
| 20080246621 | Leak Control System - A leak detection system includes a first water container, a water detection probe disposed in close proximity to the first water container, the probe having a sensing circuit for generating electrical signals when moisture is sensed by the probe, a water input conduit coupled with the first water container for supplying the first water container with water from an external water source, and a water shut-off controller electronically coupled with the detection probe for regulating the supply of water from the eternal source to the first water container in response to the signals generated by the sensing circuit of the probe. The system further includes an electronic shut-off valve, and the electronic controller includes a trigger circuit for converting signals from said probe to signals for operating the shut-off valve. The water detection probe includes a first circuit having conductor means for detecting moisture-inducing electrical resistance changes, and a second circuit for converting said changes into signals for the trigger circuit. The leak detection system may also include a second container for substantially isolating the first water container and the detection probe therewithin. Preferably, the second container comprises a flexible bag having releasable closure means. The shut-off controller is electrically coupled with one or more of a light, an alarm or a buzzer, for alerting a user that a leak has been detected. The shut-off valve is caused to be closed in response to signals generated by said electronic controller. Preferably, the electronic controller includes first circuit means for determining if the strength of the signals from the water detection probe exceed a predetermined value, and second circuit means for generating a water shut-off signal that causes the shut-off valve to be closed. | 10-09-2008 |
| 20080252470 | Leak Detectors and Leak Detection Methods - Leak detectors and leak detection methods ( | 10-16-2008 |
| 20080252471 | METHOD AND SYSTEM FOR RELIABLY DETECTING STRUCTURE AND WATER SYSTEM LEAKS - A method and system for reliably detecting structure and water system leaks incorporates motion-sensing for determining whether there is activity in a building is occupied and measures humidity of the inside of the building. If there is no activity in the building, and an unexpected level of humidity or sudden change in humidity is detected, an alarm is generated and the building water system can be disabled by an electrically controlled valve. Current consumed by water-consuming and/or water vapor generating appliances can be detected and used to qualify the generating of an alarm or interruption of the water system, so that false alarms are not generated and the water supply is not interrupted due to operation of those appliances. | 10-16-2008 |
| 20080266124 | Domestic water leak automatic detectioin and control - The Domestic Water Leak Automatic Detection and Control is a system to be installed in the home to detect any water leaks from plumbing, appliances and spills. The system is designed for the home owner to be simple and intuitive in nature. No setup or programming is required by the owner. Indicators assure the normal operation of the system. When an abnormal condition occurs, the system controller alerts by both visual and aural means and turns off the main water supply to the home. | 10-30-2008 |
| 20080266125 | Method for Actively Monitoring Pipelines - The invention relates to a method for actively monitoring pipelines guiding pressurized media and consumers, which are connected to the respective pipeline or pipeline system, by means of differential pressure measurement. According to the invention, monitoring occurs as to whether permanent and quasi-constant consumption takes place during a specific time period, preferably at the transfer point or behind the point of transfer between the supply device and consumer connection in a continuous manner or in predetermined cycles. If this is the case, it is possible to deduce an abnormal state, e.g. a leak, and an alarm is triggered or the downstream pipeline system is blocked. A series connection, consisting of a first pressure sensor, an electrically or hydraulically actuatable valve and a second sensor, is provided on the device side at or behind the transfer point between the supply device and consumer connection, wherein a control electronics system is connected to the pressure sensors and the valve actuation device, in order to produce an error signal when a decrease in pressure has been recognized per time unit after the valve has been blocked in a controlled manner. | 10-30-2008 |
| 20090066524 | WATER LEAKAGE MONITORING SYSTEM - A water leakage monitoring system including a water leakage position estimator which includes a periodic data acquiring unit for fetching predetermined-period flow rate pressure data stored in a monitoring device, and for fetching a signal related to a flow rate change and pressure changes expecting a water leakage reaction time calculating unit for calculating a pressure reaction time lag between two pressure changes, a pressure propagation velocity estimating unit for estimating a pressure propagation velocity using the pressure reaction time lag and a distance between two pressure gauges located in a water distribution block stored in a pipeline network map data, and a flow rate change position estimating unit for receiving a signal related to the flow rate change, and estimating a flow rate change position using pressure propagation velocity and a flow meter and pressure gauge locating positions of the pipeline network map data. | 03-12-2009 |
| 20090085756 | WATER METER WITH AN EMERGENCY SHUT-DOWN - A water meter with an emergency shutdown is a dual purpose water meter, which records the accumulated water consumption of individual runs as any regular water meter, and detects water leakage or uncontrolled flow by comparing each single continuous run in non-equal batches with a set target quantity. The water meter shuts down the water flow if a single continuous run reach that target. The water matter is adaptable to any type of water meter or method of recording, turbine, vertical turbine, positive displacement, multiple jet, propeller, or magnetic or electronic flow measuring. | 04-02-2009 |
