| Entries |
| Document | Title | Date |
|---|
| 20080202210 | Test gas leak detection using a composite membrane - A leak detector includes a leak detector inlet to receive a test gas; a vacuum pump coupled to the leak detector inlet; a test gas sensing unit connected through a passage to the leak detector inlet; and a membrane that is permeable to the test gas disposed in the passage between the leak detector inlet and the test gas sensing unit, the membrane having a permeance to the test gas that varies by less than five percent over a temperature range of T | 08-28-2008 |
| 20080223112 | Sniffing Probe - Sniffing probes are frequently used for detecting leaking gases in difficult-to-access and poorly visible environments, for example for detecting a gas leakage in a cooling device of a motor vehicle. It is an object of the invention to improve handling of the sniffing probe. According to the invention, the object is achieved by providing an illumination device ( | 09-18-2008 |
| 20080282774 | Electric radiator cap pressure tester - The present invention a portable universal electric radiator cap pressure tester, having a multiple of common radiator cap filler necks fixed on a dash board. The fixed filler necks simulate the filler neck openings on a vehicle's radiator or overflow reservoir. This allows the user the ability to quickly install a common radiator cap on the face of the tool and pressurize the radiator cap to its maximum recommended pressure. This gives the user the knowledge if a used radiator cap will hold its recommend pressure and provide a water tight seal during operation on a vehicle when the engine cooling system is under operating pressure. | 11-20-2008 |
| 20080295579 | DETERMINING SEAL FEATURE INTEGRITY BY TESTING FOR DEFORMATION UPON AIR PRESSURE EXCITATION - Optical metrology methods, apparatuses, and systems for detecting seal integrity. These comprise changing an air pressure inside a chamber to an excitation pressure level when the chamber is placed over a segment of a surface of a structure having one or more seal features and determining whether the integrity of any of the one or more seal features has been compromised by determining, using an optical system, whether any of the one or more seal features have been deformed by the changing of the air pressure. | 12-04-2008 |
| 20080307857 | LEAK DETECTION WITHIN THE INTERIOR OF A CABINET - A drainage tray for detecting leaks from a sink is provided. The drainage tray includes a tray for intercepting the leaks, a trough for collecting the intercepted leaks. The outlet in the trough discharges the collected leaks from the trough. | 12-18-2008 |
| 20080314120 | Method and Device for Determining Hydraulic Leakage Rate in Liquid-Conveying Sections, in Particular, Injection Valves of Internal Combustion Engines - A method and device for determining the hydraulic leakage rate of liquid-conveying parts, in particular injection valves for internal combustion engines, place the liquid-conveying part into a test body, and the liquid-conveying part is charged with a test liquid under a particular pressure, and a carrier gas stream is provided in a flow duct of the test body, and a vapor mixture behind the liquid-conveying part is conducted to an analyzer, and a measurement and analysis are carried out, using the analyzer, of the hydraulic leakage rate of the liquid-conveying part via the concentration of test liquid in the vapor mixture, the carrier gas stream being brought in via a nozzle element close to the leakage point of the liquid-conveying part, and/or a heating of the vapor mixture being provided behind the liquid-conveying part for complete conversion into the gas phase. The testing device is particularly suitable for leakage measurement in fuel injection valves used in fuel injection systems of mixture-compressing externally ignited internal combustion engines. | 12-25-2008 |
| 20080314121 | Apparatus and method for detecting resin leak - A resin leak detector includes a pressure sensor element and a leak determination unit. The pressure sensor element detects a pressure in a case cavity. That is, when resin leaks into a space between an upper circuit case and a lower circuit case, the pressure in the case cavity decreases temporarily. The decrease of the pressure in the case cavity is detected by the pressure sensor element based on comparison between a detected pressure and a predetermined lower limit. The resin leak into the upper and lower circuit case is detected without cutting an outer case of an electronic device such as an acceleration sensor or the like. | 12-25-2008 |
| 20090007638 | Pump Assembly and Method for Leak Detection of Fluid System - A method of detecting a leak in a fluid system, which includes a switch that changes state according to pressure in the fluid system. The method includes changing pressure in the fluid system with a pump assembly. The pump assembly includes a predetermined leak that is in fluid communication with the fluid system and that causes the switch to change state after a predetermined time period. The method also includes detecting a leak in the fluid system if the switch changes state within an amount of time less than the predetermined time period. | 01-08-2009 |
| 20090007639 | LIQUID LEAK SENSING STRUCTURE - According to one embodiment, a liquid leak sensing structure is provided with a casing including a lower wall, a circulation unit received in the casing and providing circulation of a liquid, a liquid leak sensor interposed between the lower wall of the casing and the circulation unit, and a liquid absorbing member interposed between the liquid leak sensor and the circulation unit. The liquid absorbing member permits part of a liquid from the circulation unit to flow therethrough toward the liquid leak sensor. | 01-08-2009 |
| 20090019922 | METHOD AND APPARATUS FOR OIL LEAK TESTING - A method and apparatus to test for oil leaks in an engine component after being machined. The method and apparatus include a wash station that washes the engine component after being machined, and a buffer that heats the engine component to a first temperature. An oil leak test station tests the engine component at about the first temperature for oil leaks. | 01-22-2009 |
| 20090044601 | METHOD AND DEVICE FOR TESTING THE SEALING TIGHTNESS OF TEAR-OFF LIDS - In a linear transport device ( | 02-19-2009 |
| 20090113994 | Method for Detecting Separation in a Structure - A method for detecting separation in a structure that comprises at least two portions or layers affixed together comprises forming a cavity into the structure that passes through an interface formed between the two portions and plumbing the cavity to a monitoring system. A pressure differential is established between the cavity and a reference pressure to which the structure is exposed. A monitoring system monitors for a change in the pressure state of the cavity. Changes in the pressure state are indicative of a separation between the portions or layers. | 05-07-2009 |
| 20090126463 | Infusion Device Provided with a Water-Tight Cover - An infusion device for a therapeutic application,
| 05-21-2009 |
| 20090173143 | Leak sensor apparatus for sensing moisture - A leak sensor apparatus for sensing moisture is disclosed, which is prepared in such a manner that a base film layer, a conductive line layer and a protection film layer are sequentially stacked on its lower surface in an upward direction, and said conductive line layer includes a resistance line having a certain resistance value per unit area in a longitudinal direction, and a conductive line which is spaced apart from the resistance line and is formed in parallel with respect to the resistance line, and said protection film layer is provided with a plurality of holes which are formed at regular intervals so that the resistance line and the conductive line of the conductive line layer can be exposed to the outside through the holes, respectively. | 07-09-2009 |
| 20090193875 | LASER INDICATOR FOR REMOTE MEASURING DEVICES AND METHODS THEREFOR - Provided is a device for use in locating the origin of a phenomenon of interest, including a sensor capable of detecting the presence of the phenomenon of interest and generating a detection signal in response thereto. The device also includes a phenomenon origin locator to monitor the detection signal and project light toward the origin when the detection signal satisfies a selected criteria level, thereby indicating the origin of the phenomenon of interest. | 08-06-2009 |
| 20090205408 | METHOD FOR DETECTING CLUTCH CYLINDER LEAKAGE - A method is provided for sensing leakage in a clutch cylinder system in a vehicle including an automated manual transmission, wherein the clutch cylinder system includes a clutch cylinder provided with a reciprocable piston, whose position is sensed by a position sensor and affected by pressurization of the cylinder by opening or closing at least one air inlet valve and by opening or closing at least one air outlet valve and wherein the clutch is in an engaged position when there is no air pressure in the cylinder. The method includes the steps of: a. closing the at least one inlet valve and at least one outlet valve for compressed air; b. sensing a position of the piston during a predetermined time span, and, c. if the position has changed more than a predetermined allowable position change, sending an error signal to an onboard diagnostics system or a signal light in the vehicle. | 08-20-2009 |
| 20090235722 | APPARATUS AND METHODS FOR LEAK DETECTION IN BIOPROCESSING BAGS - An apparatus detects a leak of an electrically conductive fluid from a disposable plastic bag used in mixing applications, such as during bioprocessing in a sterile environment. In one embodiment, the bag is associated with a sensor for detecting a leak from an interior compartment. The sensor may be arranged to detect either a leak internal to the at least two material layers of the bag or external to the outer layer, or both. Related methods are also disclosed. | 09-24-2009 |
| 20090241642 | Method for Determination of a Leakage on a Piston Machine - A method of determining a leakage in a piston machine comprising at least two pistons is provided. The rotational velocity of the piston machine, and therefore the volume flow through the piston machine, is varied periodically as part of a time-limited active test while measuring the differential pressure and the angular position. An angular position-based Fourier analysis of the measured values from differential pressure and rotational velocity measurements performed during the test are used to experimentally determine the amplitude ratio and phase angle difference between volume flow variations and pressure variations. The amplitude ratio and phase angle difference are used, together with an angular position-based Fourier analysis of the measurements of differential pressure and rotational speed made after the active test, to determine the amplitude and phase of the leakage flow. | 10-01-2009 |
| 20090249864 | Compositions Comprising A Fluoroolefin - The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents. | 10-08-2009 |
