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| Number | Title | Issue Date |
| 6681615 | Portable digital oxygen leak detector An oxygen leakage regulator tester to test for air leaks in O2 supply equipment, such as oxygen masks and hoses used by flight personnel. The tester uses electromechanical sensors and a central processing unit, coupled to digital displays for a... | 01/27/2004 |
| 6679101 | Device for detecting leakage in membranes A device for detecting leaks in membranes, etc., for liquid media, whereby the membrane is provided, over at least one partial area of its surface extension, with at least one electrical conductor that produces a change in a measurement signal of the elec... | 01/20/2004 |
| 6668620 | Test for hydraulic leakage A test for hydraulic leakage in hydraulic components uses a rate testing device having two circuits including a filling circuit that fast-fills the component with hydraulic fluid and a leakage circuit that measures the leakage rate of fluid flow through t... | 12/30/2003 |
| 6666970 | Process and apparatus for testing filtration unit integrity A method and apparatus for conducting water intrusion tests on hydrophobic filtration units is disclosed.... | 12/23/2003 |
| 6666070 | Method for testing the integrity of DPFs A method for inspecting the integrity of diesel exhaust filter by introducing air under pressure through one end of the structure and detecting the presence of air flow at an opposing end surface. The diesel exhaust filter is tested green.... | 12/23/2003 |
| 6662632 | Lined tank equipped with leak detection and monitoring system Accordingly, a tank, preferably on a wheeled vehicle such as a railcar or trailer, is provided with a protective liner. Two electrodes are preferably permanently mounted within the tank and respectively connected to a monitor. Another two ground connectio... | 12/16/2003 |
| 6658920 | Leak detector pump A leak detector pump, including a housing having a gas outlet and a plurality of gas inlet unions, components of a high vacuum pump located in the housing, a gas analyzer associated with the housing, a union for introducing test fluid into the housing, a ... | 12/09/2003 |
| 6651486 | Standup pressure testing device and method A pressure testing device comprising a connector adapted to engage a gas line containing a gas supply under pressure is provided. The pressure testing device includes a measuring device and a compressible pump. The measuring device operably communicates w... | 11/25/2003 |
| 6647761 | Hand held flexible mount leak detector A hand held refrigeration fluid leak detector for observing and detecting optical fluorescence resulting from optical excitation of the leaking refrigeration fluid provides single hand operation for a user while holding the main body of the detector with ... | 11/18/2003 |
| 6640615 | System for determining the integrity of a package or packaging material based on its transmission of a test gas A sealed package's transmission of oxygen, water vapor, carbon dioxide, or other gas or vapor that is of interest because of its potential adverse effects on the package contents is determined indirectly, based upon the package's transmission of a differe... | 11/04/2003 |
| 6640616 | Apparatus and method for detecting leaks in metal roofs An apparatus and method are shown for detecting leaks in metal roofs which are made up of metal roof panels secured in position to form a roof structure by metal screws. The apparatus includes an elongate tubular stand having a lower extent and an upper e... | 11/04/2003 |
| 6629450 | Semiconductor auto leak rate tester A method for automatically conducting a leak test for a vacuum system includes receiving a process status input representing the completion of a manufacturing cycle. On determining that the process status is in a complete state, the vacuum system isolatio... | 10/07/2003 |
| 6622545 | Leak detection system and method having self-compensation for changes in pressurizing pump efficiency A leak detection system for a fuel system of an automotive vehicle has a diaphragm pump that is repeatedly stroked to pressurize vapor containment space of the fuel system during a leak detection test. A restriction is disposed between the pump and the sp... | 09/23/2003 |
| 6595040 | Test leak unit A test leak unit (1) includes a supply of test gas, preferably helium, and an element (14) for determining leakage rates. The aim of the invention is to create a simple, robust and easily refilled test leak unit, especially for detecting packaging leaks. ... | 07/22/2003 |
| 6584828 | Method and apparatus of nondestructive testing a sealed product for leaks A method of testing a product for leaks includes applying to the product a reference pressure that is less than 50.6 KPa. The method also includes developing a gas flow through a leak detection sensor in response to applying the reference pressure to the ... | 07/01/2003 |
| 6578407 | System for leak testing industrial components A system for leak testing industrial components, such as engine blocks, is disclosed and includes a conveyor system for transporting the engine components to and from a test area having a support surface. A robot is operable in the test area and includes ... | 06/17/2003 |
| 6578408 | Testing fluid-containing systems A testing procedure is disclosed for testing a road tanker, and other transportable storage tanks, for fluid-tightness. A positive test pressure is first applied to one storage compartment of the road tanker, and simultaneously a negative pressure is appl... | 06/17/2003 |
| 6575016 | Method for leak testing and leak testing apparatus For leak testing closed containers (9) which are filled with a filling product containing at least one liquid component the container is introduced in a test cavity (1) which is evacuated at least down to vapour pressure of that liquid component. The pres... | 06/10/2003 |
| 6571607 | Fluid leak detection via thermal sensing Fluid leak detection through thermal sensing is disclosed. A sensor includes one or more flexible, thermally conductive, fluid isolating layers, and a thermally sensitive detector situated within the flexible, thermally conductive, fluid isolating layers.... | 06/03/2003 |
| 6564615 | Testing vapor recovery systems A method of leakage testing a volatile liquid tank farm together with a vapour recovery system, to collect vapour from the tanks at the time of re-filling them with volatile liquid. The tank farm has individual fill-pipes (13) for each tank (10) with each... | 05/20/2003 |
| 6564617 | Water cutoff tester for grommets An apparatus for testing a waterproof state of a sub insertion portion of a grommet provided in eccentric with a main insertion portion. The apparatus is provided with an enclosure for sealably enclosing an end portion of the sub insertion portion, an air... | 05/20/2003 |