| 20090091460 | Fluid leak detection system and associated method - A fluid leak detection system includes a reservoir, a predetermined quantity of a disinfecting liquid contained within such a reservoir, and at least a pair of elongated conduits. A mechanism for automatically opening the distal end of the at least one conduit includes a leaking fluid absorbent member disposed along the distal end of each of the conduits. The fluid-dissolvable member is dissolved by the leaking fluid and absorbed by the member to permit the conduit to be unfolded and allow the disinfecting liquid to flow outwardly from the distal end of the at least one conduit. The system further includes a support frame attached to a support surface, an interface, a communications device electrically coupled to a switch, a monitoring station, and a communications link connecting the communications device to the monitoring station. | 04-09-2009 |
| 20090091461 | APPARATUS AND METHOD OF SENSING LEAKAGE OF CHEMICAL LIQUID - An apparatus and method of sensing leakage of chemical liquid is provided. The apparatus for sensing leakage of chemical liquid, includes a sensing unit measuring a flow rate of chemical liquid being supplied to a process chamber, a process control unit judging whether leakage of the chemical liquid has occurred using the measured flow rate of the chemical liquid and generating a control signal, and an equipment control unit receiving an input of the control signal and controlling an operation of equipment. | 04-09-2009 |
| 20090096618 | OIL LEAKAGE DETECTOR - An oil leakage detector for detecting the leakage of e.g. diesel or fuel oil in an engine room of a vessel comprises a conduit for an airflow therethrough, and a screen in the conduit. The screen is meshed to prevent oil particles or droplets from passing therethrough. A sensor determines a pressure loss across the screen, and a control system operatively connected to the sensor is configured to output an oil leakage warning signal if the pressure loss exceeds a predetermined threshold value. A fan may be provided for generating the airflow through the conduit. A gas sensor for determining the presence of hydrocarbon, carbon monoxide or carbon dioxide is optionally provided. | 04-16-2009 |
| 20090140866 | SENSOR FOR DETECTING LEAKAGE OF A LIQUID - A sensor for detecting the presence of a liquid. The sensor includes a housing having a concave upper surface, a concave lower surface, and a peripheral wall connecting the upper surface and the lower surface, the wall extending above the upper surface and below the lower surface. A plurality of apertures are formed in the wall. A plurality of electrically conductive members extend above the upper surface and below the lower surface and are separated from one another by a gap in which a liquid can accumulate. The electrically conductive members are configured to generate an output signal when a conductive liquid comes into contact with the electrically conductive members and bridges the gap. An output connector is coupled to the plurality of electrically conductive members and is configured to carry the output signal. | 06-04-2009 |
| 20090195397 | Fluid Detection and Containment Apparatus - Disclosed are portable, easy-to-install apparatuses for detecting and containing fluid leaked or otherwise discharged from a fluid-filled device and for facilitating testing and maintenance of the apparatus and fluid-filled devices. In one aspect of the disclosed invention, upon sensing a fluid discharge, the apparatus activates audible and/or visual alarms and directs the discharged fluid to a predetermined drainage area to prevent damage to areas surrounding the fluid-filled device. In another aspect of the present invention, no plumbing or electrical wiring is required to install the apparatus, thereby allowing an unskilled individual to easily and inexpensively install the apparatus. In yet another aspect of the present invention, the apparatus may be easily located since it is not dependent on gravity or a drainage pipe for discharge of the fluid. Furthermore, the apparatus optionally includes an integral leveling mechanism to accommodate leveling of the apparatus when placed on uneven surfaces. | 08-06-2009 |
| 20090201162 | SYSTEM AND METHOD FOR DETECTION OF A VARIETY OF ALARM CONDITIONS - A water leak detection and active surveillance system applied to one or more single or multiple-story buildings that timely alerts and contacts a decision maker(s) of the leak so that that corrective intervention may be implemented. The system includes multiple water detection endpoints and a base station that is connected by wireless transmission or other communication means. The system also includes a central server which augments the alarms with text messaging and emails as well as maintains a customer database of all water incidents and alarming procedures. The system also monitors the functionality (operating health) of all detection components. The system also provides proprietary access to the database by qualified users through an internet portal. The system includes the capability to implement a water shutoff action to the water source of the affected building. The system can also operate in mixed mode detection where it can detect a combination of alarm conditions such as smoke, motion, etc. | 08-13-2009 |
| 20090207031 | SYSTEM AND METHOD FOR DETECTION OF A VARIETY OF ALARM CONDITIONS - A water leak detection and active surveillance system applied to single or multiple dwellings that timely alerts and contacts a decision maker of the leak so that that a corrective intervention may be implemented. The system includes multiple water detection endpoints and a base station that is connected by wireless telephone or other communication means. The system implements a water shutoff action to the water source of the affected dwelling. | 08-20-2009 |
