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| Number | Title | Issue Date |
| 8025080 | Orifice plate alignment device A tool for supporting and centering a flat circular orifice plate flow meter between two pipe flanges that have circumferentially spaced apart circular flange bolt holes that lie on a bolt circle and receive circular flange bolts for interconnecting the flanges, com... | 09/27/2011 |
| 7866347 | Isolation tool An isolation tool for use in a pipe comprises a seal unit, the seal unit being mounted to a launching assembly. The seal unit is adapted for location in a section of pipe, the seal unit adapted to be inserted into the pipe via a single opening in the pipe wall. The ... | 01/11/2011 |
| 7849882 | Double plug head for plugging pipe A double plug head for plugging a pipe. The double plug head includes a primary rubber packing, a roller support, a tube support and a rubber tube. The primary rubber packing is provided on a mounting plate of a plugging machine. The roller support is provided with ... | 12/14/2010 |
| 7353839 | High temperature completion plug For use in closing a cylindrical passageway through a working member in which the passageway is defined in part by a reduced diameter internal circumferential sealing surface and an internal locking groove, a completion plug having a plug body with a cylindrical ext... | 04/08/2008 |
| 7325442 | Leak testing device with a permanent coupling A leak testing device to be positioned adjacent one or more conduits comprises a generally cylindrical body defining a recess therein and including first and second end portions for cooperating with an end portion of a conduit. The body includes an opening between t... | 02/05/2008 |
| 7325573 | Plumbing line test plug and method of use of the same A plumbing line test plug includes a plug body adapted to plug an interior diameter of a plumbing line. The body has a wet face, which is exposed to liquid when in use, and a dry face, which is opposed to the wet face. A flexible pressure responsive annular membrane... | 02/05/2008 |
| 7311120 | Expandable pipe stopper An expandable pipe stopper for inserting within a pipe having two rigid circular plates adapted to be inserted wholly within a pipe and an outwardly-expandable flexible seal located between peripheral surfaces of the plates so as to be capable of expanding radially.... | 12/25/2007 |
| 7308902 | Subsea valve assembly with replaceable fixed orifice insert The present invention is directed to an subsea valve assembly having a fixed orifice insert that can be removed and replaced using a remotely operated vehicle (ROV). The valve assembly includes a removable orifice insert holder and a threaded receptacle housing into... | 12/18/2007 |
| 7281543 | Apparatus, systems and methods for plugging a high temperature pipe A method of plugging a pipeline includes the steps of welding onto the exterior of the pipeline (10) first (12) and second (14) spaced apart collars, each having a sealing face (26,26A) in a plane perpendicular the pipeline (10) ax... | 10/16/2007 |
| 7270139 | Cam-assisted, wedge actuated, metal-to-metal seal, block and bleed plugging tool A system and method of plugging a pipe including sealably securing onto the exterior of a pipe first and second spaced apart collars, each collar having a sealing face in a plane perpendicular the pipe axis, cutting and removing a length of pipe from between the col... | 09/18/2007 |
| 7225827 | Insertion valve and installation method A valve assembly for insertion in a pipe containing fluid under pressure includes a valve body adapted to be assembled over the pipe and a valve-stopping mechanism that mounts on the valve body. The hollow valve body interior and an access opening in the valve body ... | 06/05/2007 |
| 7171987 | Pipe fitting plug A reusable pipe fitting plug for temporarily sealing the open hub on a non-threaded female pipe fitting. The pipe fitting plug has a retainer with piercing edges, expandable pins or grit type particles designed to engage the inner portion of a pipe fitting hub in or... | 02/06/2007 |
| 7112358 | Self-adhesive purge dam for retaining purge gas around a weld zone A self-adhesive purge dam for retaining purge gas around a weld zone includes a base configured to substantially obstruct an air passage leading to the weld zone and an adhesive skirt extending from the base and configured to engage portions of the air passage. An a... | 09/26/2006 |
| 7089964 | Water pipe coupling with off-centered piercing assembly for tear out disk and method of removing disk A coupling used during testing of a water line including an upstream pipe and a downstream pipe connected by the coupling. A removable barrier disk prevents water from flowing through the connected pipes until after testing, when the disk is then detached from the b... | 08/15/2006 |
| 7021337 | Plumbing test plug and method An improved screw in test plug covering the opening of a test plug opening adapted to removably secure inflatable test balls thereto for inflation therein for water column pressure testing, and deflation for release of the water before removal of the test plug and t... | 04/04/2006 |
| 6997041 | 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... | 02/14/2006 |
| 6981821 | Subsea pipeline insertion shoe An insertion shoe for retrofitting an undersea pipeline to permit passage therethrough of a scraper includes a plate sized to cover an opening in a branch connection of the pipeline and an inner surface structured to match the inner surface surrounding the opening. ... | 01/03/2006 |
| 6978765 | Fuel system with press fit plug assembly A press fit plug assembly used to seal a fuel rail in which a pressure pulsation damper is inserted. The fuel rail includes an elongated member, a first member, and a second member. The elongated member extends along a longitudinal axis, the first member being posit... | 12/27/2005 |
| 6975243 | Downhole tubular with openings for signal passage Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular s... | 12/13/2005 |
| 6915819 | Tear out coupling A unitary removable barrier for installation in a cylindrical water line to selectively block the water line to passage of water therethrough. The unitary removable barrier is composed of a single piece body having at least one cylindrical section sized to receive u... | 07/12/2005 |