| 6567006 | Monitoring vibrations in a pipeline network The invention relates to acoustic detection of leaks in a pipeline using locally-intelligent, data-adaptive monitors deployed for a period of time. Monitors are initialized by a base station. Following deployment, monitors receive vibration signals at pro... | 05/20/2003 |
| 6557402 | Porous metal flow master A flow master for testing a leak test head includes a housing having an upper body portion and a lower body portion, the housing defining a passageway therethrough, the housing further defining an internal volume substantially equal to a fuel volume of a ... | 05/06/2003 |
| 6539776 | Apparatus for condition monitoring of the integrity of fasteners and fastened joints Apparatus 10 for condition monitoring the integrity of a rivet 12 joint holding together sheets 14 and 16 of a structure 18 includes a substantially fluid impervious pad 20 for covering the heads of the rivets 12 and an adjacent surface 24 of the structur... | 04/01/2003 |
| 6536260 | Balloon catheter leak detection method and apparatus An intra-aortic balloon pump system having a leak detector comprising a processor, a pressure sensor, and optionally a temperature sensor. Gas leaks from the intra-aortic balloon pump system are detected by comparing shuttle gas pressure readings, taken j... | 03/25/2003 |
| 6532801 | Portable apparatus and method for tracing a gas leak A method and apparatus for identifying the location of a gas leak source. The apparatus includes a gas detector for detecting the presence of gas and a wind direction indicator. The method traces a gas leak source location using the apparatus including th... | 03/18/2003 |
| 6532814 | Apparatus and method for detecting a leak in a swimming pool An apparatus and method for detecting water loss from a swimming pool includes a first container having an upper end, a lower end, an inner cavity and at least one opening allowing swimming pool water to flow in and out of said inner cavity; a substantial... | 03/18/2003 |
| 6530259 | Fugitive emissions detection system and components thereof The present invention relates to detection and alarm systems for predicting and detecting the location of spills, leaks, emissions, and/or pollution sources, i.e., unwanted fluid (liquid/gas) flow/escape, at refineries, e.g., oil and gas refineries, and p... | 03/11/2003 |
| 6530261 | Semi-truck trailer brake test device, system and method A relatively simple and inexpensive apparatus for testing at least the air brakes of trailers includes a portable air-brake governing or actuation system and a hand-held control pendent, operating off an independent compressed air supply. Without the coup... | 03/11/2003 |
| 6522980 | Method and algorithm for predicting leak rates A method and algorithm for predicting the fluid loss rate of a system, uses data for the leak rate from the system for a substitute fluid that leaks at a different rate than the system fluid. In the illustrated embodiment, the system is a pneumatic tire a... | 02/18/2003 |
| 6520002 | Apparatus and method for testing a recuperator cell for an air leak A cell of a recuperator has a passage therein having a first end and a second end. In use a fluid passes through the passage under pressure. The cell must be tested to determine an operational efficiency or leakage within the passage. A pair of sealing me... | 02/18/2003 |
| 6494082 | Method of and apparatus for testing airtightness of closed space provided with steam movement control device A method and an apparatus confirms airtightness of a closed space in a housing provided with a steam movement control device. The apparatus includes an air feed passage and an air exhaust passage, which communicate with an interior of the housing. The air... | 12/17/2002 |
| 6489894 | Leak detection device for double-wall pipeline systems and container systems A leak detection device for double-wall pipeline or container systems has a leak detector with a vacuum pump, a pressure-dependent switch for the vacuum pump, and an alarm device. The leak detector monitors simultaneously several containers. A collecting ... | 12/03/2002 |
| 6484564 | Liquid leakage sensor, paper for detecting liquid leakage, and holder for detecting liquid leakage A liquid leakage sensor, paper for detecting liquid leakage, and holder for detecting liquid leakage stably and reliably without being affected by bubbles when a large volume of liquid leaks at once. A liquid leakage sensor also has a tilt detection capab... | 11/26/2002 |
| 6481265 | Method and apparatus for detecting leaks A leak detection method and apparatus is characterized by the production of analog signals representative of the fluid inlet flow and fluid outlet flow of a closed system. The signals are compared, and a difference signal is generated which is a function ... | 11/19/2002 |
| 6476723 | Insulating oil leak containment Insulating oil in electric power transmission devices such as a transformer is filtered for removal of accumulated water and carbon particles. The filter and circulation pump are usually located in a separate cabinet external to the transformer with circu... | 11/05/2002 |
| 6460404 | Apparatus and method for detecting bad edge bead removal in a spin-on-glass coater tool A solvent delivery system for an edge bead removal tool (EBR) that detects N2 leaks in a solvent pressure tank that surrounds a solvent bottle. A solvent bottle is surrounded by a pressure tank. The solvent bottle contains the solvent used in t... | 10/08/2002 |
| 6457259 | Portable apparatus for drying stator windings and related process A transportable skid for drying and testing generator stator windings includes a platform supporting a compressor adapted to supply compressed air to the stator winding; a dryer arranged to receive and dry compressed air from the compressor; a buffer tank... | 10/01/2002 |
| 6453728 | Method and apparatus for testing hollow pieces for impermeability The impermeability of a test piece, e.g., a pipe made of concrete, clay, stoneware, etc., is tested using a vacuum. Air in a compensation tank is maintained at a vacuum and also at a temperature that corresponds to the temperature of the inside wall of th... | 09/24/2002 |
| 6451201 | Distributed on-line integrity testing for immersed membranes In an apparatus for providing a continuous integrity test for suction driven filtering membrane assemblies 10, a monitoring line 32 diverts a portion of permeate to a monitoring device 30 (e.g. a turbidimeter). Both ends 34, 36 of the monitoring line are ... | 09/17/2002 |