| 20090266146 | DEVICE FOR DISPLAYING AND MEASURING AIR LOSSES IN A CHEST DRAINAGE APPARATUS - A device for displaying and measuring air losses in a chest drainage apparatus, having a transparent window enclosure with a connection to a tube end connected to a chest cavity to convey exuded liquids for collection a vessel and air losses, a chamber being provided within the apparatus at one of the transparent windows, that contains liquid and comprises the outlet section of a duct for air loss conveying. The device comprises a bell arranged above the outlet section, immersed in liquid at least at a lower end area, and provided, at the submerged portion, with at least one always-open air outflow port and with at least one additional port for the outflow of air. | 10-29-2009 |
| 20090293591 | COLLECTING LINE FOR MONITORING AND LOCATING LEAKAGES AND DEVICE HAVING THE COLLECTING LINE - A collecting line for leakage monitoring in an installation is permeable to a substance to be monitored in at least one subarea extending along the longitudinal direction. The collecting line is formed of at least two subsections that are spaced from a first end of the collecting line. The distance between the second subsection and the first end is larger than the distance between the first subsection and the first end. The permeability to the substance to be monitored is higher in the first subsection than in the second subsection. A device having the collecting line is also provided. | 12-03-2009 |
| 20090301172 | TWISTED LEAK DETECTION CABLE - Disclosed is a leak detection cable that has an outer jacket layer and a four wire construction in a flat wire configuration that is twisted in a helix. Detection cables are disposed on the exterior surface adjacent openings of the jacket to allow for detection of aqueous fluids. The wire is twisted in a helix to allow adjacent detector wires to easily detect aqueous fluids. Disparate materials are used for the jacket and the coatings of the wires, to allow the jacket to be easily removed from the wires without affecting the integrity of the coatings of the wires. The four flat wire configuration is sized and spaced for easy connection to an insulation displacement connector. | 12-10-2009 |
| 20090308139 | HANDHELD VACUUM TEST FIXTURE AND METHOD OF MONITORING VACUUM CUP DIFFERENTIAL PRESSURE - An apparatus for checking or monitoring a vacuum drawn by a suction cup used in connection with a material handling system. The apparatus including a faceplate and a handle connected to the faceplate. The handle including a vacuum gauge wherein a passageway extends from the vacuum gauge to the faceplate. | 12-17-2009 |
| 20100000297 | ANTENNA LEAK DETECTION DEVICE AND METHOD - An apparatus for determining the integrity of an antenna system, including a controller, at least one valve operationally connected to the controller, a source of pressurized gas, at least one microwave antenna and a pressure sensor. The at least one microwave antenna is fluidly connected to the pressurized gas by way of the at least one valve. The pressure sensor is in communication with the controller. The pressure sensor senses the pressure of the pressurized gas. The controller is configured to check for a gas leak in the at least one microwave antenna by checking for a change in the pressure with the at least one valve being alternatively opened and closed. | 01-07-2010 |
| 20100011839 | Mattress Cover Leak Detection Apparatus - A system for detecting leaks in mattresses. The system allows for the detection of small holes in a mattress by applying pressurized gas or fluid to the mattress and observing the escape of gas or fluid through tears and incisions in the mattress cover in the formation of bubbles in a layer of solution covering the mattress cover. In an alternate embodiment, the escape of gas or fluid through the small holes produces ultrasonic vibrations, which an ultrasonic listening device detects, allowing an operator to determine the location of the holes. | 01-21-2010 |
| 20100018292 | METHOD FOR LEAKAGE MONITORING IN A TUBE BUNDLE REACTOR - A method is proposed for leakage monitoring in a tube bundle reactor ( | 01-28-2010 |
| 20100043533 | PNEUMATIC ASSEMBLY FOR A PRESSURE DECAY TESTER - A pneumatic assembly for a pressure decay tester of printhead integrated circuits includes a pressurized air supply. A pneumatic clamping arrangement is in fluid communication with the pressurized air supply for clamping a carrier for the printhead integrated circuits such that the carrier is in fluid communication with the printhead integrated circuits. A valve arrangement applies a predetermined pressure to the carrier. A sensing arrangement senses a static pressure in the carrier. A control system is in communication with the clamping, valve and sensing arrangements to control operation thereof and to generate a discernible signal representing said static pressure such that a decay in said static pressure can be determined. | 02-25-2010 |
| 20100043534 | PRESSURE-BASED TESTER FOR A PLATFORM ASSEMBLY - The invention provides for a pressure-based tester for testing integrity of a platform assembly. The platform assembly includes a pair of assembled platform components fastened together and a fluid path extending into both components, the platform assembly suitable for supporting printhead integrated circuits to be tested. The tester includes a housing assembly, a regulated gas supply arranged in the housing assembly, and a retaining mechanism in fluid communication with the gas supply and configured to retain the platform assembly in fluid communication with the gas supply during testing of the platform assembly. The tester also includes a pressure measuring apparatus operatively connected to the gas supply and configured to generate a signal corresponding to a pressure value applied to the retaining mechanism, and a control system configured to control operation of the regulated gas supply, the retaining mechanism and configured to receive the signal from the pressure measuring apparatus and to detect decay in the pressure value. | 02-25-2010 |
| 20100050747 | Leakage detection method using micromachined-thermal-convection accelerometer - A method and device for identifying leaks in or a leakage rate of an integrated circuit package. The method and device include integrating a micromachined-thermal-convection accelerometer in the integrated circuit package and evaluating the initial and subsequent sensitivities of the accelerometer. A change in sensitivity with time provides indicia of a leak and a measure of leakage rate. | 03-04-2010 |
| 20100058837 | DEVICE HAVING MULTIPLE LIGHT SOURCES AND METHODS OF USE - A visualization device is described. The visualization device includes a body, one or more activating lights sources and one or more infrared light sources. The body is configured to receive one or more power sources. One or more infrared light sources are configured to determine temperature. The one or more activating light sources may be positioned at or proximate an end of the bode that is substantially opposite to the infrared light source and are configured to produce activating light. The activating light sources and the infrared light sources are separately or jointly coupled to one or more power sources. Methods of detecting leaks using the visualization device are also described. | 03-11-2010 |
| 20100064773 | FLUID DETECTION WITH A SPECTROMETER-ON-A-CHIP - A liquid detection device for detecting liquid at a location on a structure includes a nanoscale spectrometer-on-a chip, and a fluid-absorptive element for absorbing liquid at the location and also securing the chip to the structure. Fluid absorbed by the element is analyzed by the spectrometer. | 03-18-2010 |
| 20100064774 | VACUUM DECAY TESTING METHOD - A method and system are disclosed for determining whether a leak is present in an evaporative emission control system | 03-18-2010 |
| 20100089125 | TOP COVER SCREW FLOATING CHECKER SYSTEM FOR HARD DISK - A system for cover screw float detection. The system includes a drive cradle coupled to a structure. The system also includes a moveable portion coupled to the structure. The system further includes a sensor coupled to said structure. The system additionally includes another sensor coupled to the moveable portion. Spatial separation between the another sensor and the sensor when the moveable portion is oriented in a screw float check position indicates presence of cover screw float in a disk drive disposed in the drive cradle. | 04-15-2010 |
| 20100089126 | SUBSEA PIPELINE SERVICE SKID - Apparatus and methods are described for subsea pipeline servicing, including line-pack testing, physical integrity testing, recovery of damaged sections of pipelines, and product removal from subsea structures. In one embodiment of the invention, a subsea pipeline service skid is provided including at least one sample collection bladder affixed to the skid and in fluid communication with a skid mounted pump dimensioned to pull a sample from the subsea pipeline. In another embodiment, a product removal bladder is provided for removal of the hydrocarbons from a subsea structure. | 04-15-2010 |
| 20100132436 | 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 vapors may be recovered at the dispensing point nozzle by a vapor recovery system. A properly functioning vapor recovery system recovers approximately one unit volume of vapor for every unit volume of dispensed liquid fuel. The ratio of recovered vapor to dispensed fuel is termed the A/L ratio, which should ideally be approximately equal to one (1). The A/L ratio, and thus the proper functioning of the vapor recovery system, may be determined by measuring liquid fuel flow and return vapor flow (using a vapor flow sensor) on a nozzle-by-nozzle basis. The disclosed methods and apparatus provide for the determination of A/L ratios for individual nozzles using a reduced number of vapor flow sensors. The disclosed methods and apparatus also provide for the determination of fuel dispensing system vapor containment integrity, and the differentiation of true vapor recovery failures as opposed to false failures resulting from the refueling of vehicles provided with onboard vapor recovery systems. | 06-03-2010 |
| 20100139370 | APPARATUS AND METHOD FOR CONDITION MONITORING OF A COMPONENT OR STRUCTURE - An apparatus ( | 06-10-2010 |
| 20100139371 | 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 vapors may be recovered at the dispensing point nozzle by a vapor recovery system. A properly functioning vapor recovery system recovers approximately one unit volume of vapor for every unit volume of dispensed liquid fuel. The ratio of recovered vapor to dispensed fuel is termed the A/L ratio, which should ideally be approximately equal to one (1). The A/L ratio, and thus the proper functioning of the vapor recovery system, may be determined by measuring liquid fuel flow and return vapor flow (using a vapor flow sensor) on a nozzle-by-nozzle basis. The disclosed methods and apparatus provide for the determination of A/L ratios for individual nozzles using a reduced number of vapor flow sensors. The disclosed methods and apparatus also provide for the determination of fuel dispensing system vapor containment integrity, and the differentiation of true vapor recovery failures as opposed to false failures resulting from the refueling of vehicles provided with onboard vapor recovery systems. | 06-10-2010 |
