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| Number | Title | Issue Date |
| 7954194 | Pig extracting device A portable device for extracting a pig from a pipeline which uses a lifting means to raise or lower the device and wheels or other suitable means to allow for the device to be easily and quickly moved into position with minimal man power improving the efficiency and... | 06/07/2011 |
| 7644463 | Spear method for retrievable pig The method of retrieving a pig which is stuck in a pipeline including the steps of piercing the pig, establishing a circulation from the near end to the far end of the pig, gripping the central portion of the pig, and pulling the pig back to the proximate end of the... | 01/12/2010 |
| 7536742 | Method and apparatus for pushing a dual diameter pig into a pipeline An apparatus for pushing a dual diameter pig through a conical reducer attached to a pig trap and into a pipeline includes a frame configured such that the pig rests and moves forward on the frame, which has a front end adapted for attachment to the trap. The vertic... | 05/26/2009 |
| 7368139 | Aseptic processing system for fruit filling An apparatus for aseptic processing of a viscous food product includes a product tank configured to hold the viscous food product. A first pump is configured to pump the viscous food product from the product tank through a heat exchanger at a given rate. A cleaning ... | 05/06/2008 |
| 7311114 | Cross-line plugging system A method of providing access to the interior of a cross-line that intersects with a primary pipeline of equal or greater diameter, including the steps of attaching a branch fitting to the exterior of the primary pipeline on the side thereof opposite the point of int... | 12/25/2007 |
| 7279052 | Method for hydrate plug removal A method for removal of deposits such as hydrate plugs from a pipeline is provided including inserting a thruster pig connected to a return flow line into the pipeline The pig is then advanced forward into the pipeline by pumping a thrusting fluid into an annulus be... | 10/09/2007 |
| 7243685 | High pressure closure A closure includes a hub having a bore in fluid communication with the port of a vessel. A door is removably positioned within the bore of the hub, and a locking ring is threaded with the hub thread for moving the door to a closed and circumferentially sealed positi... | 07/17/2007 |
| 7231812 | Conduit breach location detector A conduit breach location detector for detecting leaks in a conduit is disclosed. The conduit breach location detector includes a shuttle cage for connection to the conduit. A sounding shuttle is provided in the shuttle cage. A sounding cable may be connected to the... | 06/19/2007 |
| 7051760 | Three-way inline piggable branch valve A multi-port valve device to divert flow of a fluid from a piggable transfer pipe line into a branch pipeline, and simultaneously prevent a line clearing device (known as a pig or cleaning sphere) from flowing with that fluid into the branch pipeline. This device ca... | 05/30/2006 |
| 7003838 | Hydraulic pig advance system comprising a control volume chamber containing hydraulic fluid and a force transmitting member This invention relates to a hydraulic pig advance system comprising a control volume chamber containing hydraulic fluid and a force transmitting member. The system further comprises two directional control valves which can be selectively repositioned to cause hydrau... | 02/28/2006 |
| 6960018 | Method for removing build-up on measurement gauges The present invention is directed to a device and method for removing build-up on such measurement gauges. The inventive device and method involve a movable scraper that fits around a cylindrical shield of a measurement gauge and continuously removes the build-up on... | 11/01/2005 |
| 6925671 | Pig launcher The ability to pig a pipeline is considered necessary and vital to most pipeline operations. The present invention provides a pig inserting apparatus and method designed to satisfy the need to Insert pigs for large diameter gasoline pipelines that are made of concre... | 08/09/2005 |
| 6913071 | Ball trap with safety-release gate The ball trap of the present invention is configured for connection in a pipeline such that the main flow path of the fluid in the pipeline passes through the ball trap. The ball trap includes a sieve conduit with a safety-release sieve gate. The sieve gate is displ... | 07/05/2005 |
