Comprising Tube Aligning Means Patents (Class 228/44.5)
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Patent number: 7651018Abstract: A mandrel that provides a counter-force to the pressure exerted on the outside of a pipe or other arcuate surface by a friction stir welding tool, wherein the mandrel is expandable through the use of a wedge, and wherein the mandrel enables multiple friction stir welding heads to simultaneously perform welding on the arcuate surface.Type: GrantFiled: October 5, 2005Date of Patent: January 26, 2010Assignees: SII MegaDiamond, Advanced Metal Products, Inc.Inventors: Scott M. Packer, Jonathan A. Babb, Russell J. Steel, Monte Russell
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Patent number: 7617963Abstract: A clamp assembly is disclosed that can be remotely installed to structurally replace the P4a and P4b welds that join a short radius elbow to the core spray horizontal pipe and the vertical downcomer pipe in the core spray line that delivers cooling water to the reactor core region in a boiling water reactor. The clamp assembly includes three subassemblies, a horizontal pipe clamp subassembly, an elbow restraint subassembly, and a downcomer pipe subassembly.Type: GrantFiled: August 8, 2008Date of Patent: November 17, 2009Assignee: GE-Hitachi Nuclear Energy Americas LLCInventor: Grant Clark Jensen
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Patent number: 7540401Abstract: Method for welding piped (2, 3) to each other, in which the outer side of the one pipe is engaged tightly with the help of first clamping means and the outer side of the other pipe is engaged tightly with the help of second clamping means in which the first and second clamping means are kept in the line and with their ends close to or against each other by means of a rigid frame on which both clamping means are arranged, after which welding means are operated in order to make a welding seam from the outside for connecting both pipes, after which the frame with the first and the second clamping means and with the welding means is moved along and over the other pipe to the other end of the other pipe for repeating the aforementioned steps for welding the other pipe and a next pipe.Type: GrantFiled: November 23, 2004Date of Patent: June 2, 2009Assignee: Vermaat Technics B.V.Inventor: Pieter Huibrecht Vermaat
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Patent number: 7434718Abstract: The invention relates to a device (1) for cutting or welding tubes (3) or similar workpieces, said device comprising a guiding mechanism which is used to control the cutting or welding torch (17) along a pre-determined line and is provided with a stand-type portal (7). Said portal comprises a through opening (8) into which the workpiece (3) to be machined can be guided in the axial direction. A rotary part (14) can be rotated about the axis of the through opening (8) in a motor-driven manner, guiding a holding arm (16) therewith, which carries the cutting or welding torch (17) on the free end thereof. Said holding arm (16) is fixed to the rotary part (14) and embodied in such a way that the cutting or welding torch (17) moves radially in relation to the axis of the through opening (8) and can be brought into various angular positions in relation to the surface of the workpiece (3).Type: GrantFiled: July 8, 2004Date of Patent: October 14, 2008Assignee: Eisenmann Anlagenbau GmbH & Co. KGInventor: Peter Wirth
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Patent number: 7410087Abstract: A welding apparatus is disclosed for use during welding of a tubular metal nozzle to a tank's metal domed cap. The nozzle extends longitudinally between a base end for mating to the tank's cap at an aperture therein and a spaced-away terminal free end. Typically, the nozzle's longitudinal axis is aligned oblique to a normal axis for the domed cap through the aperture thereof. Such welding apparatus involves a clamping arrangement having an actuator extending between a lid and a spaced, opposed backup plate. The backup plate seats against at least a marginal periphery of the domed cap's inner concave surface surrounding the aperture thereof. The lid covers the nozzle's terminal free end. Releasably actuating the actuator increases clamping pressure between the lid and backup plate, thereby clamping the backup plate opposite the weld seam for at least purge purposes, and perhaps light-duty heat-sink purposes.Type: GrantFiled: November 10, 2004Date of Patent: August 12, 2008Inventor: Howard S. Owensby