| 20100147054 | LOSS DETECTION SYSTEM FOR OPEN CHANNEL NETWORKS - The invention discloses a loss detection system to determine and monitor containment losses for open channel networks. One exemplary method comprises monitoring a flow of liquid from an open channel into a pool, the open channel comprising channel banks and a bed, controlling the flow of liquid such that a level of liquid within the pool is constant, and determining theft loss of liquid based on the monitored flow of liquid. | 06-17-2010 |
| 20100206051 | SYSTEM AND METHOD FOR DETECTING A LEAK IN AN AIR BED - A leak detection method for an air bed having an air chamber comprises adjusting the air chamber to a predetermined pressure level, sensing a first pressure value of the air chamber after a first time interval, sensing a second pressure value of the air chamber after a second time interval, determining a pressure change in the air chamber, detecting whether the air chamber is leaking by comparing the pressure change with a second pressure value, and displaying a leak detection indicator. In one embodiment, the second pressure value is a pressure change in a second air chamber. In another embodiment, the second pressure value is an expected pressure change of the air chamber that is calculated based upon changes in ambient temperature and barometric pressure. | 08-19-2010 |
| 20100218597 | SENSING CABLE - A covered cable suitable for detecting the presence of corrosive liquids is disclosed. In an embodiment the cable includes two sensing wires wrapped around a core member, at least one of the sensing wires being surrounded by a non-conductive surface layer. In an alternate embodiment the cable includes two sensing wires wrapped around a core member, the sensing wires and core member being encapsulated by a non-conductive surface layer. Preferably, the cable includes insulating wires for detecting the location of a leak. When a corrosive liquid contacts the sensing wires of the cable an electrical connection is created between them. An interrupted covering covers the sensor cable. The resulting covered sensor cable is useful in wicking applications, and/or providing enhanced UV radiation resistance. | 09-02-2010 |
| 20100242576 | UNDERWATER METHOD AND APPARATUS FOR DETECTING LEAKS IN A METALLIC TANK OR PIT LINER PLATE - A leak detecting apparatus for detecting flaws in a surface submerged in liquid is provided that includes a vacuum head for contacting the surface and forming a vacuum chamber filled with liquid between the surface and the vacuum head, the vacuum head including a multi-surface elastomer seal for contacting the surface; and a vacuum generator for pulling gas through a flaw in the surface into the vacuum head and to the gas separation chamber so as to displace the liquid from the gas separation chamber. A method for detecting flaws in a surface submerged in liquid is also provided. | 09-30-2010 |
| 20100281952 | DIFFERENTIAL COMPARATIVE PRESSURE MONITORING SYSTEM - A differential comparative pressure monitoring system ( | 11-11-2010 |
| 20100288017 | AQUEOUS CHEMICAL LEAK DETECTION CABLE - Disclosed are aqueous chemical leak detection cables that provide protection to sensor wires by using a conductive polymer coating that is resistant to corrosion by aqueous chemicals. In addition, non-conductive, liquid pervious layers may surround one or more of the sensor wires to assist in preventing false detection of a aqueous chemical leak as a result of various non-liquid contaminants. The non-conductive, liquid pervious layer may comprise braided, non-hydroscopic, non-conductive fibers, or a continuous, non-conductive pervious coating. | 11-18-2010 |
| 20110000282 | PASSIVE GLOVEBOX GLOVE LEAK DETECTOR - A passive leak detector for a glovebox glove is disclosed. Pressure drop inside the glove is measured overnight to determine if there is a leak in the glovebox glove. | 01-06-2011 |
| 20110000283 | Method for Manufacturing and Testing Micro Fluidic Chips - Aspects of the invention include methods and devices for manufacturing and testing microfluidic chips having at least one capillary for through-flow of a fluid. | 01-06-2011 |
| 20110048110 | AQUEOUS CHEMICAL LEAK DETECTION CABLE - Disclosed are aqueous chemical leak detection cables that provide protection to sensor wires by using a conductive polymer coating that is resistant to corrosion by aqueous chemicals. In addition, non-conductive, liquid pervious layers may surround one or more of the sensor wires to assist in preventing false detection of an aqueous chemical leak as a result of various non-liquid contaminants. The non-conductive, liquid pervious layer may comprise spirally wrapped or braided, non-hydroscopic, non-conductive monofilament fibers, or a continuous, non-conductive pervious coating. | 03-03-2011 |
| 20110056274 | METHOD AND DEVICE FOR TESTING A CONTAINER FOR LEAKS - The invention pertains to a leak-testing method for a test container comprising:
| 03-10-2011 |
| 20110067486 | Leak Detection Apparatus - An apparatus and method for liquid leak detection includes a first and second flexible members each constructed of an electrically conductive material that is in a normally open circuit state. Also included is a liquid wicking permeable surrounding sidewall that is positioned adjacent to the first and second flexible members, the liquid permeable surrounding sidewall is constructed of a non electrically conductive material. Operationally, the liquid wicking permeable surrounding sidewall becomes electrically conductive when a liquid is present in the liquid wicking permeable surrounding sidewall, facilitating the first and second flexible members to move to a closed circuit state that results in a perceptible output. Additionally, included is a liquid permeable planar web reinforcing element that is oriented adjacent to the liquid wicking permeable surrounding sidewall wherein the liquid permeable planar web reinforcing element is oppositely disposed of the first and second flexible members. | 03-24-2011 |
| 20110067487 | Method for testing the operability of a tank shutoff valve of a fuel tank system - A method for testing the operability of a tank shutoff valve of a fuel tank system which is controlled by valves includes performing defined triggering of the tank shutoff valve and simultaneous introduction of an overpressure or partial vacuum into the fuel tank system via a pressure source, and the operability of the tank shutoff valve is determined on the basis of a variable which characterizes the introduction of the overpressure or partial vacuum. | 03-24-2011 |
| 20110100095 | Passive Glovebox Glove Leak Detector - A passive leak detector for a glovebox glove is disclosed. Pressure drop inside the glove is measured overnight to determine if there is a leak in the glovebox glove. Additionally, the glovebox is fire retardant and shields against radiation. | 05-05-2011 |
| 20110126613 | WATERPROOF ELECTRONIC DEVICE WITH TEST STRUCTURE AND WATER-LEAK TEST FIXTURE AND METHOD THEREOF - The present invention is directed to a waterproof electronic device with a test structure, including a test opening, a sealing structure and a fixation structure. The test opening is arranged on a housing of the waterproof electronic device, and is used for injecting a test fluid for detecting water leak. The sealing structure is arranged on the housing or a test fixture, and is used for holding a sealing element such that the waterproof electronic device and the test fixture may be sealed to each other when performing a leak test. The fixation structure is used for fixing the test fixture on the waterproof electronic device. | 06-02-2011 |
| 20110138883 | INJECTOR FLOW MEASUREMENT FOR FUEL CELL APPLICATIONS - A method for determining the amount of fuel flow from a high pressure gas tank to the anode side of a fuel cell stack through pulsed injector. The anode sub-system pressure is measured just before the injector pulse and just after injector pulse and a difference between the pressures is determined. The difference between the pressures, the volume of the anode sub-system, the ideal gas constant, the anode sub-system temperature, the fuel consumed from the reaction in the fuel cell stack during the injection event and the fuel cross-over through membranes in the fuel cells of the fuel cell stack are used to determine the amount of hydrogen gas injected by the injector. | 06-16-2011 |
| 20110138884 | Portable multi-function system for testing protective devices - An apparatus for testing a protective mask. The apparatus includes a testing unit for testing a protective mask. The testing unit includes a headform upon which a protective mask to be tested is mounted. The testing unit is configured to take a sample of the challenge from two different locations about the protective mask. The testing unit may also be configured to inflate and deflate a neck seal protective mask when mounted on the headform prior to performing a mask leakage test to eliminate or significantly reduce pockets or folds that may hide a leak. | 06-16-2011 |
| 20110174058 | INTEGRATION MANUFACTURING PROCESS FOR MEMS DEVICE - A method for manufacturing an MEMS device is provided. The method includes steps of a) providing a first substrate having a concavity located thereon, b) providing a second substrate having a connecting area and an actuating area respectively located thereon, c) forming plural microstructures in the actuating area, d) mounting a conducting element in the connecting area and the actuating area, e) forming an insulating layer on the conducting element and f) connecting the first substrate to the connecting area to form the MEMS device. The concavity contains the plural microstructures. | 07-21-2011 |
| 20110174059 | LEAKAGE DIAGNOSIS APPARATUS, LEAKAGE DIAGNOSIS METHOD, AND REFRIGERATION APPARATUS - A leakage diagnosis apparatus for diagnosing presence/absence of refrigerant leakage in a refrigerant circuit performing a refrigeration cycle, wherein refrigerant leakage diagnosis using the amount of refrigerant exergy loss in a circuit component of the refrigerant circuit is realized. In a leakage diagnosis apparatus, an exergy calculation section calculates a leakage index value which changes in accordance with the amount of refrigerant leaking out of a refrigerant circuit based on the amount of refrigerant exergy loss in the circuit component. Then, a leakage determination section determines whether there is refrigerant leakage in the refrigerant circuit based on the leakage index value calculated by the exergy calculation section. | 07-21-2011 |
| 20110185790 | Leakage Detection Method and System Using Camera Image - Provided is a leakage detection system and method using an image that may detect a leakage of high temperature high pressure steam using an image. The leakage detection method may include: obtaining an image of a target where a leakage of high temperature high pressure steam occurs; detecting, in the obtained image, an edge image before the leakage occurs and an edge image after the leakage occurs; detecting only a leakage edge image by comparing the edge image before the leakage occurs and the edge image after the leakage occurs; removing noise from the leakage edge image; and displaying the leakage edge image in which the noise is removed. | 08-04-2011 |
