| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073046000 | Between fitted parts (e.g., joints) | 12 |
| 20090095055 | Method for Differentially Pumping Endblock Seal Cavity - A system for providing a seal between a rotating part and a stationary part that comprises two seals in series separated by a cavity is disclosed. The cavity may be at low pressure and failure of either seal may be detected by a change in cavity pressure. An alarm may be triggered when cavity pressure rises above a threshold, or when it remains above a threshold for more than a predetermined period of time. In a system comprising multiple cavities, a cavity may be selectively isolated to determine if a seal associated with that cavity is experiencing a leak. | 04-16-2009 |
| 20110138886 | Refrigerated Transport System Testing - A method involves inspecting/testing a refrigeration system. One or more conduits or other components cooperate with the compressor, heat rejection heat exchanger, expansion device, and heat absorption heat exchanger to define a refrigerant flowpath. The inspecting/testing method comprises placing a plurality of collars over respective joints along the refrigerant flowpath. The collars each define a space that may be exposed to one or more sensors. Based upon input from the sensors, the presence or absence of leaks at the joints is determined. | 06-16-2011 |
| 20100005862 | SENSOR FOR DETECTING SURFACE CRACKS IN A COMPONENT OR STRUCTURE - A sensor for detecting surface cracks in a component or structure. A preferred embodiment of the device comprises a flat body portion with a central hole through which a main structural bolt passes. The body portion has a throughway providing fluid communication between an exterior port and a substantially hermetically-sealed area on the structural surface being monitored. A crack which develops in the monitored area surrounding the bolt hole will cause venting of the hermetically-sealed area, in turn causing a change in fluid pressure that can be detected and/or measured to warn of the presence of the crack. | 01-14-2010 |
| 20080307859 | METHOD AND SYSTEM FOR CONTROLLING QUALITY AND TRACKING PARTS FOR REPAIR AND REPLACEMENT OF A PIPING SYSTEM - The invention comprises a method for controlling quality in a piping system, including a valve and a piping structure coupled to the valve. The method comprises the following: pressurize the piping structure with a gas at greater than sea-level pressure; seal the gas in the piping structure with the valve; determine whether the gas stays within the piping structure; determine that gas leaks from the piping structure; and identify the location of a leak from the piping structure. The invention further comprises a method for identifying a component. The method comprises the following: indicate identification information on a tag regarding the piping structure; and attach the tag to the piping structure. | 12-18-2008 |
| 20100064778 | TESTING APPARATUS AND METHOD FOR VALVES - The present invention discloses a testing apparatus and a method for testing valves used in municipal water distribution pipeline networks, particularly air-release/vacuum-breaker combination valves. The testing apparatus comprises a cylindrical reservoir to which the valve to be tested is connected. Testing is performed with water at the desired pressure, with compressed air, with vacuum and/or with a combination thereof. A determination as to a test valve's operational state is made based on the presence or absence of gas and liquid discharges and/or suction noises from the outlet, inlet, seals and joints of the valve. | 03-18-2010 |
| 20090120166 | METHOD AND APPARATUS FOR CONTINUOUS FLUID LEAK MONITORING AND DETECTION IN ANALYTICAL INSTRUMENTS AND INSTRUMENT SYSTEMS - A method and device are disclosed that provide for detection of fluid leaks in analytical instruments and instrument systems. The leak detection device includes a collection tube, a fluid absorbing material, and a circuit that electrically couples to an indicator device. When assembled, the leak detection device detects and monitors for fluid leaks, providing a preselected response in conjunction with the indicator device when contacted by a fluid. | 05-14-2009 |