| 6889400 | Cleaning member for medical tubes, porous member for cleaning treatment appliance insertion lumen of endoscope, and cleaning apparatus for cleaning treatment appliance insertion lumen of endoscope The cleaning member for a medical tube is shaped like a spherical body having a porous fibrous structure formed of a large number of superfine fibers aggregated and intertwined three-dimensionally. The spherical body moves along a lumen surface of the medical tube t... | 05/10/2005 |
| 6841007 | Method for pipeline filtration A method for cleaning a pipline by providing a filter or a number of filters adapted to reside in the pig launcher of the pipeline. The filters can be used to remove debris and impurities from the fluid flowing in the pipeline during a pigging operation. Alternative... | 01/11/2005 |
| 6769152 | Launcher for passing a pig into a pipeline An improved pipeline pig launcher method and use thereof for conveying a pig into a pipeline including an upright launch barrel having a lower end in communication with the pipeline, a valve affixed to an upper end of the launch barrel and having a full diameter pas... | 08/03/2004 |
| 6725875 | Valve A directional-control valve is connectable to a first main pipe and to a secondary pipe. The valve includes an upstream port and a downstream port connectable to the first main pipe and having identical diameters. A third connection port is connectable to the second... | 04/27/2004 |
| 6701657 | Universal firearm cleaning system A universal firearm cleaning system 4 is presented that includes a universal barrel fastener 6 and waste container 8 to catch cleaning patches and the splattering solvent that exits the barrel bore during the firearm cleaning process. The fastener 6 attac... | 03/09/2004 |
| 6631531 | Quick load air gun A quick load air gun for cleaning conduits by propelling a foam projectile through the conduit by means of a compressed air charge. The air gun includes a quick load port for inserting projectiles into the gun chamber, and a compressed air circuit includi... | 10/14/2003 |
| 6596089 | Subsea pig launcher piston pig A piston pig for pushing pigs from a larger diameter conduit into a smaller diameter conduit, where one embodiment includes a cylindrical body with a first sealing disc attached to the body and adapted to seal against the larger diameter conduit and maint... | 07/22/2003 |
| 6561488 | Pipeline cable deployment apparatus and method A fiber optic communication cable is deployed in a pipeline from a static coil drawn from a rearwardly facing exit of a cassette carried by a pipeline pig as the pig is driven along the pipeline from a launcher having a drive fluid inlet and a cable ancho... | 05/13/2003 |
| 6536461 | Subsea pig launching apparatus A subsea pig launching apparatus for launching one or more pigs into a flowline which is fluidly connectable to a source of well fluid comprises at least one first hub to which the source of well fluid is connectable and which is in communication with the... | 03/25/2003 |
| 6533032 | Subsea pig launcher and method of using the same A device and method are provided for storing pipeline pigs and launching the pigs into a subsea production pipeline. The device is installed in line with a pipeline and includes a frame, a magazine containing several rotatable trays for storing and sequen... | 03/18/2003 |
| 6527869 | Method for cleaning deposits from the interior of pipes In a first embodiment the invention comprises a method for cleaning deposits from the interior of a pipe in which a pig is propelled through the pipe by pressure from a fluid mixture of at least one liquid and at least one gas applied to the pig from the ... | 03/04/2003 |
| 6485577 | Pipe pig formed of frozen product A method and apparatus for pipe pig that is employed in a piping system for the purpose of recovering product. The pipe pig, or simply "pig," is utilized to flush or purge a piping system, which includes a pipe that is normally filled with a product strea... | 11/26/2002 |
| 6475294 | Subsea pig reloader A system for supplying pigs to a subsea pig launcher using a system carried and controlled by a remotely operated vehicle. The pigs are carried in racks that hold multiple pigs. The racks are extended and the pigs are allowed to drop into the barrel of th... | 11/05/2002 |