| 20090212960 | Sniffing Leak Detector - The sniffing leak detector comprises a sniffing probe, a suction device and gas detector. An operator-activated switch initiates the beginning of a measuring operation. The switch starts a time measurement, wherein an alarm signal is generated by a signal transmitter at the end of a predetermined measuring period. The sniffing leak detector allows for an operator guidance from measuring point (MP) to measuring point, wherein the measuring period is predetermined and an adherence to the measuring period is monitored. | 08-27-2009 |
| 20090295588 | METHOD AND APPARATUS FOR VERIFYING A LEAK IN CONNECTION WITH A FLOW INHIBITOR - The present invention relates to a method for verifying a leak situation in a liquid transfer system where liquid is transferred with a frequency-converter-controlled pump from a lower pressure to a higher pressure and where liquid is prevented from being transferred from a higher pressure to a lower pressure with one or more check valves positioned in a pipe system. The method is characterized by comprising the steps of comprising the steps of generating for the frequency converter motion information on the motion of the pump between the motion operations, and indicating a leak situation of the check valve if the direction of operation of the pump is, in the motion information, opposite to the direction of operation during the use of the pump. Further, the invention relates to a system and a control unit of a frequency converter for implementing the method. | 12-03-2009 |
| 20090303057 | LEAK DETECTOR FOR PROCESS VALVE - A leak detection system is described for detecting a leak through a closed valve disposed between an upstream pipe and a downstream pipe of an industrial process. An insertable plate is coupled to the valve in the pipe in-line with the fluid flow. A sensor couples to the flow and provides a signature output. A leak detector is coupled to the sensor and adapted to detect a leak through the valve based upon the signature output. | 12-10-2009 |
| 20090303058 | ULTRASONIC GAS LEAK DETECTOR WITH AN ELECTRICAL POWER LOSS AND CARBON FOOTPRINT OUTPUT - A system determines the carbon footprint of a compressed gas leak. The system comprises an ultrasonic detector to detect a compressed gas leak, a storage device storing information on the type of gas, the compressor efficiency, and the carbon emissions necessary to generate electricity to drive the compressor. A processing unit includes software that determines an amount of electrical energy needed to recharge the lost compressed gas based on the compressor efficiency and calculates the carbon emissions created by the amount of electrical energy. A method monitoring for gas leaks comprises detecting ultrasonic emissions, generating an electrical signal representative of the compressed gas leak, and calculating an amount of electrical energy needed to recharge the lost compressed gas. The method further includes calculating the carbon footprint based on the carbon emissions necessary for the electrical power generation system that drives the compressor. | 12-10-2009 |
| 20090322544 | METHOD AND APPARATUS FOR REAL TIME ENHANCING OF THE OPERATION OF A FLUID TRANSPORT PIPELINE - A real time method and dynamic logic-based system for enhancing the operation of a pipeline network is disclosed. The system and method perform monitoring of the operation of a pipeline network, generate alarms in response to differing levels of destabilized pipeline operations, manage the generation of alarms based upon known operating events and operating conditions, diagnose potential source of the detected destabilized events and manage the operation of the pipeline. | 12-31-2009 |
| 20100039271 | System and Method for Leak Detection - A leak detection apparatus has a transducer arranged for detection of sound, the transducer translating the sound into an analog signal and a display device. In addition, the leak detection apparatus has logic configured to detect the analog signal and display to the display device a gain range corresponding to the signal. | 02-18-2010 |
| 20100045471 | LEAK DETECTION AND CONTROL SYSTEM AND MEHTOD - A system and method for detecting leaks using sensors to report the leak and communicate with a control unit to turn off the source of the leak once detected. A valve can be turned off in the event of a leak and embodiments employing battery power can function during loss of power such as a power blackout. Wireless sensors can be employed to detect leaks that wirelessly communicate with a control and operate solely with a designated control unit. The wireless sensors can operate using low power provided by batteries. The control panel can display alarm conditions from the sensors, including: low battery, poor signal, wet sensor, communication failure, sensor failure. | 02-25-2010 |
| 20100219959 | Leak detector for detecting leak of liquid injected into blood vessel using pulse signal - A leak detector sequentially emits pulse signals toward a human body at a position at which a needle is inserted, detects pulse signals reflected inside of the human body, and measures a time interval between the emission and the detection for each of the pulse signals. The leak detector then calculates the difference between the measured interval and a predetermined time interval, and generates a leak warning for notification when the difference exceeds an acceptable range. Since a swelling on the surface of the human body causes a path of the pulse signal to extend, the leak detector can detect, based on the extended signal path, that the needle has come off a blood vessel. | 09-02-2010 |