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Patent number: 7398909Abstract: A collet for holding a workpiece having an axis includes a collet base defining a collet axis. A plurality of contact points that are not integral with the collet base are supported on the collet base for movement relative to the collet base in directions generally toward and away from the collet axis. The collet is self-aligning whereby the contact points help to align the workpiece coaxially with the collet base.Type: GrantFiled: July 16, 2004Date of Patent: July 15, 2008Assignee: Swagelok CompanyInventor: Ronald L. Dick
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Patent number: 7195143Abstract: A boiler tube alignment clamp with a clamp body having a V-shaped channel and two U-bolts bolted to the clamp body opposite the V-shaped channel for use in aligning and holding in place two sections of boiler tube for welding them together. A jacking screw at each end of the V-shaped channel adjusts the boiler tubes for alignment of interior surfaces when the exterior surfaces are uneven.Type: GrantFiled: December 21, 2003Date of Patent: March 27, 2007Inventor: William G. Reeson
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Patent number: 7185798Abstract: An apparatus and method for mechanically reinforcing the weld between a riser pipe and riser brace of a jet pump assembly are characterized by first and second attachment members for attachment on a riser brace of the jet pump assembly, and first and second clamp bodies respectively pivotally mounted on the attachment members for movement to a clamping position. In the clamping position, respective abutment surfaces of the clamp bodies are forced against a riser pipe that is attached to a yoke of the riser brace. The abutment surfaces apply radial forces to the riser pipe, and the radial forces are reacted by forces applied against the yoke by respective engagement elements of the attachment members whereby the riser pipe and riser brace are clamped together between the abutment surfaces and the engagement elements.Type: GrantFiled: April 22, 2004Date of Patent: March 6, 2007Assignee: MPR Associates, Inc.Inventor: Patrick J. Butler
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Patent number: 7089887Abstract: The water wall fit up tool will fit a wide range of tube panel sizes such as ? inch through 3ΒΌ inch tube sizes. It uses the adjacent tubes to force the tube panel into alignment. One unit can fit up two tubes yet can be used in conjunction with two or more tools. The water wall membrane keeps the tubes rigid and the portion of the tube panel where the membrane has been removed allows for movement.Type: GrantFiled: July 1, 2005Date of Patent: August 15, 2006Inventor: Mark W. McClure
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Patent number: 6953142Abstract: Apparatus for locating and grasping a flange include a plurality of clamp arms that move from an unclamped position to a clamped position, clamping the flange to the upper surface of a support platform. A plurality of pins are adapted to move upwardly into flange holes within the flange for positioning the flange during the clamping action. The locating and the clamping of the flange to the upper surface of the support platform are accomplished by a single pusher rod that is connected to both the pins and the clamps. The method comprises using a single pusher rod connected to both the pins and the clamps for locating and clamping the flange to the upper surface of a platform.Type: GrantFiled: September 2, 2003Date of Patent: October 11, 2005Assignee: GSG, LLCInventors: John D. Pingilley, Roger W. Christensen, Njell J. Cooley, Michael J. McCreary, Don Stabenow, John D. Hogue
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Patent number: 6915943Abstract: A line-up clamp unit is powered by a diesel engine which drives a hydraulic pump for operating hydraulic equipment in the unit. The unit includes a line-up clamp which has front shoes, rear shoes and expanding copper back-up tiles. Drive wheels are deployed by a hydraulic cylinder and operated by a hydraulic drive motor. A group of aligning assemblies are electrically operated and fiction to extend L-shaped members to beyond the diameter of the pipe being welded so that the unit can be automatically positioned at the end of a pipe section. A control box includes a radio receiver for receiving control signals and producing corresponding electric control commands for operating the line-tip unit. A remote control radio transmitter has operating, mechanisms, including push buttons and toggle switches, for operating the line-up unit, including the engine, drive motor, brakes, line-up clamp and aligners.Type: GrantFiled: November 27, 2002Date of Patent: July 12, 2005Assignee: CRC-Evans Pipeline International, Inc.Inventor: Brian Scott Laing
