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| Number | Title | Issue Date |
| 8069705 | Method and apparatus for continuously monitoring interstitial regions in gasoline storage facilities and pipelines An underground storage system includes a primary containment unit and a secondary containment unit arranged to sealingly encompass the primary containment unit. The underground storage system further includes a leak detection system which is fluidly connected to the... | 12/06/2011 |
| 8056397 | System and method for testing fuel tank integrity The invention relates generally to a system and method for testing fuel evaporative systems, and more particularly to a stand-alone tank tester system (and method) for testing vehicle fuel tank integrity. Furthermore, a self-contained calibration tank with switchabl... | 11/15/2011 |
| 7963150 | Method to test for a leak in a fuel tank system A method to test for a leak in a fuel tank system of a motor vehicle includes a fuel tank is cut off during the overrun by means of at least one cutoff device, and the pressure, which builds up in the fuel tank within a specifiable time interval is acquired; if a sp... | 06/21/2011 |
| 7954361 | Method and apparatus for detecting tank leaks Method and apparatus for detecting tank leaks, in which a gas pressure acts on a fluid which is situated in a tank, and in which the gas pressure in the tank or tank system is changed, wherein a tank leak is detected by evaluation of a temporal profile of a sum pres... | 06/07/2011 |
| H2243 | Method and apparatus for providing leak-before-burst failure of a pressurized component In a pressure vessel, pressure fitting, or pressure component, service use may result in the propagation of fatigue cracks. According to embodiments, a leak channel may be designed and formed to cause a pressurized fluid nominally contained by the pressure member to... | 08/03/2010 |
| 7762122 | System and method of detecting air leakage in a VARTM process A method of detecting leakage from a preform used in a VARTM process includes providing a mold and bagging film suitable for use in the VARTM process; heating air; distributing hot air along an interface between an the bagging film and a surface of the mold; determi... | 07/27/2010 |
| 7752891 | Method for testing containers, use of the method, and a testing device A method and device for testing containers, the method calling for a difference in pressure to be generated between the pressure inside the container and the pressure immediately surrounding the container, the behavior of one of these pressures permitting the gas ti... | 07/13/2010 |
| 7752892 | Leak characterization apparatuses and methods for fluid storage containers According to the invention, an apparatus to characterize leaks in a fluid storage container is disclosed. The apparatus may include a valve coupler, a gas manifold and a processor. The valve coupler may couple the apparatus with a closed valve on the fluid storage c... | 07/13/2010 |
| 7739901 | System and method for detecting and quantifying changes in the mass content of liquid storage containers A storage tank leak detection system, including a quartz crystal type pressure transducer held at a constant temperature, a bubbler-based pressure sensor for reporting tank bottom pressure measurements to the transducer, a fluid surface measurement apparatus to repo... | 06/22/2010 |
| 7712352 | Method and apparatus for storage tank leak detection An intrinsically safe, precise, and cost effective storage tank leak detection system. Embodiments include a highly precise quartz crystal type pressure transducer, secured in a vacuum and held at a constant temperature. Said transducer is used in combination with d... | 05/11/2010 |
| 7707871 | Leak detection system with controlled differential pressure A system for detecting leaks in a unit. The novel system includes a first mechanism for injecting a first gas into an interior or an exterior of the unit, a second mechanism for sampling gas from an exterior or an interior of the unit to determine if the first gas h... | 05/04/2010 |
| 7707870 | 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 o... | 05/04/2010 |
| 7647820 | Device for detecting leakage of liquid in tank A device for detecting leakage of liquid in a tank, in which, even if the liquid in the tank is a low viscosity liquid, degradation in flow rate measurement accuracy by an indirectly heated flow rate meter can be suppressed, so that a very fine amount of leakage can... | 01/19/2010 |
| 7581432 | Systems and methods for monitoring the integrity of a tank A conduit is connected to the interstice between an outer and inner wall of a storage tank or the liner thereof and may be used to monitor the integrity of the interstice. The conduit comprises a coupling in fluid communication with the interstice, a tube connected ... | 09/01/2009 |
| 7578169 | Method and apparatus for continuously monitoring interstitial regions in gasoline storage facilities and pipelines An underground storage system includes a primary containment unit and a secondary containment unit arranged to sealingly encompass the primary containment unit. The underground storage system further includes a leak detection system which is fluidly connected to the... | 08/25/2009 |
| 7574897 | Device for detecting leakage of liquid in tank A device for detecting leakage of liquid in a tank, capable of detecting the leakage at high accuracy and sensitivity for a wide range of a leakage quantity. A flow rate sensor section attached to a measurement fine tube (13b) includes temperature sens... | 08/18/2009 |
| 7536900 | Leak detector and leak detecting system using the same A leak detecting system includes a leak detector that detects leakage of liquid stored in a tank based on fluctuation in a level of the liquid. The leak detector includes a liquid inlet/outlet portion through which the liquid in the tank flows in and out, a flow-rat... | 05/26/2009 |
| 7500383 | Method and apparatus for monitoring the integrity of components and structures A method for monitoring the integrity of a permeable structure that is disposed in an environment containing a fluid at ambient pressure is provided. At least one cavity is formed in or on the permeable structure. A source of first fluid is provided at a first press... | 03/10/2009 |
| 7472581 | Vacuum apparatus A leak rate measuring method measures a leak rate of a vacuum apparatus including a vacuum chamber in which an object is accommodated to be processed, a first gas exhaust pump connected to the vacuum chamber via a first valve serving as a conductance variable valve,... | 01/06/2009 |
| 7448256 | System and method for determining the leakproofness of an object A system and a method for determining the leakproofness of an object having a first cavity. The system includes a closed chamber having a second cavity arranged to envelope the object, an evacuator for lowering the pressure inside one of the cavities, a supply for s... | 11/11/2008 |