| 20100289652 | Systems and Methods of Interaction with Water Usage Information - Exemplary systems and methods for interaction with water usage information are provided. In various embodiments, a method comprises receiving water usage data from a meter device, receiving an identifier from a user associated with the meter device, providing an interactive interface to the user, the interactive interface conveying at least some water usage information based on the water usage data, receiving a first characterization of a first water activity from the user, generating a visualization based on the water usage information and the first characterization of the first water activity, and displaying the visualization. | 11-18-2010 |
| 20100302047 | INTEGRATED WATER DETECTOR - A leak detector pad comprising a circuit board having a bottom surface and a top surface, spaced first and second electrically conductive traces located on the bottom surface, and an electronic circuit mounted on the top surface. The circuit includes a first segment adapted to create an alternating current (AC) voltage waveform, a second segment adapted to apply the AC voltage waveform between the traces on the bottom surface of the circuit board, a third segment adapted to create a measure of a capacitance between the traces based upon an AC current flowing between the traces as a result of the AC voltage waveform, and a fourth segment adapted to create a direct current (DC) voltage alarm signal if the measure of capacitance provided by the third segment indicates the presence of fluid. | 12-02-2010 |
| 20100302048 | INTELLIGENT EXIT SIGN - An emergency display panel includes a housing having a first surface mountable to a building structure. The housing includes a cavity defined therein and the housing includes circuitry adapted to connect to a remote networking source. A display surface extends from the housing and displays indicia thereon. At least one emergency detector such as a smoke detector, a carbon monoxide detector and gas detector is disposed within the housing. | 12-02-2010 |
| 20100315245 | DOMESTIC WATER LEAK AND HUMIDITY DETECTION AND CONTROL APPARATUS - A domestic water leak and humidity detection and control apparatus to monitor and detect water leaks and to alert a user by an aural buzzer and by illuminated green, red, or yellow LEDs of an operative state of the apparatus incorporates one or more sensor sets, each sensor set having one or more leak detectors connected to a central controller; the central controller having for each sensor set a respective comparator set and a respective LED set, and the central controller connected to and controlling the aural buzzer and controlling a water valve to control water leaks originating from a domestic water supply by electrically controlling the water valve. | 12-16-2010 |
| 20110025511 | LEAK SENSOR MONITOR - A sensor leak monitor device that consists of well known elements arranged in a novel manner such that it can detect an involuntary consumption and alert a person when such is occurring. A pressure gage coupled with a timing device measures in a constant manner the internal pressure of a pipe and establishes a reference pressure. Upon the opening of any outlet of the network, the measured pressure will fall below this reference pressure value. If the measured pressure does not return to the reference pressure value within a stipulated time, it would be safe to assume that involuntary consumption is happening. Temperature is monitored and reported whenever it reaches a very low or freezing level. The device provides for audio and visual alerts to bring about the correction of the involuntary situation. | 02-03-2011 |
| 20110063116 | SENSING NETWORK AND METHOD - A system and method are described for detecting toxic gas releases in an urban environment. The system includes a series of repositionable remote sensor nodes that are located in an environment containing a toxic gas, the sensor nodes including a chemical sensor and/or a meteorological sensor. The sensor nodes gather data relating to the type of gas released and the surrounding atmospheric conditions and relay the information back to a data processing hub where the data is collated and analysed to produce an indication of the likely spread of the gas plume, the likely danger to the surrounding population and an indication of the release point of the gas. | 03-17-2011 |
| 20110109464 | SENSING NETWORK AND METHOD - A system and method are described for detecting toxic gas releases in an urban environment. The system includes a series of repositionable remote sensor nodes that are located in an environment containing a toxic gas, the sensor nodes including a chemical sensor and/or a meteorological sensor. The sensor nodes gather data relating to the type of gas released and the surrounding atmospheric conditions and relay the information back to a data processing hub where the data is collated and analysed to produce an indication of the likely spread of the gas plume, the likely danger to the surrounding population and an indication of the release point of the gas. | 05-12-2011 |
| 20110187540 | WET ALERT! SYSTEMS - A drip tray alarm and container caddy system comprising a receptacle having an inner volume, a top side with a center and a perimeter lip, a bottom side and a plurality of side walls. The receptacle comprises an inner volume for containing leaked fluid. The top side of the drip tray alarm and container caddy system comprises a plurality of evenly-spaced downwardly-sloping drainage channels for receiving and directing at least one leaked fluid, a center-opening connecting the plurality of evenly-spaced downwardly-sloping drainage channels, and a detection and indicator device for detecting and indicating the presence of leaked fluid when the leaked fluid in the inner volume reaches a predetermined level. The top side further provides a storage surface for resting at least one container. | 08-04-2011 |