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Patent number: 6889887Abstract: A boiler water tube panel alignment device comprising a hydraulic jack system built into a clamp which secures to a metal tab welded to the existing water tube panel. The hydraulic jack is mounted over the new water tube panel to provide the power required for aligning the two boiler water tube panels for welding them together.Type: GrantFiled: December 21, 2003Date of Patent: May 10, 2005Inventor: William G. Reeson
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Patent number: 6840433Abstract: Method for welding piped (2, 3) to each other, in which the outer side of the one pipe is engaged tightly with the help of first clamping means and the outer side of the other pipe is engaged tightly with the help of second clamping means in which the first and second clamping means are kept in the line and with their ends close to or against each other by means of a rigid frame on which both clamping means are arranged, after which welding means are operated in order to make a welding seam from the outside for connecting both pipes, after which the frame with the first and the second clamping means and with the welding means is moved along and over the other pipe to the other end of the other pipe for repeating the aforementioned steps for welding the other pipe and a next pipe.Type: GrantFiled: May 2, 2002Date of Patent: January 11, 2005Assignee: Vermaat Technics B.V.Inventor: Pieter Huibrecht Vermaat
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Publication number: 20040169061Abstract: The invention relates to a welding accessory (1) to support and centre two pipe ends (2a, 2b) to be butt-welded. The welding accessory (1) comprises a central guide frame, (3, 4, 5a-d), over which the two pipes ends (2a, 2b) can be slid, provided with supports (13a-d, 16a-d) and with pressure means, for pressing the supports against the pipes walls. The supports (13a-d) have a triangular or trapezial shape and have a radius of curvature of the pipes. The space between the supports (13a-d) is filled by auxiliary supports (16a-d), also having a triangular or trapezial shape, which are pulled in place by springs (18a-d).Type: ApplicationFiled: April 22, 2004Publication date: September 2, 2004Inventor: Jan Schepers
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Publication number: 20040099713Abstract: A line-up clamp unit is powered by a diesel engine which drives a hydraulic pump for operating hydraulic equipment in the unit. The unit includes a line-up clamp which has front shoes, rear shoes and expanding copper back-up tiles. Drive wheels are deployed by a hydraulic cylinder and operated by a hydraulic drive motor. Brakes are also operated hydraulically. A group of aligning assemblies are electrically operated and function to extend L-shaped members to beyond the diameter of the pipe being welded so that the unit can be retracted and automatically positioned at the end of a pipe section. A control box is mounted to the line-up unit and includes a radio receiver for receiving control signals and producing corresponding electric control commands for operating the hydraulic and electric components of the line-up unit.Type: ApplicationFiled: November 27, 2002Publication date: May 27, 2004Applicant: CRC-Evans Pipeline International, Inc.Inventor: Brian Scott Laing
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Patent number: 6729529Abstract: A system for providing cutting and orbitally welding thin-walled tubing. The system includes a plurality of clamping blocks that hold the tubing while the tubing is trimmed and orbitally welded. The system further includes at least one tooling plate to which the clamping blocks can be mounted such that the tubing is attached to the tooling plate and properly aligned for net length trimming. The system further includes a welding cassette for retaining the clamping blocks and properly aligning the tubing during orbital welding.Type: GrantFiled: February 27, 2002Date of Patent: May 4, 2004Assignee: The Boeing CompanyInventors: Paul J. Cecil, Roger G. Rae, Elton R. Rice
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Publication number: 20040050914Abstract: The invention relates to a method of welding together for example two pie pieces (1,3) having an advance opening. First of all, the first pipe (1) piece is magnetised by contacting the first pipe piece with a magnetic (1,2) element. Then a second pipe (B) piece is positioned with respect to the first pipe piece, such that the surfaces of the pipe pieces to be welded are facing each other. Said surfaces of the pipe pieces are then welded at least partially, whereafter the magnetic element is removed. According to the invention, the magnetic element is positioned between said surfaces of the first (A) and second pipe pieces which are interconnected by welding. The magnetic element covers only a part of said surfaces.Type: ApplicationFiled: June 20, 2003Publication date: March 18, 2004Inventor: Teunis Monster