| 20110226043 | REFERENCE LEAKAGE DEVICE FOR LEAK CALIBRATION - Reference leakage device ( | 09-22-2011 |
| 20110232371 | PRESSURE TESTER FOR PRINTHEAD INTEGRATED CIRCUIT CARRIER - A pressure-based tester for testing an integrity of a printhead integrated circuit (IC) carrier includes a housing assembly; a cradle assembly coupled to the housing assembly and adapted to receive the printhead IC carrier, the cradle assembly further defining spouts adapted to engage with the printhead IC carrier; a regulated gas supply arranged in the housing assembly; a first gas supply line in fluid communication with the regulated gas supply; a pneumatic retaining mechanism in fluid communication with the gas supply via the first gas supply line, the pneumatic retaining mechanism for retaining the carrier in fluid communication with the spouts during testing of the platform assembly; a second gas supply line in fluid communication with the regulated gas supply, the second gas supply line being separated from the first gas supply line by a pressure regulator, the second gas supply line for supplying gas to the spouts; a pressure sensor for measuring a gas pressure at each spout and generating a signal indicative of the measured gas pressure; and a control system for controlling the regulated gas supply and the pneumatic retaining mechanism. The control system is further configured to receive the signal generated by the pressure sensor to determine the presence of any decay in the gas pressure at each spout. | 09-29-2011 |
| 20110247397 | INFUSION DEVICE PROVIDED WITH A WATER-TIGHT COVER - The invention relates to an infusion device for therapeutic use comprising a water-tight cover in the form of a housing, a housing part or a receptacle for holding said infusion device and a control system which is used for controlling the cover water tightness and comprises c) a medium arranged in the cover and characterized by at least one physical or chemical quantity variable according to the cover water tightness and d) an information system which automatically transmits at least one information signal when said quantity changes in such a way that the loss of the cover water tightness is indicated. | 10-13-2011 |
| 20110271743 | Leak Sensor For Flowing Electrolyte Batteries - A leak detection system for a flowing electrolyte battery comprising a containment member associated with at least one of a stack of a flowing electrolyte battery and an electrolyte reservoir of a flowing electrolyte battery and a sensing member for sensing a fluid leak within the containment member. | 11-10-2011 |
| 20110302995 | Wide range fluid leak detector and flow meter - A flowmeter is provided with a solid-state sensor technology for increasing the accuracy and efficiency of fluid flow monitoring and leak detection in the irrigation industry and other cost-sensitive flow-critical applications. The device can monitor and detect usage of fluids such as water more accurately and economically than presently possible to help eliminate waste and ensure correct billing. Measurement can be over an optimized narrow range or can be automatically switched to cover consecutive ranges from leakage to gross fluid conduit faults. With its minimal component count, ease of assembly, independence from the specifics of its housing, low maintenance needs, and its interchangeability this device can serve a wide range of metering needs from low end leak monitoring to standard flow measurement. | 12-15-2011 |
| 20120000272 | Device for Controlling Leaks From an Endoscope - The invention relates to a device for controlling leaks from an endoscope, connected to the operating segment at the proximal end of the endoscope. The invention is characterised in that it comprises: a connection valve ( | 01-05-2012 |
| 20120042714 | HERMETICITY SENSOR AND RELATED METHOD - A hermeticity sensor for a device includes a beam positioned within a substantially hermetically sealed cavity. The beam includes a stress that changes in response to being exposed to ambient from outside the cavity. A related method is also provided. | 02-23-2012 |
| 20120073359 | Test head assembly for use in testing protective masks - An apparatus for use in testing a protective mask for leaks. The apparatus includes a test head assembly for supporting at least a portion of a protective mask to be tested for leaks. The test head assembly may be freestanding or it may be mounted directly on the mask tester. Preferably, the test head assembly includes a test head having a test space. The test space is operably associated with a mask tester such that a fluid from the test space is directed to the mask tester for analysis to determine if a leak exists in the mask. The test space is generally coextensive with the inner surface of the protective mask being tested. Although the test space is generally coextensive with the inner surface of the protective mask being tested, it is designed such that it has minimal volume to enhance the testing process by expediting test response time, reducing the time period it takes for a mask tester to reach one or more prerequisite test conditions (e.g., a predetermined vacuum), eliminate or greatly reduce lag time when the mask tester is operating in the probe mode (i.e., the mode used to isolate the location of a leak) and prevent dilution of challenge concentration. Preferably, the test is shaped to permit a protective mask to be readily mounted on the test head in a fluid tight manner. Preferably, the test head is formed from two or more removable sections to allow the size of the test head to be readily modified without replacing the entire test head. An optional perfect mask or test shroud may be mounted about the test head to ensure that the mask tester is not erroneously detecting leaks in a protective mask being tested. | 03-29-2012 |
| 20120167667 | GLOVE TESTING DEVICE AND METHOD - The present invention relates to a glove testing device and method for air testing of gloves particularly of the insulative type used by linemen and electricians. The device may be moved relative to the lengthwise direction of the glove to successively seal shut securely each portion of the glove passed by the device so that air trapped in the glove progressively inflates the glove. In particular, the glove may be rolled about the testing or spool device starting adjacent the glove's open mouth either by rotating the device or wrapping the glove or by a combination of these movements. The device may include cantilevered arms forming a lateral gap for lateral insertion of the glove's end portion and may have rounded outer surfaces that avoid placing sharp folds in the glove during the rolling operation. | 07-05-2012 |
| 20120210771 | SYSTEM AND METHOD FOR LEAK DETECTION IN EXTERNAL COOLING PAD - An externally-applied heat exchange pad has three layers laminated together, an inner and outer non-conductive layer and a middle conductive layer. A leak in the inner layer causes coolant to contact the middle layer and change impedance, which can be sensed and used as an indication of an impending total leak of the pad, | 08-23-2012 |
| 20120210772 | LEAKAGE TESTER UTILIZING PRESSURE - A portable, small-sized device is provided to accurately conduct a leakage test for a liquid volume meter such as a pipette. In operation, pipette P is connected to the device main body side via a tube. A command from a central processing unit causes a pump to perform a suctioning operation to depressurize the pipette P side to a predetermined pressure. Any pressure changes over a predetermined period of time are monitored by a pressure sensor. The central processing unit determines whether there is leakage from the pipette P, and displays a judgment result on a display unit. In particular, when a diaphragm pump is used as the pump, the pulsation of an air flow occurring in a suction operation is attenuated in a pressure vessel so as not to have harmful effects on either the inspection results or the pipette P side. | 08-23-2012 |
| 20120260721 | AQUEOUS CHEMICAL LEAK DETECTION CABLE - Disclosed are aqueous chemical leak detection cables that provide protection to sensor wires by using a conductive polymer coating that is resistant to corrosion by aqueous chemicals. In addition, non-conductive, liquid pervious layers may surround one or more of the sensor wires to assist in preventing false detection of an aqueous chemical leak as a result of various non-liquid contaminants. The non-conductive, liquid pervious layer may comprise spirally wrapped or braided, non-hygroscopic, non-conductive monofilament fibers, or a continuous, non-conductive pervious coating. | 10-18-2012 |
| 20120266659 | Leak Detector and Process Control Therefor - The invention relates to a method for monitoring a leak detector comprising: a secondary vacuum pump designed to be connected to a primary vacuum pump, the secondary vacuum pump comprising a motor, a rotor and a stator, the said rotor being capable of being rotated in the stator by the motor when the motor is powered, and at least one information means capable of being powered electrically, in order to inform a user of the operating state of the leak detector, characterized in that, in the event of the motor power supply being cut off, the kinetic energy of rotation of the secondary vacuum pump rotor in the form of electrical power ( | 10-25-2012 |
| 20120291525 | TEST PRESSURISATION DEVICE FOR HOSE - A test pressurisation device ( | 11-22-2012 |
| 20120291526 | AQUEOUS CHEMICAL LEAK DETECTION CABLE - Disclosed are aqueous chemical leak detection cables that provide protection to sensor wires by using a conductive polymer coating that is resistant to corrosion by aqueous chemicals. In addition, non-conductive, liquid pervious layers may surround one or more of the sensor wires to assist in preventing false detection of a aqueous chemical leak as a result of various non-liquid contaminants. The non-conductive, liquid pervious layer may comprise braided, non-hygroscopic, non-conductive fibers, or a continuous, non-conductive pervious coating. | 11-22-2012 |
| 20120297863 | FILTER AND MEMBRANE DEFECT DETECTION SYSTEM - The present invention is directed to a method of locating leaks in a substrate ( | 11-29-2012 |
| 20120312077 | Dual Mode Water Leak Detector - A dual mode water leak detector is combined with a HIVAR air condition system or unit. The air conditioning unit or system uses chilled water for cooling or hot water or electric coils for heating and employs means for supplying heated or cooled air into a floor void and channeling return air to designated vents under the floor or through a false ceiling. In addition a water sensor includes an enclosed housing having a bottom or base and four electrical contacts extending through the base and positioned above the floor by about 2 mm by four rubber spacers or feet. In addition a first circuit connects a first and a second contact separated from one another by an airspace to a pair of banana clips for turning the HIVAR system off when water between the first and second contacts is completed due to the presence of water. A second circuit includes a switch and a 60K OHM resistor connecting that circuit to a first of the contacts and second of the contacts when the switch is in a closed position. | 12-13-2012 |