| 20110199220 | Methods and apparatuses for detection of properties of fluid conveyance systems - A system and method for monitoring and/or detecting the flow of one or more fluids in a fluid system including leak detection system integral to the fluid system (e.g., at any point along a conduit, at a connection between conduits such as at a fitting assembly, etc.) configured to detect incipient, early stage levels of the leak. Based on one or more factors related to the fluid and/or the leak, the methods, devices, and systems disclosed herein can provide an indication of a suitable action or process in response to the fluid or the leak including performing preventative maintenance or providing an indication of the need of maintenance in response to the leak. | 08-18-2011 |
| 20110205072 | Leak detection band - The leak detection band is mounted about a pipe joint for generating an alert signal when a liquid leak from the pipe joint is detected. The leak detection band includes an annular mount having a pair of opposed annular edges and an annular recess formed in an interior surface thereof adjacent one of the annular edges. A transmitter is attached to the annular mount, and a pair of substantially semicircular leads are provided. Each lead has opposed first and second ends and a central portion. The first ends are electrically connected to the transmitter. The second ends and central portions are disposed within the recess so that the second ends are mounted opposite one another with a gap being formed therebetween. When a conductive liquid leaks from the pipe joint, the conductive liquid fills the gap, closing a transmitting circuit, causing the transmitter to transmit an alert signal. | 08-25-2011 |
| 20110210857 | SENSOR UNIT FOR CHECKING OF MONITORING AREAS OF DOUBLE-WALLED CONTAINERS OR DOUBLE-WALLED PIPELINES, OR DOUBLE-WALLED VESSELS - An apparatus for checking of monitoring areas ( | 09-01-2011 |
| 20110248855 | METHOD AND SYSTEM FOR ANALYZING VARIATIONS IN MONITORED GAS FLOW USING FLOW SIGNAL ANALYSIS AND AMPLIFICATION - A signal analysis method to enable flow and leak detection devices to accurately detect and amplify the signal from a flow measurement means detecting the pressure effects of very small leaks in contained fluid systems, and leaks in fluid systems that have small flows, where the raw signal is an order of magnitude less than the random pressure fluctuations in the contained system, and is an order of magnitude less than the effects of temperature and manufacturer's variations in the sensing device and the components used in the manufacture of the flow detection device. The method involves windowing the signal in a small section of the range of the sensor, then periodically re-centering the signal. | 10-13-2011 |
| 20110291845 | FLUID LEAK DETECTION AND ALARM - A method and a device are disclosed for reliably detecting fluid leaks while minimizing false alarms. A leak sensor in proximity of a flat leakage surface, such as a floor area, is used to sense a permittivity of a media, such as water, coming in contact with the leak sensor. Leak is indicated if the sensed permittivity exceeds a permittivity threshold within a predefined time period. The predefined time period indicates a rate threshold that if exceeded indicates relatively fast accumulation of fluid in an air gap between the leak sensor and the leakage surface, precluding or reducing the possibility of false alarm due to gradual increase in environmental humidity or moisture. The air gap defines a fluid volume that is substantially filled before leak is detected. | 12-01-2011 |
| 20120007743 | SYSTEM METHOD AND DEVICE FOR LEAK DETECTION AND LOCALIZATION IN A PIPE NETWORK - The invention provides a system for leak detection of a fluid in a pipe network. The system includes flow meters, and vibration detectors adapted to be attached to a pipe at a location in the pipe network. A processor analyzes signals generated by the flow meters and vibration detectors to identify the presence of one or more leaks in the pipe network. The invention also provides a method for detecting and localizing leaks in a pipeline network, and a device comprising a flow meter integral with a vibration detector for use in the system of the invention. | 01-12-2012 |
| 20120007744 | LEAK DETECTOR - A leak detector for detecting and locating leaks in a water supply pipe of plastics, the leak detector comprising a first sensor at a first position arranged to detect a leak signal travelling along a pipe, a second sensor arranged to detect a leak signal travelling along the pipe at a second position spaced from the first position, and a processing device adapted to receive the signals from the first sensor and the second sensor. The processing device may be adapted to determine the velocity of the signals from characteristics of the leak signals. The processing device is adapted to use the velocity and distance between the first sensor and the second sensor to determine the location of a leak. The characteristics may be the relationship between the phase and frequency of the leak signals. | 01-12-2012 |
| 20120019388 | METHOD AND APPARATUS FOR DETECTING WATER LEAKS - A low cost, robust, wireless sensor system that provides an extended period of operability without maintenance is described. The system includes one or more intelligent sensor units and a base unit that can communicate with a large number of sensors. When one or more of the sensors detects an anomalous condition (e.g., smoke, fire, water, etc.) the sensor communicates with the base unit and provides data regarding the anomalous condition. The base unit can contact a supervisor or other responsible person by a plurality of techniques, such as, telephone, pager, cellular telephone, Internet, etc. In one embodiment, one or more wireless repeaters are used between the sensors and the base unit to extend the range of the system and to allow the base unit to communicate with a larger number of sensors. | 01-26-2012 |
