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| Number | Title | Issue Date |
| 8061184 | Method and system for monitoring gas leaks by amplification of flow A method to amplify the pressure effects of very small flows, or very small leaks, in contained fluid systems, and the effects of small leaks in fluid systems that have small flows such as would occur in a combustible gas system with lighted pilot lights or a contai... | 11/22/2011 |
| 8033161 | 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 anten... | 10/11/2011 |
| 8011226 | 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 se... | 09/06/2011 |
| 7987697 | Curing bladder leak detection system for a tire press A method of detecting a leak in a curing bladder during a tire curing process provides a curing bladder (40) and tire (42) in a tire mold structure (18). An inert tracer gas (48) is added to a pressurized gas such as nitrogen, with the ni... | 08/02/2011 |
| 7984639 | 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... | 07/26/2011 |
| 7975528 | 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 va... | 07/12/2011 |
| 7918126 | Intelligent underwater leak detection system A subsea leak detection system is disclosed which includes a plurality of subsea leak detection sensors and a leak detection controller adapted to receive leak detection data from the plurality of subsea leak detection sensors and direct the sensing activities of th... | 04/05/2011 |
| 7905131 | 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 th... | 03/15/2011 |
| 7849728 | 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 va... | 12/14/2010 |
| 7810377 | Method and device for testing the sealing tightness of tear-off lids In a linear transport device (30) for tear-off lids (20), the latter are tested for the impermeability of the seal and the foil in a test device (9) that is integrated into the linear transport device. The lid is fixed between a pressure chamber... | 10/12/2010 |
| 7770435 | Pipeline having a collector line and method for leakage monitoring and leakage location A collector line for leakage monitoring and leakage location at a plant includes a carrier tube having a wall with openings formed therein, which are sealed with silicone rubber. This makes it possible to use the collector line during low ambient temperatures. A dev... | 08/10/2010 |
| 7765853 | 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 f... | 08/03/2010 |
| 7677085 | Gas leak detection apparatus A gas leak detection apparatus includes a main body, a magnetically operated valve, a magnetically exciting device, a pressure sensing device, and a pressure detector. Thus, if the pressure detector detects that the gas leak happens to the pipe located at the rear s... | 03/16/2010 |
| 7669461 | System and method for utility metering and leak detection The system and method for detecting water and/or gas leaks by monitoring usage patterns is described. In one embodiment, the existence of a leak is detected by looking for usage patterns wherein water or gas is always being used, at least at a low rate. A leak is in... | 03/02/2010 |
| 7647817 | Loss detection system for open channel networks The invention discloses a loss detection system to determine and monitor containment losses for open channel networks (10). The system includes at least first and second flow regulators (26, 28) to allow flow of liquid into and out of at least one pool... | 01/19/2010 |
| 7614280 | Quantitative fit test system and method for assessing respirator biological fit factors A quantitative fit test (QNFT) system and method for assessing the biological fit factor (FF) performance of respiratory protective devices. The biological QNFT system includes the following three main elements: an aerosol generation system; an exposure chamber; and... | 11/10/2009 |
| 7546759 | Chemical/biological hose test adapter The invention relates to devices and methods for adapting a standard protective mask test apparatus to perform leak testing of a mask air hose assembly as an independent equipment component, i.e., independent of the mask-hose system. ... | 06/16/2009 |
| 7516648 | 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 inte... | 04/14/2009 |
| 7503205 | Redundant vacuum source for secondary containment monitoring and leak detection system and method A redundant vacuum-generating source system and method for generating and/or maintaining a vacuum level in a secondarily contained fuel-handling component that is monitored for leaks. The vacuum-generating source is coupled to upstream fuel-handling components to dr... | 03/17/2009 |
| 7487664 | System and method for sensing a wide range of water vapor levels in an atmosphere A dual sensor system for measuring the presence of a wide range of water vapor concentration in an atmosphere. A first sensor for measuring higher levels of water vapor concentration and a second sensor for measuring lower levels of water vapor concentration. A pair... | 02/10/2009 |
| 7454955 | Leak detection structure One embodiment of a leak detection structure includes a sensor having a leak detection surface and a wicking structure positioned adjacent the leak detection surface, the wicking structure adapted for wicking a fluid onto the leak detection surface. ... | 11/25/2008 |