| 20120318047 | METHOD AND SYSTEM FOR DETERMINING VACUUM LEAKS - A method for detecting leaks within a vacuum system is described. The method may detect vacuum system leaks responsive to vacuum pump speed. The method can compensate for changes in barometric pressure so that a single leak threshold may be provided for all altitudes and barometric pressures. | 12-20-2012 |
| 20130047706 | SYSTEM AND METHOD FOR MEASURING A LEAKAGE AREA FOR CONSTRUCTING A SMOKE-VENTILATION APPARATUS - Disclosed are a method and system for measuring leakage area for construction of smoke control equipment. The invention provides a system for measuring a leakage area of a test room that can include: a chamber positioned in the test room and storing air compressed by a compressor; one or more pressure sensors configured to measure a pressure change of the test room when the compressed air in the chamber is discharged instantaneously; and a gauging means configured to measure an effective leakage area in the test room by using a pressure change value of the test room detected by the one or more pressure sensors. Embodiments of the invention can enable an accurate measurement of leakage area at low cost. | 02-28-2013 |
| 20130086978 | RESPIRATOR TEST ACCESSORY - A test accessory for testing a variety respirators. The accessory is designed to compliment existing equipment to provide a robust assessment of respirator performance. The accessory may include a head form having an inflatable bladder capable of fitting a variety of sizes of respirator masks. In some embodiments, the inflatable bladder does not rely on adhesives to effect a seal, thereby eliminating manufacturing and quality assurance steps. The test accessory may also include a detachable instrumentation module that may be removed from the accessory, enabling calibration and maintenance at a remote facility without need for transporting the entire unit. The module may also house a memory device that may be upgraded with calibration data and firmware during the calibration process. | 04-11-2013 |
| 20130091931 | 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 vapors may be recovered at the dispensing point nozzle by a vapor recovery system. A properly functioning vapor recovery system recovers approximately one unit volume of vapor for every unit volume of dispensed liquid fuel. The ratio of recovered vapor to dispensed fuel is termed the A/L ratio, which should ideally be approximately equal to one (1). The A/L ratio, and thus the proper functioning of the vapor recovery system, may be determined by measuring liquid fuel flow and return vapor flow (using a vapor flow sensor) on a nozzle-by-nozzle basis. The disclosed methods and apparatus provide for the determination of A/L ratios for individual nozzles using a reduced number of vapor flow sensors. The disclosed methods and apparatus also provide for the determination of fuel dispensing system vapor containment integrity, and the differentiation of true vapor recovery failures as opposed to false failures resulting from the refueling of vehicles provided with onboard vapor recovery systems. | 04-18-2013 |
| 20130167618 | METHOD FOR TESTING LEAK TIGHTNESS - In order to test water-bearing components for leak tightness, a coating ( | 07-04-2013 |
| 20130174648 | DIE COOLANT SYSTEM WITH AN INTEGRAL AND AUTOMATIC LEAK TEST - Systems and methods allow detection and location of die coolant leaks while a die is in a die cast machine and at operating temperature. The testing can be performed during normal down time of the die casting assembly and repeated as desired. Cooling circuits of the die can be tested in zones where zones are sorted to identify particular cooling circuits as having leaks as necessary. Valving, leak sensors, air decay units, and added machine control are provided in the die cooling system to enable onboard leak testing of the die while installed in the die casting machine. | 07-11-2013 |
| 20130219996 | METHOD OF REJECTING A DEFECTIVE UNIT DOSE POUCH FROM A MANUFACTURING LINE - An in-line method of rejecting composition-filled pouches having a defect such as a leak comprises inspecting a first composition-filled pouch. If a leak is detected, that pouch is rejected from the manufacturing process. The pouch adjacent to the leak is also rejected. | 08-29-2013 |
| 20130283890 | LASER INDICATOR FOR REMOTE MEASURING DEVICES AND METHOD THEREFOR - Provided is a device for use in locating the origin of a phenomenon of interest, including a sensor capable of detecting the presence of the phenomenon of interest and generating a detection signal in response thereto. The device also includes a phenomenon origin locator to monitor the detection signal and project light toward the origin when the detection signal satisfies a selected criteria level, thereby indicating the origin of the phenomenon of interest. | 10-31-2013 |
| 20130291624 | Speaker Leak Test System and Method - A speaker leak test system which quickly tests if a speaker enclosure is sealed properly. The speaker leak test system tests for air leaks in the speaker enclosure, which air leaks degrade the acoustic performance of the speaker. A vacuum (or pressure) source is connected through a vacuum hose to the speaker enclosure and vacuum is drawn. After a test vacuum level is reached, the mass air flow through the vacuum hose is measured. If the mass air flow does not exceed a pre-determined speaker dependent threshold for the speaker under test, the speaker is declared to be leak free. A bypass solenoid may reside in parallel with a mass air flow sensor to reach test vacuum quickly. This speaker leak test system is intended to be used in a prototyping and production environment and tests the speaker enclosure for leaks both quickly (e.g., less than five seconds) and accurately. | 11-07-2013 |
| 20130305815 | OIL LEAK DETECTION DEVICE - The present invention relates to an oil leak detection device. In an aspect, the oil leak detection device includes a base film layer 200 configured in a tape form, a pair of polymer lines 220, 230 formed on a top surface of the base film layer in parallel in a length direction, a pair of conductive lines 210, 240 formed on the top surface of the base film layer in parallel to the pair of polymer lines in the length direction, and an upper protection film layer 300 attached to the top surface of the base film layer and configured to have a plurality of sensing holes 310 formed at specific intervals in the length direction at locations through which only one of the pair of polymer lines is exposed. | 11-21-2013 |
| 20130312493 | ENGINE VENTILATION SYSTEM DIAGNOSTICS USING PRESSURE MEASUREMENT - A system comprising an engine including a chamber; an air intake coupled to the engine; a pressure sensor disposed in fluid communication with the air intake and disposed between the air intake and the chamber; and a processor configured to determine a breach in a ventilation system of the chamber in response to the pressure sensor. | 11-28-2013 |
| 20130327127 | LEAKAGE DETECTION DEVICE AND AIRCRAFT WITH A BLEED AIR SYSTEM AND AT LEAST ONE LEAKAGE DETECTION DEVICE - A leakage detection device comprises a cuff of an elastic material for being circumferentially wrapped around a region of a fluid-carrying conduit, wherein the cuff has an inner surface and an outer surface, through which at least one opening extends. At least one holder that comprises at least one guide element for guiding a measuring element over the opening is arranged at the edge of the opening. In this way, the measuring element can be positioned at a predetermined radial distance from the opening. | 12-12-2013 |
| 20140026644 | Sensing Events Affecting Liquid Flow in a Liquid Distribution System - By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information. | 01-30-2014 |
| 20140033801 | DIAGNOSING INJECTOR FAILURE VIA STACK VOLTAGE RESPONSE ANALYSIS - A system and method for determining whether an anode injector that injects hydrogen gas into an anode side of a fuel cell stack has failed. The method includes monitoring a voltage of the fuel cell stack and performing spectral analysis of the stack voltage to identify amplitude peaks in the stack voltage. The method further includes determining whether the spectral analysis of the stack voltage has identified an amplitude peak at a location where an amplitude peak should occur if the injector is operating properly. If no amplitude peak is identified at that location, then the method determines that the injector is not operating properly. If an amplitude peak is identified at that location, then the method compares the amplitude peak to the desired amplitude peak to identify if it is within a threshold to determine if the injector is operating properly. | 02-06-2014 |
| 20140053635 | DEVICE AND METHOD FOR MEASURING THE LEAKAGE RATE FROM REFERENCE PRESSURE LINES ONBOARD AN AIRCRAFT - A device for testing pneumatic circuits and for measuring the leakage rate from reference pressure lines onboard an aircraft, connected to a plenum chamber. The device includes a multi-pressure system, comprising several sensors each connected to a reference pressure line, first solenoid valves arranged on the input channels to this multi-pressure system, and connected to the reference pressure lines through first connectors, second solenoid valves arranged on the reference pressure lines, a pressure controller module that is connected to all the first solenoid valves through a second connector, an electronic board that controls the solenoid valves and calibration of the multi-pressure system, a control device. The invention also relates to a method making use of this device. | 02-27-2014 |
| 20140060160 | FUEL SYSTEM DIAGNOSTICS - Methods and systems are provided for detecting a fuel system leak. While a system vacuum pump is operated to supply vacuum to a vacuum consumption device, air exhausted from the vacuum pump is routed to a fuel system to apply positive pressure thereon. A fuel system leak is identified based on a rate of decay of the pressure applied from the vacuum pump. | 03-06-2014 |
| 20140076032 | WATERPROOF TESTING SYSTEM AND METHOD THEREOF - A waterproof testing system and a method thereof are provided. The method includes a master device controls a gas tester to adjust gas pressure for a sample; when the master device determines an effect pressure value is equal to a goal pressure value, the master device controls the gas tester to adjust gas pressure for the sample to the goal pressure value continuing in a first length of time; the master device determines whether the effect pressure value still maintains within a first pressure range; if yes, the master device controls the gas tester to stop adjusting the gas pressure for the sample; the master device determines whether the effect pressure value maintains within a second pressure range; if yes, the master device determines a time the effect pressure value maintains within the second pressure range exceeded a second length of time; and if yes, the waterproof test is successful. | 03-20-2014 |