| 20120032811 | LEAK DETECTION SYSTEM HAVING POWER AND COMMUNICATION LINES - A leak detection system having power and communication lines includes a leak sensing cable having sensor lines for sensing a leak, detection controllers connected to the sensor lines to detect a leak position signal, and a master controller receiving the detected leak position signal from the detection controllers, wherein the leak sensing cable includes power and communication lines that are wired to supply power to the detection controllers via the master controller and to transmit the leak position signal to the master controller from the detection controllers. According to this invention, the leak detection system has power and communication lines that are able to transmit the leak position signal between the detection controllers and the master controller while supplying power to the detection controllers and the master controller. | 02-09-2012 |
| 20120062384 | Roof drain overflow sensor - An exemplary embodiment providing one or more improvements includes a positive acting sensor which detects the flow of water through a flat roof secondary or emergency roof drain. In embodiments a signal from the sensor is conveyed by a conductor or by wireless means to an alarm box. In embodiments the alarm box provides an audible and or a visual signal indicating a minimal water flow in the secondary drain. | 03-15-2012 |
| 20120092174 | Well Fluid Leak Detection and Response Apparatus and Method - Embodiments of the inventive technology may provide a leaked fluid detection and response system in one aspect, and in another aspect, an environmental enclosure for at least a component of such leaked fluid detection system. Various embodiments of the leaked fluid detection and response system may provide wireless communication of detected leaks and a PLC that automates response and provides information regarding the presence of a leak. Enclosures may, in various embodiments, comprehensively surround enclosed components, thermally insulate enclosed components, include a leaked fluid capture basin, be aerodynamically streamlined, and/or be vermin-tight. | 04-19-2012 |
| 20120105236 | METHOD AND APPARATUS FOR APPLIANCE GAS LEAK DETECTION - A method and apparatus for determining whether an appliance is leaking gas is provided. Pressure measurements are taken after closing off the flow of gas to the appliance and within the appliance so as to isolate the gas within the distribution system of the appliance. If unacceptable changes in the pressure of the gas are detected, a warning signal can be provided and the flow of gas into the appliance can be maintained in an off state until further corrective steps are undertaken. Corrections for temperatures changes between pressure measurements can also be provided. | 05-03-2012 |
| 20120139734 | ELECTRICAL CONNECTOR CLIP FOR MEDICAL SENSORS - A connector clip for medical sensors, including a first main body having two main tip contacts in electrical contact with electrical wires connectable to an instrument and a second main body mounted on the first main body and movable with respect to the first main body between an open position and a closed position. Two auxiliary tip contacts and an electric/electronic circuit provided with two connecting leads each electrically connected to one of the two auxiliary tip contacts are positioned in first or second main body. When a disposable sensor tab is correctly located and clamped each of two contacts is in contact with one of the main tip contacts and one of the auxiliary tip contacts and the electric circuit is connected in parallel with an electrical circuit defined by the sensor | 06-07-2012 |
| 20120188085 | METHOD AND APPARATUS FOR TESTING THE INTEGRITY OF A TANK - A system and method for detecting a leak or structural defect in a tank are provided. The system includes a removable test plate to seal an opening in a tank to be tested with all other openings in the tank to be sealed. The system also includes a motor-driven blower or other vacuum-generating device coupled to a first opening in the test plate. When the blower is activated, it generates a vacuum inside the tank of a predetermined value. A vacuum-monitoring device is coupled to a second opening in the test plate and monitors the vacuum in the tank. A leak or structural defect in the tank is indicated if the vacuum decreases from the predetermined value by more than a predetermined differential within a predetermined time. | 07-26-2012 |
| 20120299736 | Water Leak Warning Device - The present invention discloses an easy-to-use, installation-free water leak warning device having a sturdy hollow body enclosing essential functioning elements including a power source, an amplifier, a speaker, and portions of two electrodes. The water leak warning device is preferably small in size and may be placed at potential water leak or flooding spots. The essential functioning elements are operatively connected with conductive material so that when leaked water flows to where the device is located, an audible signal can be emitted to remind the user of the device to prevent further leakage and mitigate any damage. | 11-29-2012 |
| 20130021159 | Acoustic Leak Detector - An acoustic detector assembly for detecting a leak of a pressurized mixture of liquids and gases in a pipeline or pressurized vessel that includes an ultrasonic acoustic transducer generating an output in response to receiving an acoustical signal associated with the leaking mixture of liquids and gases, a detector connected with the acoustic transducer. The detector may include a band pass filter reducing the non-ultrasonic component of the acoustic transducer output to produce a filtered output, a loudness level detector receiving the filtered output and transmitting a “start” signal if the filtered acoustic signal reaches a specified loudness level, a time bridging module receiving the “start” signal, the time bridging module transmitting a continuous “count” signal while the “start” signal is received and for a predetermined time after the “start” signal is no longer received, and a time delay module transmitting an alarm signal if the time bridging module transmits the “count” signal for a predetermined duration. | 01-24-2013 |
