Assignee: TDW Delaware, Inc.

Location: Not specified.
No. of applications: 22

Application No.	Application Title	Issue Date
20110139351	Method for Fast Cure of a Composite Wrap A system and method for fast curing a composite material includes the steps of wrapping an uncured composite material about an external surface of a tubular or non-tubular structural member so that at least one layer of the uncured composite material encircles a portion...	06/16/2011
20110138555	Bidirectional Bristle Pig with Sliding Collar A bidirectional bristle pig provides a means for collapsing or restraining the bristles so that the pig may be used in a reciprocating manner or, when the pig becomes stuck, the pig may be easily retrieved in a direction opposite that of the initial direction of travel....	06/16/2011
20100229958	BLOCK AND BLEED PLUGGING TOOL EMPLOYING SEALS ON A PIPELINE EXTERIOR The present invention is a method of plugging a pipeline having an exterior surface including the steps of affixing to the exterior of the pipeline first and second spaced apart collars, welding each collar to the pipeline so that an operating space is provided between ...	09/16/2010
20100180391	Pipeline Cleaning Pig with Self-Energizing Diagonally Oriented Scrapers The present invention is a pipeline pig for cleaning the interior of a pipeline, the pipeline pig having a longitudinal pig body with forward and rearward elastomeric propulsion members affixed to and supporting the pig body substantially concentrically in a pipeline, t...	07/22/2010
20100175771	TELESCOPING DOUBLE BLOCK AND BLEED PLUG A plugging device for double blocking a section of pipeline or piping and method for its use includes a first and second sealing element and at least one cylinder that is extendable along an axial direction of the pipe between a retracted first position and an extended ...	07/15/2010
20100170535	PIPELINE PIG LAUNCH PIN AND RETRACTION SYSTEM A method and system for launching a pipeline pig includes the steps of compressing a modulating bypass valve of a pipeline pig and installing a locking means to temporally maintain the bypass valve in the compressed state. Once the pig has travelled a predetermined dist...	07/08/2010
20100154988	Fusible Completion Plug A fusible completion plug and method for its use includes a cylindrical plug body having a lower portion that includes a fusible element in communication with an electric power supply. The completion plug also includes an elastomeric seal that provides for a temporary s...	06/24/2010
20100012215	Composite Load Transferring Technique A method for repairing and reinforcing a pipeline includes covering a defect in a pipeline section with a composite wrap, isolating the wrap from the ambient environment, and applying a compressive force on the wrap so that the pressure on the wrap is substantially equa...	01/21/2010
20100000037	Speed Regulated Pipeline Pig A pipeline pig includes a venturi and a modulating valve located rearward of the inlet side of the venturi. When the valve is in the open position, a predetermined maximum bypass flow is allowed through the venturi. The closed position allows a predetermined minimum byp...	01/07/2010
20090301568	Verifiable Closing and Locking System of a Cylindrical Passageway A method according to this invention employs a set of valves, a series of pressure checks, and a physical stop for verifying the closing of a locking system of a cylindrical passageway. The method may also employ an equalization piping. The valves isolate a tapping mach...	12/10/2009
20090199873	Vortex Inhibitor Dispersal Pig A pipeline pig—that moves by pressurized gas flow and provides for distribution of treating liquid subsisting in a lower portion of a pipeline—having a longitudinally extending nozzle located at a forward end of the pig, an array of helical-shaped louvers located on...	08/13/2009
20090114302	Double Block and Bleed Plug A pipe plug includes two or more pivotally connected plugging heads that work in combination to double block and bleed a pipe. At least one of the plugging heads has an expandable sealing element that is in communication with an inflation source. The sealing element may...	05/07/2009
20080273934	Circular Cutter Having Improved Centering Characteristics A circular cutter is provided for use in cutting a hole through a main pipe wall from within a branch pipe, the circular cutter including a shaft rotated about a rotational axis, a circular cutter having at an outer end cutting teeth and an inner end secured to the shaf...	11/06/2008
20080272592	Self-Contained Keyhole Weld Fitting And Method Of Use A method of attaching a branch outlet fitting to a metal pipe buried beneath the earth's surface while causing reduced disturbance to the earth above the pipe, comprising digging a vertical excavation from the earth's surface to expose a short length of the pipe; positi...	11/06/2008
20070158393	System for use in tapping a pipe A mechanical weldable fitting for use in tapping a pipe includes a first and second metal collar, each formed of attachable upper and lower semi-toroidal portions that when assembled on the pipe providing spaced-apart external cylindrical surfaces. Each collar having at...	07/12/2007
20070113622	Methods and systems for hydrostatic testing a pipeline A method of hydrostatic testing a selected section of a pipeline having fluid flow therethrough, including the steps of introducing into the pipeline a pig train including a leading seal pig, a supply liquid slug, a first isolation tool, a test liquid slug and a second ...	05/24/2007
20070044652	Remote monitor system for a longitudinally positionable control bar A remote monitor system for a longitudinally positionable control bar having position indicating indicia thereon including a housing receiving the control bar therein and having an aperture in a sidewall communicating between the control bar and an exterior housing surf...	03/01/2007
20070023096	Isolation tool for plugging the interior of a pipeline An isolation tool for closing a pipeline including a packer module having a cylindrical body member and at least one ring of elastomeric material slidably received on the cylindrical body, the ring being radially outwardly compressible in response to axial force, and in...	02/01/2007
20060260687	Cross-line plugging system and locking plug A method of providing access to the interior of a cross-line that intersects with a primary pipeline of equal or greater diameter includes the steps of attaching a branch fitting to the exterior of the primary pipeline, affixing a full opening valve to the branch fittin...	11/23/2006
20060260686	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 interse...	11/23/2006
20060260685	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 externa...	11/23/2006
20060237060	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 collars...	10/26/2006

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Assignee: TDW Delaware, Inc.