| 20140076033 | METHOD FOR DETECTING A LEAK IN A FUEL DELIVERY SYSTEM - A leak detection system is provided for detecting a leak in a fuel line. A controller determines the presence of a leak in the fuel line based on an analysis of data obtained from individual leak tests performed on the fuel line, the individual leak tests may span one or more fuel delivery events. | 03-20-2014 |
| 20140123732 | LEAK DETECTION DEVICE AND METHOD FOR CHECKING OBJECTS FOR FLUID TIGHTNESS BY MEANS OF A LEAK DETECTION DEVICE - A leak detection device has a test chamber which, for evacuation, is connected to an evacuation pump device. Moreover, the test chamber is connected by a test gas line to a test gas pump device. The test gas pump device is connected, at its main inlet, to a test gas detector, such that a detection of test gas can take place using the counter-current principle. A valve device is arranged in the test gas line. This valve device has a test gas chamber for temporary storage of test gas removed from the test chamber. | 05-08-2014 |
| 20140190241 | Deflection Sensitive Coolant Activated Drain Plug Detection System For High Voltage Battery Packs - A battery pack with a drain plug and a circuit to detect when a liquid coolant has entered the battery pack. The drain plug includes a carrier defining a cavity internal to the carrier, an inlet disposed on a first surface of the carrier and an outlet disposed on a second surface of the carrier where the first surface and the second surface fluidly displaced from one another and coupled to the cavity. A soluble plug may be disposed within the cavity of the carrier; the soluble plug is configured to at least partially dissolve when fluidly coupled with a coolant allowing a portion of the coolant to flow between the inlet and the outlet and out of the battery pack. A strain gauge cooperative with the carrier such that a measured resistance change in the strain gauge corresponds to the soluble plug in contact with the liquid coolant. An associated circuit with the drain plug provides notification of the activation of the drain plug to the on-board computer systems. | 07-10-2014 |
| 20140238110 | LEAKAGE DETECTION IN A MEDICAL DEVICE - There is provided a method of channel leakage detection in a medical device having one or more channels and a housing having an internal volume surrounding at least a portion of the one or more channels, comprising the steps of (a) pressurizing one or more of the channels by introducing air or gas into the channel; and (b) detecting leakage by monitoring pressure increase in the internal volume of the housing. | 08-28-2014 |
| 20140250981 | SEAL TEST FIXTURE FOR A GAS TURBINE FUEL NOZZLE - A seal test fixture for a gas turbine fuel nozzle including an enclosed container for receiving a body of the gas turbine fuel nozzle including a seal; a test chamber coupled to the enclosed container for sealingly enclosing a flange of the gas turbine fuel nozzle and fluidly communicating with a leak path of the gas turbine fuel nozzle; an air injector opening through which pressurized air is injected into a main fuel chamber of the gas turbine fuel nozzle; and a pressure gauge for measuring an air pressure within the test chamber. | 09-11-2014 |
| 20140260548 | SYSTEM AND METHOD FOR DETECTING LEAKS IN A FLUID FILLED VESSEL - A leak detecting device for water filled vessel such as a swimming pool. An annular resilient seal having a central opening contacts the surface of the vessel under water and creates a seal between the resilient seal and the vessel. A rigid housing open in its interior is coupled to the resilient seal and has an opening for an inlet to deliver fluid into the interior of the housing, or couple a flow meter thereto to measure the fluid flow, or deliver a dye into the housing and through the central opening of the resilient seal. | 09-18-2014 |
| 20140260549 | FUEL SYSTEM LEAK DETECTION USING PASSIVE VALVES - Methods and systems for fuel system leak detection using passive canister vent valves are disclosed. In one example approach, a method comprises generating engine off vacuum or pressure in a fuel system for leak diagnostics, where the pressure and vacuum are held via first and second mechanical relief valves positioned in parallel with one another and without a valve holding current. | 09-18-2014 |
| 20140260550 | METHOD AND APPARATUS FOR CHECKING SEALING STATE OF HOUSING - A method of checking a sealing state of a housing includes starting an operation of a pressure sensor configured to measure an internal pressure of the housing. The method includes checking whether or not the housing is pressed. The method further includes checking the sealing state of the housing through checking a measured value of the pressure sensor under a pressure of the housing. An apparatus for checking a sealing state of a housing includes the housing configured to keep an internal space thereof sealed off from an outside, a pressure sensor configured to measure a pressure of the internal space, and an interface unit configured to provide to the pressure sensor a control signal that controls an operation of the pressure sensor, and provide pressure information detected through the pressure sensor. | 09-18-2014 |
| 20140260551 | SYSTEM, METHOD, AND APPARATUS FOR UTILIZING A PUMPING CASSETTE - The present invention involves, in some embodiments, systems and methods for performing an integrity test on a medical grade cassette that is configured to be used on a medical fluid handling system, wherein the cassette may be disposable and may comprise a membrane therein. The test may be configured to determine an error condition, such as detection of membrane leakage above a threshold value, and may in certain cases be implemented by a medical computer system. In certain cases the integrity test is a dry integrity test and in certain cases, the test is configured to determine a leakage rate of fluid through the membrane. | 09-18-2014 |
| 20140260552 | HVAC UNIT TEST APPARATUS AND METHOD THEREFOR - A method to test a heating ventilation and air conditioning (HVAC) unit for external leaks is disclosed. The HVAC unit includes a first and a second port and is coupled to an auxiliary air movement test system using one of the first or the second ports. The other of the first or the second ports of the HVAC unit is blocked. The auxiliary air movement test system includes an air movement device, a conduit, a flow velocity sensor, and a pressure sensor. The air movement device enables airflow into the HVAC unit through the conduit. The flow velocity sensor positioned within the conduit measures air velocity. The pressure sensor is positioned in proximity to a condensate drain of the HVAC unit that measures the pressure within the HVAC unit. The method disclosed determines external leaks in the HVAC unit if the measured air velocity exceeds a predefined air velocity at a predetermined pressure. | 09-18-2014 |
| 20140311222 | QUICK LEAK DETECTION ON DIMENSIONALLY STABLE/SLACK PACKAGING WITHOUT THE ADDITION OF TEST GAS - The invention relates to a device for leak detection on a test specimen, having an evacuable test chamber for the test specimen. The test chamber is provided with at least one wall area made of a flexible, in particular elastic material. For more precise leakage detection, the progression of the total pressure increase inside the test chamber is measured. | 10-23-2014 |
| 20140318220 | PRESSURE MEASURING DEVICE, PRESSURE MEASURING METHOD AND LEAKAGE INSPECTING DEVICE - A pressure measuring device includes: a tube fixable to a sample body along its surface; a pressure sensor and a closing plug both fixed inside the tube with a predetermined gap therebetween; a pipe for supplying reference pressure; a space defined between the sensor and the plug; and a pressure detecting hole penetrating the tube and communicating with the space. Since a volume of the space between the sensor and the plug is small, unsteady pressure fluctuations to be measured are prevented from being made unclear, thereby improving measurement accuracy. Additionally, the volume is set such that a Helmholtz resonance frequency of the space lies outside fluctuation frequencies of the unsteady pressure, thereby preventing superposition of pressure fluctuations by Helmholtz resonance on the unsteady pressure fluctuations to be measured, thus, further improving the measurement accuracy. | 10-30-2014 |
| 20140326051 | METHOD FOR DETECTING A LEAK ON A NON-RIGID TEST SPECIMEN - The invention relates to a simplified method for detecting leaks on a non-rigid test specimen, comprising the steps of: introducing the test specimen into a film chamber, lowering the pressure in the film chamber outside of said test specimen, and detecting a leak in the test specimen on the basis of a spatial change in the film of said film chamber. | 11-06-2014 |
| 20140338426 | EXHAUST GAS ANALYSIS SYSTEM, EXHAUST GAS COLLECTING DEVICE AND EXHAUST GAS LEAK DETECTING METHOD - An exhaust gas analysis system of the present invention includes: an exhaust gas collecting device for collecting exhaust gas from an exhaust pipe; and exhaust gas analysis equipment for analyzing the exhaust gas. The exhaust gas collecting device includes: an exhaust gas collecting part which is provided at an exhaust gas discharge port of the exhaust pipe, having an exhaust gas collecting port that is larger than the exhaust gas discharge port, for collecting air around the exhaust gas discharge port together with the exhaust gas; a main flow passage which is connected to the exhaust gas collecting part and in which the exhaust gas and the air collected from the exhaust gas collecting part flow; and an exhaust gas detecting mechanism for continuously detecting a predetermined component contained in the exhaust gas in the vicinity of the exhaust gas collecting port in the exhaust gas collecting part. | 11-20-2014 |
| 20140338427 | LEAK TEST METHOD AND LEAK TEST APPARATUS - A leak test method includes: reducing first pressure in an inspection space in a work and second pressure in a space in a master chamber; humidifying the inspection space in the work; and detecting a change in differential pressure between the inspection space in the work and the space in the master chamber, while the inspection space in the work is in a water-vapor saturated state. Also, in this leak test method, a leak in the inspection space in the work is detected from the change in the differential pressure. | 11-20-2014 |
| 20150007638 | Methods for gas leak detection and localization in populated areas using isotope ratio measurements - Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. Qualitative source identification is provided. These methods can be practiced individually or in any combination. | 01-08-2015 |