| 20130049968 | FIRE HYDRANT LEAK DETECTOR - A leak detection system includes a housing for installation within a hydrant; at least one leak detection sensor within the housing; and a transmitter circuit in communication with the at least one leak detection sensor for communicating leak detection data. | 02-28-2013 |
| 20130154841 | GAS VALVE WITH VALVE LEAKAGE TEST - This disclosure relates generally to valves, and more particularly, to gas valve assemblies. In one example, a valve leakage test may be performed on a valve assembly including a valve body with a first valve and a second valve, where the valves may be positioned across a fluid path in the valve body with an intermediate volume between the valves. A pressure sensor may be in fluid communication with the intermediate volume and may sense a measure that is related to the pressure in the intermediate volume. The pressure sensor may communicate with a controller to determine a measure that is related to a pressure change in the intermediate volume and compare the measure that is related to a pressure change to a first and/or second threshold value. The controller may output a signal if the measure meets and/or exceeds the first and/or second threshold value. | 06-20-2013 |
| 20130321160 | METHOD AND APPARATUS FOR WIRELESS COMMUNICATION IN TEST, MEASUREMENT, CONTROL, AND COMMUNICATION SYSTEMS - A system for wireless multiple user access to a sensor comprises a sensor unit having a sensor element (e.g. a leak detector), a sensor user interface, and a sensor wireless transceiver that transmits information corresponding to the sensor output. One or more receiving units each receive the sensor information corresponding to the output of the sensor user interface, and provide that output to a receiver user interface. Multiple receiving units may be used, for example, by students receiving training on the use of a sensor unit. An instructor unit can provided to allow an instructor to review the sensor information and create instructional commentary that is transmitted to each of the student receiver units along with the sensor information. | 12-05-2013 |
| 20140028459 | METHOD AND SYSTEM FOR LEAK DETECTION IN A PIPE NETWORK - A method and device for leak detection and localization in at least a portion of a of fluid distribution system. At each of two or more locations, a position locator determines the location of the device and a vibration sensor generates a signal indicative of vibrations detected by the vibration sensor at the location. A processor calculates a parameter of the signal indicative of an average power of the signal at the location over a predetermined time period. For each location, the processor stores in a memory the location of the device and the value of calculated parameter, and then determines a location in the fluid distribution system where the calculated parameter has a maximum value satisfying a predetermined criterion. | 01-30-2014 |
| 20140104065 | Water Leak Warning Device - The present invention discloses an easy-to-use, installation-free water leak warning device having a sturdy hollow body enclosing essential functioning elements including a power source, an amplifier, a speaker, and portions of two electrodes. The water leak warning device is preferably small in size and may be placed at potential water leak or flooding spots. The essential functioning elements are operatively connected with conductive material so that when leaked water flows to where the device is located, an audible signal can be emitted to remind the user of the device to prevent further leakage and mitigate any damage. | 04-17-2014 |
| 20140266744 | SENSORS, COMMUNICATION TECHNIQUES, AND RELATED SYSTEMS - Leak detectors can have a sensor configured to detect a presence of a working fluid externally of a liquid-based heat-transfer system. The leak detector can also have an electrical circuit configured to emit a signal responsive to a detected presence of the working fluid externally of the liquid-based heat transfer system. Methods of detecting a leak of a working fluid from a liquid-based heat-transfer system can include sensing a presence or an absence of a working fluid externally of a liquid-based heat-transfer system. The methods can include generating a tachometer signal in correspondence with a sensed absence and a sensed presence of the working fluid. The methods can include monitoring the generated tachometer signal. | 09-18-2014 |
| 20140306828 | Non-invasive Thermal Dispersion Flow Meter with Fluid Leak Detection And Alert - A non-invasive thermal dispersion flow meter with chronometric monitor for fluid leak detection includes a heater, an ambient temperature sensor and a flow rate sensor which are configured to sense the temperature of a fluid in a conduit, and then monitor the flow of that fluid through the conduit. The fluid flow sensor is incorporated into a Wheatstone bridge circuit which is used to provide increased sensitivity to the outputs of the sensors. Based upon the ambient temperature sensor readings, the flow rate sensor and heater may be adjusted to optimize the operation of the system to detect leaks. An alternative embodiment utilizes a single sensor and separate heater which work together to determine heat propagation times which in turn is used to calculate flow rate. Based on the sensor readings, the flow may be adjusted to prevent damage and leaks by relieving the system of excess pressure. | 10-16-2014 |
| 20140333444 | LIQUID NATURAL GAS CRYOGENIC TANK LEAK DETECTION SYSTEM - A method of detecting leakage of a fluid from a tank is disclosed. The method may include determining cumulative commanded fluid consumption of the fluid in the tank over a selected time period, determining an actual change of a volume of the fluid in the tank over the selected time period, and comparing the cumulative commanded fluid consumption to the actual change of volume of the fluid. The method may further include producing a leak warning upon the actual change of volume of the fluid over the selected time period exceeding the cumulative commanded fluid consumption over the selected time period plus a threshold value. | 11-13-2014 |