| 6412135 | Exchanger of wall clearing shuttles A shuttle exchanger 22 exchanges a shuttle 19 circulating in a reentrant lumen 13 by actuating a channel selector 27 to alter the path of the shuttle to be exchanged. Following the altered path the to-be-exchanged shuttle impinges on a shuttle 42 stored i... | 07/02/2002 |
| 6336238 | Multiple pig subsea pig launcher The pig launcher is installed subsea by coupling it to a launcher manifold. The launcher manifold is installed substantially permanently subsea as a part of a pipeline. The pig launcher includes a dual bore collet connector for coupling to the launcher ma... | 01/08/2002 |
| 6290432 | Diverless subsea hot tap system A diverless process of tapping a pressurized subsea pipeline without removing the pipeline from service. The process includes the steps of lowering and landing a measurement tool onto the pipeline in order to check ovality and straightness of the pipeline... | 09/18/2001 |
| 6286540 | Pig or sphere thrower A pipe system introduces an element launcher, which may be a pig, a foam-pig, an inflatable sphere, or a foam sphere, by mechanically displacing the element into the piping system.... | 09/11/2001 |
| 6206094 | Launching tool for objects downhole The invention comprises a tool for launching objects downhole, such as one or more plugs in a desired sequence. The movements leading to the release of the individual plugs are regulated by virtue of displacement of oil through at least one orifice. The w... | 03/27/2001 |
| 6082378 | Method and apparatus for internal cleaning of pipes or tubes The invention relates to a method for internal cleaning of pipes or tubes by inserting and propelling a projectile into and through respectively said pipe or tube by means of pressurized fluid, whereby the projectiles are fed one by one, in a direction ge... | 07/04/2000 |
| 6079074 | Pipe pig injector A pig injector has a magazine having a plug at one end and connected to a pig injector valve at the other end. The pig injector valve has a rotatable pig receiving chamber with a length L. Plural pigs of length L between rounded ends are positioned end to... | 06/27/2000 |
| 6029302 | Cleanable scraper station The invention concerns a cleanable scraper station which is designed as a dispatch/receive station (1;1*) and through which the product or cleaning agent flows. The aim of the invention is to improve the cleanability of the scraper station compared with p... | 02/29/2000 |
| 6022421 | Method for remotely launching subsea pigs in response to wellhead pressure change A method for sensing and launching pipeline pigs into a pipeline. The method includes pressurizing a pressure accumulator in a pig launching system that includes a pig chamber, a plurality of pigs, a launch tube, and the pressure accumulator. The method f... | 02/08/2000 |
| 5926892 | Heat exchanger washing apparatus and heat exchanger washing method A heat exchanger washing apparatus comprises a hopper for accommodating a plurality of washing brushes, a first heat exchanger leading guide having a first guide passage for guiding the washing brushes, a first opening/closing member for opening and closi... | 07/27/1999 |
| 5913637 | Automatic pipeline pig launching system A remotely actuable launching system for inserting pigs into a pipeline includes a barrel that can accommodate a series of pigs end-to-end. The pigs are urged towards the forward end of the barrel where they are controlled by a pair of axially spaced actu... | 06/22/1999 |
| 5891260 | Product recovery system A product recovery system for recovering product from a pipeline having a supply end and a destination end and having a path of primary product flow from the supply end to the destination end. The product recovery system includes a pig launching station c... | 04/06/1999 |
| 5884656 | Pig launcher A pig launcher (10, 38) comprises a cassette (12, 41) adapted to receive at least one pig (14, 16, 18, 20) and a latch mechanism (28a, 28b, 28c, 28d, 42a, 42b, 42c) comprising a latch member (30, 46). The latch member is movable from a first protruded pos... | 03/23/1999 |
| 5881761 | Hydraulic valve and liquid-dispensing installation equipped with such valves Valve (1) for establishing communication between two pipes, these being an upper pipe (8) and a lower pipe (7), and in which each pipe, (7, 8) can accommodate at least one scraper (32), the valve (1) comprising a stationary body (2) with passages (3, 4; 5... | 03/16/1999 |