| 20150013435 | METHOD OF DETECTING DEFECTS IN HONEYCOMB STRUCTURAL BODY - In a method of detecting defects generated in a honeycomb structural body, both end sections of the honeycomb structural body is sealed along a flowing direction of exhaust gas. Air is supplied in the flowing direction of the exhaust gas from one end section to the other end section of the honeycomb structural body. Microphones are arranged at outer periphery of the honeycomb structural body and detect sounds of air leaking from a skin layer of the honeycomb structural body. A judgment step judges whether or not defects such as holes having not less than a predetermined diameter and cracks are generated on the basis of a magnitude of the detected sounds of the leaking air. | 01-15-2015 |
| 20150020578 | APPARATUS FOR INSPECTING LEAK OF BATTERY AND METHOD OF INSPECTING LEAK OF BATTERY USING THE APPARATUS - An apparatus for inspecting a leak of a battery, the apparatus including a jig on which a battery is mounted, a first plate comprising nozzle parts configured to inject air, a second plate configured to support the jig and the first plate, and a first driving unit positioned on the second plate and configured to move the jig, wherein the jig is moved by the first driving unit to a position at which the jig overlaps the first plate. | 01-22-2015 |
| 20150075259 | AUTOMATIC DETECTION OF LEAKS WITHIN AN IRRIGATION SYSTEM - The disclosure extends to apparatuses, methods, systems, and computer program products for generating and optimizing irrigation protocols. The disclosure also extends to a system and method for the detection of leaks in an irrigation system during operation in accordance with the disclosed methods, systems, and computer program products for optimizing water usage in growing plants for yard and crops. | 03-19-2015 |
| 20150075260 | 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 vapors may be recovered at the dispensing point nozzle by a vapor recovery system. A properly functioning vapor recovery system recovers approximately one unit volume of vapor for every unit volume of dispensed liquid fuel. The ratio of recovered vapor to dispensed fuel is termed the A/L ratio, which should ideally be approximately equal to one (1). The A/L ratio, and thus the proper functioning of the vapor recovery system, may be determined by measuring liquid fuel flow and return vapor flow (using a vapor flow sensor) on a nozzle-by-nozzle basis. The disclosed methods and apparatus provide for the determination of A/L ratios for individual nozzles using a reduced number of vapor flow sensors. The disclosed methods and apparatus also provide for the determination of fuel dispensing system vapor containment integrity, and the differentiation of true vapor recovery failures as opposed to false failures resulting from the refueling of vehicles provided with onboard vapor recovery systems. | 03-19-2015 |
| 20150082866 | SERVO CONTROLLED EVAP LEAK DETECTION SYSTEM - A method and system for testing an evaporative emission control system for leaks. The method begins by setting a variable reference orifice to a preselected diameter. Then, a vacuum pump evacuates a reference volume in the vicinity of the variable reference orifice. The reference volume is defined by the vacuum pump, and the reference orifice. Then, after a specified evacuation time, the method determines a pressure in the reference volume. That pressure is stored as the threshold test value. The method continues by evacuating the entire EVAP system for a predetermined time. A leak can then be identified if after the evacuation, the system pressure falls at least to the threshold test value. Switching the vacuum pump between the first and second positions is accomplished with a changeover valve having parallel airways configured for evacuating a small volume to the reference orifice and also evacuating the entire EVAP system. | 03-26-2015 |
| 20150082867 | PERITONEAL DIALYSIS MACHINE - A method for operating a dialysis cassette including a flexible membrane that covers a pump chamber includes allowing a source of fluid to fluidly communicate with the pump chamber of the dialysis cassette, filling the pump chamber with the fluid from the source, mechanically extending the flexible membrane into the pump chamber with a piston head to expel the fluid from the pump chamber through a flow path, and directly sensing a pressure of the fluid flowing through the flow path at a location of the dialysis cassette adjacent to the pump chamber and using the sensed pressure to perform a test prior to delivering fluid to a patient. | 03-26-2015 |
| 20150090005 | Leak Detection in Composite Structures - A leak through the thickness of a structure is detected from one side of the structure using a leak detection layer. The leak detection layer exhibits visually observable changes when exposed to an air leak. | 04-02-2015 |
| 20150114089 | FUEL SYSTEM LEAK CHECK BASED ON FUEL REID VAPOR PRESSURE - A method for an evaporative emissions leak test, comprising: adjusting a pressure threshold based on a fuel volatility of a fuel contained in a fuel tank; and performing the evaporative emissions leak test based on the adjusted pressure threshold. By determining fuel volatility and adjusting a pressure threshold based on the fuel volatility, a more robust and accurate evaporative emissions leak test may be employed without adding additional components to a fuel system. | 04-30-2015 |
| 20150114090 | MOBILE DEVICE AND WATERPROOF TEST METHOD - Provided is a mobile device. The mobile device includes a battery cover having an LED hole with a size to allow at least one portion of the LED lens to pass therethrough, a lens support part disposed under the battery cover while supporting a portion of a lower surface of the LED lens, the lens support part having a ventilation hole with a predetermined size, an LED device generating light emitted through the LED lens, a waterproof tape disposed between a lower portion of the battery cover and the lens support part to prevent moisture from being penetrated, and an air vent filter which is a member allowing air to be ventilated through the ventilation hole, the air vent filter being disposed under the lens support part. | 04-30-2015 |
| 20150135803 | MANIFOLD ASSEMBLY FOR A PORTABLE LEAK TESTER - A manifold assembly for a portable leak tester includes a manifold housing defining a fluid inlet, a fluid outlet, a pressure port, and a fluid passage. The fluid passage connects the fluid inlet, the pressure port, and the fluid outlet in fluid communication. A supply control valve is mounted to the manifold housing. The supply control valve is operable to open and close fluid communication through the fluid passage, between the fluid inlet and the fluid outlet. A pressure transducer is coupled to the pressure port. The pressure transducer is operable to sense a fluid pressure in the fluid passage. A manifold controller is mounted to and supported by the manifold housing, and is in communication with the supply control valve and the pressure transducer. The manifold controller includes all software and hardware necessary to control the supply control valve, the pressure transducer, and to communicate with a testing controller. | 05-21-2015 |
| 20150135804 | APPARATUS AND METHOD TO CHECK EXTRACORPOREAL CIRCUIT - An extracorporeal treatment assembly including a pump and a controller wherein an extracorporeal circuit is mounted to the assembly, the controller causes the assembly to: control the pump to pump liquid through the passage and the flow coupling; collect actual fluid pressure data; store circuit type data uniquely corresponding to a certain type of extracorporeal circuit; determine a dimension of the certain type of extracorporeal circuit; determine an expected fluid pressure for the certain type of extracorporeal circuit; based on a comparison of the actual fluid pressure data and the expected fluid pressure, determine whether the certain type of extracorporeal circuit corresponds to the actual extracorporeal circuit. | 05-21-2015 |
| 20150135805 | FUEL VAPOR LEAKAGE DETECTION DEVICE - A first housing has a canister passage communicating a first interior with a canister. A second housing has an atmospheric passage communicating a second interior with an atmosphere. A switching valve is accommodated in the first housing to switch communication of the canister passage with selectively one of a pressure detection passage and the atmospheric passage. A switching valve bypass passage communicates the canister passage with the pressure detection passage and bypasses the switching valve. A partition member separates the first interior from the second interior and has a communication hole communicating the first interior with the second interior. A contact member is equipped to an end of the partition member and is in contact with at least one of the first housing and the second housing. The partition member forms a clearance with the first housing and the second housing. | 05-21-2015 |
| 20150323411 | METHOD AND DEVICE FOR DETERMINING AND/OR MONITORING THE AIR TIGHTNESS OF AN ENCLOSED ROOM - The invention relates to a method for determining and/or monitoring the air tightness of an enclosed room ( | 11-12-2015 |
| 20150338314 | System Using an HVAC Air Handler and Thermostat for Building Energy Loss Testing, Monitoring and Cost Control - An improved HVAC air handler and control system adapted for measuring and monitoring operating characteristics, the leakage of supply and return ducts to which it is connected, the infiltration leakage of the building it serves, the blockage of air return paths and the watts drawn and air flow generated by its blower. Leakages are measured by blocking outlets of all supply ducts or all return ducts, opening one side of the air handler to outdoor air, running the air handler blower, and measuring the air flow. Airflow may be measured by opening or closing orifices mounted in plenums attached to the air hander or built into the air handler cabinet, or by varying the speed of the blower motor, in connection with an integrated manometer. Thermostat firmware controls all functions. | 11-26-2015 |
| 20150346050 | MULTILAYER ENCAPSULATION WITH INTEGRATED GAS PERMEATION SENSOR - Barrier stacks according to embodiments of the present invention provide early indication of barrier failure. In some embodiments, the barrier stack includes one or more dyads comprising a first polymer decoupling layer and a second barrier layer. The barrier stack includes one or more integrated gas permeation sensors between the first and second layers of one of the dyads, or between two of the dyads. In some embodiments, the barrier stack can include a primary barrier stack including one or more dyads, one or more integrated gas permeation sensor laterally spaced apart from the primary barrier stack, and a secondary barrier stack including one or more dyads on both the primary stack and the integrated gas permeation sensor(s). | 12-03-2015 |
| 20150355046 | SYSTEM AND METHOD FOR DETECTING LEAKS IN A FLUID FILLED VESSEL - A leak detecting device for water filled vessel such as a swimming pool. An annular resilient seal having a central opening contacts the surface of the vessel under water and creates a seal between the resilient seal and the vessel. A rigid housing open in its interior is coupled to the resilient seal and has an opening for an inlet to deliver fluid into the interior of the housing, or couple a flow meter thereto to measure the fluid flow, or deliver a dye into the housing and through the central opening of the resilient seal. | 12-10-2015 |
