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Measuring And Testing > With Fluid Pressure > Leakage

Leakage

Leakage patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

03/20/14 - 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...

03/20/14 - 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...

03/06/14 - 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...

02/27/14 - 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...

02/06/14 - 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...

01/30/14 - 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...

12/12/13 - 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...

11/28/13 - 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...

11/21/13 - 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...

11/07/13 - 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...

10/31/13 - 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...

08/29/13 - 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....

07/11/13 - 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...

07/04/13 - 20130167618 - Method for testing leak tightness
In order to test water-bearing components for leak tightness, a coating (19) is provided, which comprises a mixture made of a water-soluble base substance and a generator substance. Upon contact with water, the coating (19) releases an indicator gas. The indicator gas is detected by a sensor (13)....

04/18/13 - 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...

04/11/13 - 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...

02/28/13 - 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...

12/20/12 - 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....

12/13/12 - 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...

11/29/12 - 20120297863 - Filter and membrane defect detection system
The present invention is directed to a method of locating leaks in a substrate (30) having a first and a second surface wherein the substrate (30) is adapted for preventing the flow of a fluid, or components contained in the fluid, through the substrate (30) from the first surface to...

11/22/12 - 20120291525 - Test pressurisation device for hose
A test pressurisation device (100) for hose (1) includes a first pair of press/driving rolls (10, 12) between which the hose can be inserted, and a second pair of press/driving rolls (20, 22) between which the hose can be inserted. The first pair of press/driving rolls (10, 12) is arranged...

11/22/12 - 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...

10/25/12 - 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...

10/18/12 - 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...

08/23/12 - 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...

08/23/12 - 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...

07/05/12 - 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...

03/29/12 - 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....

03/01/12 - 20120047999 - Vane pump apparatus and leak check system having the same
An ECU determines whether condensed water is present at a rotor and vanes based on an electric current, which flows in an electric motor that drives the rotor. When the condensed water is determined to be present, the ECU drives the motor for a predetermined time period. When the condensed...

02/23/12 - 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....

01/05/12 - 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 (2) for connecting the device to the endoscope (1), said valve being connected to the...

12/15/11 - 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...

11/10/11 - 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....

10/13/11 - 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...

09/29/11 - 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...

09/22/11 - 20110226043 - Reference leakage device for leak calibration
Reference leakage device (1) for use in leakage detection of gas, comprises a membrane (5) adapted to be interposed between two environments having respective pressures pu and pa, where (I). The membrane has an orifice (6) adapted to determine a controlled gas flow depending on the pressure pu. The orifice...

08/04/11 - 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...

07/21/11 - 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...

07/21/11 - 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...

06/16/11 - 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...

06/16/11 - 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...

06/02/11 - 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....

05/05/11 - 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....

03/24/11 - 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,...

03/24/11 - 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...

03/10/11 - 20110056274 - Method and device for testing a container for leaks
The invention also pertains to a leak-testing device for a test container comprising an atmospheric-pressure chamber (5) intended to receive a test container (3), comprising a volatile organic compound trace sensor (7) with a fluid connection to the chamber (5), a decontamination means, and a processing unit (9) capable of...

03/03/11 - 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...

01/06/11 - 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....

01/06/11 - 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....

11/18/10 - 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...

11/11/10 - 20100281952 - Differential comparative pressure monitoring system
A differential comparative pressure monitoring system (10) for monitoring the structural integrity of a structure or component (30) comprises a pressure source (12); a first fluidic circuit (14), and a reference fluidic circuit (16) which are connected in parallel to the pressure source (12); and a monitoring device (18). The...