| 7430896 | 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 t... | 10/07/2008 |
| 7430897 | Method and apparatus for detecting and locating gas leaks The invention provides an apparatus and method for detecting the location of a gas leak within a test region. The invention comprises an array of calibrated sensors for measuring a plurality of gas concentrations, a control system coupled to the sensor array for cal... | 10/07/2008 |
| 7409852 | System and method for testing fuel tank integrity The invention relates generally to a system and method for testing fuel evaporative systems, and more particularly to a stand-alone tank tester system (and method) for testing vehicle fuel tank integrity. Furthermore, a self-contained calibration tank with switchabl... | 08/12/2008 |
| 7392690 | Systems and methods for monitoring the integrity of a tank A conduit is connected to the interstice between an outer and inner wall of a storage tank or the liner thereof and may be used to monitor the integrity of the interstice. The conduit comprises a coupling in fluid communication with the interstice, a tube connected ... | 07/01/2008 |
| 7387012 | Leak detection sensor system and method for double carcass hose A fluid leak detection system mounts to a hose line segment of the type comprising at least an inner carcass and an outer containment carcass separated from the inner carcass by a collection space. The system includes a housing defined by sidewalls externally mounta... | 06/17/2008 |
| 7360545 | Dishwasher A dishwasher having an improved valve assembly is disclosed. The dishwasher includes a housing, a tub provided in the housing, an injector assembly for injecting water onto tableware positioned in the tub, and an inlet valve assembly. The inlet valve assembly includ... | 04/22/2008 |
| 7353692 | Leakage tester An inexpensive and compact leakage tester is provided, which performs a leakage determination on a measurement object automatically and with high accuracy. The leakage tester of the present invention includes; a pressurizing device for pressurizing the inside of a m... | 04/08/2008 |
| 7350512 | Method of validating a diagnostic purge valve leak detection test A system and method for evaluating the integrity of a leak detection test for a purge valve of a fuel system in a vehicle reduces or eliminates false failures. The method is executed on an engine control module (ECM) and is configured to determine when vehicle soak ... | 04/01/2008 |
| 7347191 | Vehicle fuel system A fuel system with a fuel tank having at least one opening into an interior of the fuel tank, and an electrically operated vent valve having an inlet communicated with the interior of the fuel tank and an outlet for venting fuel vapor from the fuel tank. The vent va... | 03/25/2008 |
| 7347098 | Apparatus for providing an output proportional to pressure divided by temperature (P/T) A circuit produces an output that is proportional to the molar density of gas in a chamber. The circuit employs an operational amplifier which measures the temperature using a RTD or other element that changes resistance with temperature. The RTD is placed such that... | 03/25/2008 |
| 7347082 | Method and apparatus for testing vehicle fuel system integrity A method and apparatus for measuring leakage of a vehicle fuel system includes providing an apparatus having a gas source, a pressure meter and a reference orifice and connecting the apparatus to the fuel system. The fuel system is pressurized with the source. A fir... | 03/25/2008 |
| 7347083 | System and method for detecting a leak in a hydraulic fluid system Methods, systems, and articles of manufacture consistent with the present invention provide for detecting a leak in a hydraulic fluid system having a reservoir and a conduit operatively connected to the reservoir. The fluid may reside in the reservoir, the conduit, ... | 03/25/2008 |
| 7343904 | Canister close valve device Disclosed herein is a canister close valve device for opening or closing a passage of a canister collecting evaporation gas evaporated in a fuel tank and a passage communicating with the atmosphere. The canister close valve device includes a housing which has a firs... | 03/18/2008 |
| 7340943 | Method of detecting connection of test port on an endoscope A method detects proper connection of a test connection to an endoscope port which leads to an interior space beneath a flexible sheath on an endoscope. Both the interior space and an air buffer are pressurized and then isolated from each other. Pressure in the inte... | 03/11/2008 |
| 7337652 | Fuel system with leak location diagnostic features and component for same A leak diagnostic strategy for an engine equipped with a high pressure common rail fuel system includes a plurality of separate leak lines. Each of the leak lines is constructed and positioned to capture fuel leaking from one of several different high pressure space... | 03/04/2008 |
| 7334455 | Leak detector of liquid in tank A leak detector comprising a sensor unit including a measuring slim-tube (13b) via the lower end of which a liquid in a tank is led in/out, a measuring tube (17) connected to the upper end thereof and having a sectional area larger than that the... | 02/26/2008 |
| 7334456 | Method and apparatus for continuously monitoring interstitial regions in gasoline storage facilities and pipelines An underground storage system includes a primary containment unit and a secondary containment unit arranged to sealingly encompass the primary containment unit. The underground storage system further includes a leak detection system which is fluidly connected to the... | 02/26/2008 |
| 7336160 | Device for reading out from sensors in the engine compartment of a motor-vehicle In a device for reading out from sensors in a motor vehicle, the sensors can be read out particularly easily if each sensor has a transponder, the motor-vehicle has a coil provided for the energy transmission and the motor-vehicle has at least one reading antenna fo... | 02/26/2008 |
| 7331217 | Re-usable main drain testing method and apparatus A removable, convenient main drain testing system is provided through the use of a testing device that includes a cap clampable about a drain pipe, an air pressure gauge, a valve and connection to an air compressor. The assembly can be moved from one jobsite to the ... | 02/19/2008 |
| 7329395 | Treatment apparatus and treatment method for organic waste A treatment apparatus for organic waste including a reaction vessel for introducing and decomposing organic waste and pulling out decomposed organic waste as a treated fluid. The reaction vessel includes an internal vessel made of corrosion-resistant material, an ex... | 02/12/2008 |