| 20120000273 | FIXTURE FOR EVALUATING A METAL-TO-METAL SEAL BETWEEN TUBULAR COMPONENTS AND METHOD OF USE OF SAME - A fixture for evaluating a metal-to-metal seal. A first metal seal surface and a second metal seal surface are brought into initial contact by engagement of a male connection of a first tubular component and a female connection of a second tubular component to form a metal-to-metal seal. A contact pressure regulator is provided to alter the contact load acting in the interfacial region between the first metal seal surface and the second metal seal surface in a predictable manner An inlet passage is provided to communicate test fluid to an inlet side of the metal-to-metal seal. An outlet passage is provided on an outlet side of the metal-to-metal seal. In accordance with the method, a capacity of the metal-to-metal seal is expressed as the pressure differential required to just induce leakage given a measure of absolute contact load greater than zero. | 01-05-2012 |
| 20110154886 | Flange Fitting with Leak Sensor Port - A leak detection feature for a fluid conduit. The leak detection feature facilitates the monitoring of fluid leaks at the interface of two adjoining conduit flange fittings. An embodiment of a flange fitting with a leak detection feature for a fluid conduit having an opening. The flange fitting includes a flange body around the opening of the fluid conduit, a leak detection passageway formed in the flange body, and a leak detection port formed in the flange body. The flange body has a sealing face surface configured to mate with a cooperating flange fitting, and the leak detection passageway terminates at the sealing face surface. The leak detection port is in fluid communication with the leak detection passageway, and the leak detection port is configured for fluid communication with a leak sensing apparatus. | 06-30-2011 |
| 20120111094 | TUBE WELD STEAM TEST DEVICE AND METHOD - A tube weld seam test method and device for testing a tube weld seam ( | 05-10-2012 |
| 20110185793 | Seal assembly with leak monitoring - A seal assembly is provided for a joint between a first pipe segment having a first flange and a second pipe segment having a second flange. The seal assembly has at least one primary sealing member mounted on the first flange and forming a loop around the first pipe segment and at least one supplemental sealing member mounted on the first flange between the first pipe segment and the at least one primary sealing member, the at least one supplemental sealing member forming a loop around the first pipe segment. The seal assembly also has a first sealed containment area that is formed between the at least one primary and at least one supplemental sealing members when the at least one primary and at least one supplemental sealing members are compressed and a plurality of conduits formed in the first flange and extending from a first face of the first flange oriented away from the second flange to a second face of the first flange oriented toward the second flange. The plurality of conduits includes a first supply conduit located between the at least one primary sealing member and the at least one supplemental sealing member and a return conduit located so that the at least one primary sealing member is positioned between the supply conduit and the return conduit. | 08-04-2011 |
| 20100011840 | External Pipe Testing Tool and Testing Method Using Same - An apparatus for testing the integrity of pipe welds includes a sleeve for circumferentially surrounding the pipe, the sleeve having an inner diameter greater than the outer diameter of the pipe. The sleeve having end walls extending radially inwards towards the pipe wall. The apparatus including at least two seals to form a sealed annular space between the pipe, the sleeve and the sleeve end walls. A filling and pressurizing means pressurizes the annular space. The test procedure comprises monitoring of the pressure within the space. | 01-21-2010 |
| 073047000 | Piston, piston ring, or engine valve | 1 |
| 20130014563 | EVAPORATED FUEL LEAK DETECTING APPARATUSAANM Itoh; TomohiroAACI Nagoya-cityAACO JPAAGP Itoh; Tomohiro Nagoya-city JPAANM Kobayashi; MitsuyukiAACI Gamagori-cityAACO JPAAGP Kobayashi; Mitsuyuki Gamagori-city JPAANM Sugihara; ShinjiAACI Mizuho-cityAACO JPAAGP Sugihara; Shinji Mizuho-city JP - A first determiner determines whether a pressure in a fuel tank is within a predetermined range when an ignition switch of an engine is on. A second determiner determines whether a valve allows or prohibits a communication between the fuel tank and a switch valve, when the first determiner determines that the pressure in the fuel tank is within the predetermined range. A control unit controls a pressure controlling portion based on a determination result of the first determiner and a determination result of the second determiner. A leak determiner determines whether the fuel tank has a leak of evaporated fuel based on a signal output from a first detector detecting a pressure in a detection passage and a signal output from a second detector detecting a pressure in the fuel tank. | 01-17-2013 |