| 20150362397 | DEVICE FOR DETECTING LEAKAGE OF ACIDIC SOLUTION - The present invention relates to a device for detecting a leakage of an acidic solution, and more particularly to a device for detecting a leakage of a poisonous acidic solution such as sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, etc. To this end, the device according to the present invention comprises: a base film layer; a pair of conductive lines formed lengthwise in parallel with each other on the upper surface of the base film layer; and a coating layer made of an acid-soluble material applied to the upper surface of the base film layer so as to cover the conductive lines. | 12-17-2015 |
| 20150369691 | LEAK TEST SYSTEM AND METHOD FOR TESTING SEMI-FINISHED PRODUCT OF SPEAKER - A leak test system and a leak test method are provided for testing whether a semi-finished product of a speaker has a leak. The semi-finished product of the speaker includes a case. An interface is installed on a surface of the case. The leak test system includes a covering element, a vacuum generator, and a pressure gauge. The covering element is attached on the surface of the case, so that the interface of the semi-finished product of the speaker is covered by the covering element. A negative pressure value of the covering element is generated by the vacuum generator. If the equilibrium pressure value is lower than a default negative pressure value, the leak test system judges that the semi-finished product of the speaker has the leak. Consequently, the testing efficiency is enhanced. | 12-24-2015 |
| 20150369692 | CLOSE-TYPE SPEAKER LEAK TEST SYSTEM AND METHOD - A close-type speaker leak test system includes a first chamber, a second chamber, a third chamber, a fourth chamber, a vacuum generator, and a differential pressure gauge. Firstly, a negative pressure value of the first chamber and the second chamber is generated by the vacuum generator. A standard close-type speaker is placed within the third chamber, and the first chamber and the third chamber are in communication with each other. An under-test close-type speaker is placed within a fourth chamber, and the second chamber and the fourth chamber are in communication with each other. A pressure difference value between the third chamber and the fourth chamber is measured by the differential pressure gauge. If the pressure difference value is larger than a predetermined value, the under-test close-type speaker has the leak. Consequently, the misjudgment is reduced, and the testing efficiency is enhanced. | 12-24-2015 |
| 20160018282 | Refrigerant Leak Locating Device - A refrigerant leak locating device taps into and distributes a dye into a refrigerant line to facilitating locating a leak in the refrigerant line. The device includes a housing having a first section selectively separable from a second section. Each of a pair of channels extends into a respective one of the first section and the second section. The channels are aligned defining a conduit through the housing. A screw has a pointed end extendable into the conduit when the screw is fully inserted into the housing wherein the pointed end pierces a refrigerant line positioned in the conduit. A tube extends into the housing having a first end is in fluid communication with the conduit. A dye is positioned in the tube wherein the dye is introduced into the refrigerant line when the pointed end of the screw pierces the refrigerant line. | 01-21-2016 |
| 20160041061 | ENGINE VENTILATION SYSTEM DIAGNOSTICS USING PRESSURE MEASUREMENT - A system comprising an engine including a chamber; an air intake coupled to the engine; a pressure sensor disposed in fluid communication with the air intake and disposed between the air intake and the chamber; and a processor configured to determine a breach in a ventilation system of the chamber in response to the pressure sensor. | 02-11-2016 |
| 20160061802 | METHOD AND SYSTEM FOR DETERMINING THE VOLATILITY OF A FUEL - It is proposed a method for determining the volatility of fuel in a fuel storage system, the method comprising:
| 03-03-2016 |
| 20160076965 | METHODS AND APPARATUS FOR CHECKING EMITTER BONDS IN AN IRRIGATION DRIP LINE - Methods and apparatus for checking emitter bonds in an irrigation drip line and for manufacturing drip line in a manner that allows the bond between the in-line emitter and surrounding conduit to be checked. In one form, a downstream in-line vacuum tester is provided for monitoring the amount of air escaping from outlet openings in the drip line to detect excessive air associated with poorly bonded emitters. | 03-17-2016 |
| 20160081531 | ENDOSCOPE LEAK INSPECTION APPARATUS - An endoscope leak inspection apparatus includes an endoscope connecting section communicably connected to an inside of an endoscope, a gas feed section that communicates with the endoscope connecting section and feeds gas, a measuring section that measures an internal pressure of the endoscope, an endoscope-information recognizing section that recognizes serial numbers uniquely allocated to individual endoscopes, a storing section that stores the serial numbers and measurement results of the measuring section in association with each other, a threshold setting section that sets a threshold on the basis of measurement results in past having the same serial number stored in the storing section, and a leak determining section that compares the threshold and a measurement result by the measuring section and determines presence or absence of a leak of the endoscope. | 03-24-2016 |
| 20160084730 | ULTRASONIC TESTING DEVICE AND ULTRASONIC TESTING METHOD - An ultrasonic testing device includes: a liquid tank that stores the liquid into which the differential casing is to be immersed; a workpiece holder that holds the differential casing and immerses the differential casing into the liquid in the liquid tank; an ultrasonic probe that conducts an ultrasonic testing of the welded part of the differential casing by irradiating the ultrasonic wave to the welded part and receiving a reflected wave; an image processing module that generates an ultrasonic image based on the reflected wave received by the ultrasonic probe; and a replacer that replaces gas inside an air gap formed at a weld toe of the welded part with test liquid. The replacer replaces the gas inside the air gap by the test liquid before the ultrasonic probe irradiates the ultrasonic wave. | 03-24-2016 |
| 20160091388 | EFFECTIVE STRUCTURAL HEALTH MONITORING - A system is described for performing structural health monitoring of an object under study. The system comprises a hollow cavity structure comprising one or more cavities obtained using additive manufacturing. The cavity structure is sealable from its environment and forms an integral part of the object under study. The cavity structure furthermore is connectable to a pressure sensor for sensing a pressure in the cavity structure. | 03-31-2016 |
| 20160096308 | STENT THERMOFORMING APPARATUS AND METHODS - A medical stent mold includes a tube having an interior passage sized and dimensioned to receive a stent assembly disposed at least partially about a central portion of a stent balloon. The medical stent mold may also include a housing forming a chamber through which the tube extends. The tube may include a thermally conductive material and may have a body portion that extends within the chamber and an end portion that is proximate the body portion and that extends away from the housing. An inner diameter of the end portion of the tube is greater than an inner diameter of the body portion of the tube. Forced convection may be used to quickly heat and cool the tube. Methods of increasing retention of an expandable stent assembly on a stent balloon and of detecting a leak in a stent balloon are also included. | 04-07-2016 |
| 20160097695 | MATURATION MONITORING APPARATUS AND METHODS - The invention provides an apparatus and a method to monitor fluid loss from one or more casks ( | 04-07-2016 |
| 20160109322 | LEAK DETECTION USING ACOUSTIC WAVE TRANSDUCER - The present disclosure relates to a leak detection apparatus that includes an acoustic wave actuator mounted within a hermetically sealed chamber. The hermetically sealed chamber isolates a fluid medium from an external atmosphere and the acoustic wave actuator propagates an acoustic wave through the fluid medium. The apparatus further includes an acoustic wave transducer mounted within the hermetically sealed chamber and a comparison module. The acoustic wave transducer detects fluid pressure wave data related to the acoustic wave. The comparison module calculates an acoustic velocity based on the fluid pressure wave data and compares the acoustic velocity to a predetermined threshold velocity in order to recognize leaks in the hermetically sealed chamber. | 04-21-2016 |
| 20160146648 | SENSING EVENTS AFFECTING LIQUID FLOW IN A LIQUID DISTRIBUTION SYSTEM - By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information. | 05-26-2016 |
| 20160161357 | MEASURING MOISTURE LEAKAGE THROUGH LIQUID-CARRYING HARDWARE - Embodiments of the present invention provide moisture measuring systems and methods. According to one embodiment of the present invention, a sealable compartment is used in which a specimen containing liquid can be inserted, such that all of the specimen is contained within the compartment. The relative humidity in the compartment is measured over a duration of time, which can be used to calculate the amount of liquid leaked by the specimen. Embodiments of the present invention can be utilized, for example, to calculate the leakage rate of water-carrying hardware of a cooling system, without having to create a membrane or other isolated sample of materials. | 06-09-2016 |
| 20160166859 | TESTING A MASK SEAL | 06-16-2016 |
| 20160169766 | LEAKAGE DETERMINING METHOD, SUBSTRATE PROCESSING APPARATUS AND STORAGE MEDIUM | 06-16-2016 |
| 20160195459 | TESTING DEVICE FOR TESTING SEALS HAVING ANCHORING FEET | 07-07-2016 |
| 20160202137 | Method and Apparatus for Assessing Treatment Effectiveness of Tooth Sensitivity with an Oral Care Product | 07-14-2016 |
| 20180024025 | METHOD AND SYSTEM FOR TESTING AIRTIGHTNESS OF A BUILDING ENVELOPE | 01-25-2018 |
| 20190145439 | Leak Tester | 05-16-2019 |
| 20220136926 | LEAK DETECTION SYSTEM AND METHOD - The system can include installing a gas meter in a gas supply net. The system may also include determining, by the gas meter, a level of pressure within the gas meter. The system may also include determining, by the gas meter, a flow rate level within the gas meter. The gas meter determines where a leak exists based on the flow rate level and the level of pressure. The system may also include determining, by the gas meter, a location of the leak, and whether the leak is upstream or downstream from the gas meter. The location of the leak is determined by the level of the pressure and the flow rate level. The system can also include a head end configured at a set position. The gas meter can inform the head end of the location of the leak. | 05-05-2022 |