| 7430895 | Apparatus and method for inspecting quality of molded foam parts Apparatus and method is provided for reliably testing a quality level of bead fusion in molded foam parts. Such apparatus may be portable and hand-held, and the test procedure will not destroy or damage tested products. In a useful embodiment comprising apparatus fo... | 10/07/2008 |
| 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 |
| 7429027 | Self-flushing needle valve A needle valve with a hollow needle effective for permitting a portion of the fluid passing through the valve to flow throughout the valve and exit through any leaks in the valve, whereby any environmental fluid within the valve is displaced by the fluid passing thr... | 09/30/2008 |
| 7412876 | System and method for utility metering and leak detection The system and method for detecting water and/or gas leaks by monitoring usage patterns is described. In one embodiment, the existence of a leak is detected by looking for usage patterns wherein water or gas is always being used, at least at a low rate. A leak is in... | 08/19/2008 |
| 7410528 | Method and system for testing the integrity of green plugged honeycomb structure A method for testing integrity of a plugged honeycomb structure includes forming a condenser at a first end of the honeycomb structure, passing a vaporous stream into a second end of the honeycomb structure, wherein a column of the vaporous stream emerges at the fir... | 08/12/2008 |
| 7398676 | Leak sensor and leak sensing system A leak sensor and a leak sensing system are provided. The leak sensor preferably includes a fluid sensing member that is capable of sensing and indicating the presence of a fluid leaked from a fluid storage or transport member. The leak sensor further preferably inc... | 07/15/2008 |
| 7398675 | Dual slide gate valve and method for using same A method and device for pressure testing a pipe line is provided wherein a fitting is inserted into the pipeline by inserting male ends of the pipeline into female ends of the fitting to define a flow path through the fitting extending along a longitudinal axis. The... | 07/15/2008 |
| 7383720 | Method and device for testing for leaks A method and a device for testing whether planar material, in particular films, are leakproof. The planar material is continuously conveyed in a continuous process through a test chamber which has a test gas chamber on one side of the planar material and a measuring... | 06/10/2008 |
| 7370520 | Method of testing a fuel injection valve for a diesel engine Method of testing a fuel injection valve 1 for a diesel engine by supplying pressurized oil to the inlet side of the valve. According to the invention the oil pressure is gradually recorded, the pressure increase being interrupted at the moment when the openi... | 05/13/2008 |
| 7367220 | Engine oil leak test method with EGR valve leak offset A method for pressure testing an engine to detect possible oil seal leaks. The engine is charged with a predetermined pressure while air pressure is also applied to an exhaust gas recirculation (EGR) valve intake port to offset leakage inherent in the EGR valve. The... | 05/06/2008 |
| 7367219 | Automatic control of leak test unit during testing and analysis of an engine A method and apparatus for developing a test for determining if an engine has oil seal leaks. The engine is charged with a predetermined pressure of air and monitored by a leak tester. A digital valve is set to provide a certain leak rate based upon signals received... | 05/06/2008 |
| 7360401 | Leak detector for evaporated fuel An evaporated fuel leak detector detects leakage of an evaporated fuel generated in a fuel tank. The detector includes: a differential pressure valve, a pump for sucking a detection port side to reduce pressure on a fuel tank side, and pressure detection means for d... | 04/22/2008 |
| 7360413 | Wireless water flow monitoring and leak detection system, and method A wireless water flow monitoring and leak detection system and method are provided. The system includes a base station, a memory, and a central processing unit configured to control the operation of the system and to analyze stored data. A plurality of highly-sensit... | 04/22/2008 |
| 7362230 | Leak detection apparatus Leak detection apparatuses located, at least in part, in the deadspace below a floor in an abode wherein the leak detection apparatus captures, detects and signals the presence of leaking water and other aqueous solutions. ... | 04/22/2008 |
| 7360408 | Method for determining a fuel pressure related fault and operating an internal combustion engine based on the fault The invention relates to a method for operating a combustion engine (1) comprising a fuel-driven heat engine (5), which permits a differentiation of faults during the supply of fuel. To this end, the fuel is supplied under pressure to the heat engine (... | 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 |
| 7350876 | Combination panline and utility drilling or bolting unit A drilling or bolting unit for selective use with either a vehicle or a panline of a face conveyor associated with a longwall miner or mining machine is disclosed. In one embodiment, the unit comprises a base adapted for engaging the panline and a plurality of recei... | 04/01/2008 |
| 7347087 | Engine oil leak test system and method A system and method for testing partially assembled engines for possible oil leaks. The system includes engine pressurizing devices that are automatically controlled by a controller according to a predetermined control program based upon the engine model type being ... | 03/25/2008 |