| 20150048950 | LIQUID COOLING OF RACK-MOUNTED ELECTRONIC EQUIPMENT - A server rack holds a number of modular servers configured for liquid cooling by passing a liquid coolant through interiors of the servers. Failure management of the cooling system is by management of the servers in segregated fault domains. Each fault domain comprises a number of the servers serviced by a dedicated coolant circuit that is segregated from the cooling circuits of the other fault domains. Potential liquid coolant leaks in a specific fault domain can be identified by monitoring liquid coolant levels in the respective coolant circuits. Each fault domain can include a separate, dedicated heat exchanger and a separate, dedicated coolant reservoir. | 02-19-2015 |
| 20150054650 | Systems and Methods for Sensitive Open-Path Gas Leak and Detection Alarm - An apparatus for detecting leaks from a gas pipeline or storage system includes a light source configured to emit a beam with at least one spectral component capable of interacting with pipeline gas, a reflector configured to reflect a portion of the beam, an optical detector configured to detect the reflected beam, a signal processing module coupled to the output of the optical detector configured to analyze the detected beam and output a measured concentration value that characterizes the amount of target gas in the beam path, and a statistical processing module coupled to the signal processing module configured to store and analyze the measured concentration value. The statistical processing module is further configured to compute a value based on statistical information associated with the stored plurality of concentration values and compare the computed value to a first predetermined threshold, and transmit a first alarm signal if the computed value is greater than the first predetermined threshold. | 02-26-2015 |
| 20150102931 | SYSTEM AND A METHOD FOR DETECTING LIQUID WATER - The present subject matter provides a system and a method for detecting liquid water. The method includes establishing signal communication between an RFID tag and an RFID reader, monitoring the signal communication between the RFID tag and the RFID reader and determining that liquid water is disposed between the RFID tag and the RFID reader or on the RFID tag if the signal communication between the RFID tag and the RFID reader is disrupted, interrupted or terminated. | 04-16-2015 |
| 20150102932 | LEAK DETECTION SYSTEM AND METHOD - A leak detection mat arrangement includes a base member configured to capture, direct and hold liquid while at the same time providing a support that is generally planar. The base member includes a bottom side and an upper side. The upper side includes a plurality of projecting portions separated by a plurality of recessed portions. When the bottom side of the base member is resting on a horizontal surface, the recessed portions are sloped to direct liquid toward a liquid capture zone of the upper side and the projecting portions have top edges that lie in a substantially horizontal common plane for stably supporting one or more items. At least one sensor is located in the liquid capture zone for detecting presence of liquid in the liquid capture zone. | 04-16-2015 |
| 20150116118 | LEAK DETECTION DEVICE AND REMOTE MONITORING SYSTEM USING THE SAME - Disclosed herein are a leak detection device and a remote monitoring system using the same. In accordance with the present invention, locations where multiple leaks have occurred can be accurately determined by connecting a plurality of leak sensing films in series using a plurality of slave controllers having connectors, detecting a leak occurring between the slave controllers, and sending the detected leak to a master controller at a remote place. Furthermore, the present invention provides a remote monitoring system capable of checking whether a leak has occurred or not at a remote place using an apparatus for controlling the leak sensing films. | 04-30-2015 |
| 20150348392 | WATER LEAK DETECTOR - A water leak detector including a housing defining a retention reservoir, and a coupler connected to the housing and configured to secure the housing to a water pipe. A switch is supported by the housing and is configured to detect water at a predetermined level within the reservoir. An indicator may be an electrical communication with the switch to provide an indication to a user when water has reached the predetermined level within the reservoir. | 12-03-2015 |
| 20150348395 | PIPE SYSTEM, AND PIPE FLOW MONITORING AND ALERTING SYSTEMS AND METHODS - A pipe system includes a pipe for containing a pipe flow therethrough having a first flow rate, a sampling tube coupled in fluid communication to the pipe for receiving and containing a portion of the pipe flow therethrough, for interacting with the portion of the pipe flow therethrough so as to form a second flow rate of the portion of the pipe flow being an amplification of the first flow rate, and for returning the portion of the pipe flow to the pipe, and a sensor for sensing the second flow rate and for transmitting a signal being a function of the second flow rate. | 12-03-2015 |
| 20160253893 | VEHICLE FOR DETECTING CHEMICAL LEAKAGE | 09-01-2016 |
| 20180024024 | SYSTEM FOR MONITORING PIPELINE LEAKAGE, PIPELINE ELEMENT PROVIDED WITH THE SYSTEM, AND METHOD FOR MOUNTING THE MONITORING SYSTEM ONTO A PIPELINE | 01-25-2018 |
| 20190145847 | Systems, Devices, and Methods for Detecting Spills | 05-16-2019 |
| 20220139198 | SYSTEMS AND METHODS FOR SYSTEMIC RESOURCE UTILIZATION ANALYSIS AND MANAGEMENT - Systems, methods, and articles of manufacture provide for systemic resource utilization analysis and management, such as employing a single-point sensor to detect or identify resource leakage at one or more other locations in a structure. | 05-05-2022 |