| 6901966 | Seal device for tubular member A seal device is constituted of a plurality of seal tubes. After a connected-tube body having base members disposed at a fore end and a rear end is inserted into a fluid passage such as a tubular member, the seal tubes are expanded by injecting gaseous nitrogen into... | 06/07/2005 |
| 6899138 | Flexible emergency gas pipeline plug An apparatus for stopping a high pressurized fluid from escaping a rupture in a pipeline including a support member having a first end, a second end, and an outer surface, an inner inflatable bladder, an outer material layer, and an inflation hose. The inner inflata... | 05/31/2005 |
| 6892752 | Pipeline isolating device A pipeline isolating device for istallation into and occlusion of a pressurised liquid or fluid supply pipe comprising a substantially solid and deformable boot (1) wich is adapted to move between an expanded and an unexpanded state and a shaped plunger (2... | 05/17/2005 |
| 6871666 | Bi-directional dual chamber orifice fitting Methods and apparatus for a bi-directional dual chamber orifice fitting comprising a body with a chamber in fluid communication with a flow bore. The fitting also comprises an orifice supported by an orifice plate carrier that is selectably disposable in the bore. I... | 03/29/2005 |
| 6864801 | Reservoir monitoring through windowed casing joint An apparatus and a method for controlling oilfield production to improve efficiency includes a remote sensing unit that is placed within a subsurface formation, an antenna structure for communicating with the remote sensing unit, a casing joint having nonconductive ... | 03/08/2005 |
| 6840090 | Plumbing testing devices A plumbing testing device (10) has a pair of aligned and closed pipe sections (12 and 14) with open sides facing in opposite directions. The plumbing testing device (10) is longitudinally collapsible to facilitate removal from between pip... | 01/11/2005 |
| 6840282 | Mechanisms to set a hollow device into and to retrieve said hollow device from a flow pipe A method to set a hollow device into an undersea flow pipe uses a flexible pig driven by a flow flowing into said flow pipe to displace a hollow device to a point where a stop means halts a displacement of said hollow device, thereby setting said hollow device into ... | 01/11/2005 |
| 6832624 | Plumbing tool and method for repairing a pipe therewith A plumbing tool includes an elongated hollow shaft and a resilient member attached to the shaft adjacent a shaft end. The resilient member extends radially outward and is sized to closely fit within a pipe inner diameter. Once the pipe has been cut, the tool is forc... | 12/21/2004 |
| 6810903 | Conduit flow controller The invention is an improved conduit flow controller for selectively controlling the flow of fluid through an elongated conduit. The conduit has an aperture defined by a continuous peripheral edge in the sidewall of the conduit. An elongated housing surrounds the ap... | 11/02/2004 |
| 6776184 | Insertion valve and installation method A valve assembly for insertion in a line formed by an existing pipe of predetermined outside diameter containing fluid under pressure includes a valve body with a bonnet-supporting flange that defines an access way into the valve body through which an installer can ... | 08/17/2004 |
| 6761187 | Tubular assembly having an internal plug A tubular assembly which includes a first (or outer) tube (12), a second (or inner) tube (21) and a plug (42) within the second tube (21) is described. The plug (42) resides within at least a portion of the second tube (21),... | 07/13/2004 |
| 6755216 | Method of repairing an un-isolatable leak in a piping system and apparatus and components for accomplishing the same A method of repairing a leak at a branch pipe location in a manner that it is not necessary to drain the water or the liquid from the main pipe at which the repair is being made. The end of the existing branch pipe is removed from a connector at the main pipe, and a... | 06/29/2004 |
| 6745791 | Service tools for pipelines containing conduit or cable Pipeline stopping tools for use in temporarily stopping flow in a pipeline have features for centering a conduit or cable within the pipeline. The conduit or cable is guided into a recess, to avoid damage as the pipeline is squeezed closed. Alternative pipeline stop... | 06/08/2004 |
| 6705350 | Plug and plugging machine for pipeline fitting A plug for a pipeline fitting is provided and includes a cylindrical body having an annular sealing groove, an O-ring fitted in the annular sealing groove, an expanding plate having an outer edge inserted into an annular locking groove of the pipeline fitting, and a... | 03/16/2004 |
| 6672139 | Leak testing device and a coupling therefor A leak testing device includes a generally cylindrical sealing gasket which defines a recess therein. The gasket includes first and second end portions for receiving the respective ends of two adjacent conduits. A shoulder portion extends from the gasket.... | 01/06/2004 |
| 6659133 | Insertable line stopper plug for pipelines This invention contemplates a resettable plug assembly suitable for insertion into a pipeline from a transverse tee connection in order that flow may be stopped and pressure retained by the plug. The stopper plug is inserted in the upstream direction and ... | 12/09/2003 |
| 6655413 | Method and apparatus for pressure testing pipe lines 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 longitudina... | 12/02/2003 |
| 6622747 | Cutting, valve insertion and corrosion-resistant works without fluid supply interruption A fluid supply interruption free cutting apparatus of the present invention comprises a seal-up housing and a drill. The drill has a milling cutting tool turned by a motor. The seal-up housing is of a structure suited to turn in the circumferential direct... | 09/23/2003 |
| 6588455 | Method and apparatus for blocking pipes Apparatus for blocking the bore of a pipe (1) comprises a plurality of elongate shutter member (15-17) pivotably mounted to an elongate support member (3/3a) for insertion through a pre-drilled aperture (8) in the pipe wall. Actuating means (14) are provi... | 07/08/2003 |
| 6581620 | Method and apparatus for repairing or replacing valves A method and apparatus for repairing a valve, the valve being attached to a tank, the method including steps of providing a valve tool having a rigid tube and having an elastic air bladder, such bladder having a port, the port being connected to the tube,... | 06/24/2003 |