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Publication number: 20040031840Abstract: The present invention provides a centering insert device (6) for centering two pipe elements (1, 5) that are to be welded together end to end, the device comprising a central body (4) supporting a plurality of clamps (6a-6b, 61-64), said clamps comprising:Type: ApplicationFiled: June 13, 2003Publication date: February 19, 2004Inventor: Michel Baylot
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Patent number: 6662994Abstract: A jig for coaxially welding together a pair of generally coaxial tubular pipe ends meeting at a joint has a pair of support bodies in the pipe ends flanking the joint and each having an outer surface tapering axially inward toward the joint. Respective arrays of wedges are axially displaceable on the surfaces so that as the arrays are displaced apart the respective wedges move radially outward. Respective springs engaging the arrays urge the respective jaws radially together and urge the respective arrays axially toward each other. An abutment between the arrays has annular end faces engageable axially outward with the respective wedges. Thus when the bodies are drawn axially toward each other and the respective wedges are forced radially outward so that, when the arrays are flanking a joint and displaced radially outward, they coaxially center and lock together the pipe ends.Type: GrantFiled: November 16, 2001Date of Patent: December 16, 2003Inventor: Werner Jankus
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Patent number: 6646219Abstract: A tube clamping assembly comprising a first portion having a base and a clamping device carried on the base, and a second portion having a base and a clamping device carried on the base. The first and second portions are coupled to each other such that the portions may be adjusted relative each other. In another embodiment, the invention is a tube clamping assembly comprising a base, and a first movable clamp arm and a first stationary clamp arm coupled to the base for gripping a cylindrical workpiece therebetween. The tube clamping assembly further comprises a second movable clamp arm and a second stationary clamp arm coupled to the base for gripping a cylindrical workpiece therebetween, wherein at least one of the stationary clamp arms is removably coupled to the base.Type: GrantFiled: November 14, 2001Date of Patent: November 11, 2003Assignee: Swagelok CompanyInventors: James M. Kane, Ronald K. Fisher
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Patent number: 6641029Abstract: A holder secured to the tip of a cutting torch supports a guide about which a hole is to be cut in a steel pipe or sheet. A fixture, magnetically attached to the pipe or sheet supports a magnetically retained fitting to be tack welded to the cut hole at the desired angular orientation relative to the pipe or sheet. After the fitting is tack welded, the fixture is removed and the weld is completed.Type: GrantFiled: April 1, 2002Date of Patent: November 4, 2003Inventor: Donald G. Bonnell
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Publication number: 20030160086Abstract: A system for providing cutting and orbitally welding thin-walled tubing. The system includes a plurality of clamping blocks that hold the tubing while the tubing is trimmed and orbitally welded. The system further includes at least one tooling plate to which the clamping blocks can be mounted such that the tubing is attached to the tooling plate and properly aligned for net length trimming. The system further includes a welding cassette for retaining the clamping blocks and properly aligning the tubing during orbital welding.Type: ApplicationFiled: February 27, 2002Publication date: August 28, 2003Inventors: Paul J. Cecil, Roger G. Rae, Elton R. Rice
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Patent number: 6572002Abstract: A positioning device in which an operating member is solid with a mechanical touching member and is displaced together with it by computer controlled displacement devices; both the operating and the touching members are mounted on a common supporting member, thus forming a touching and operating unit on which act the computer controlled displacement devices. The computer is programmed in order to determine by means of the touching member, and to memorize, the positions of a plurality of points on which the operating member should perform its operation, then determining by interpolation the entire work trajectory of the operating member, which may particularly be a welding head; in this case, several touching and operating units form part of a welding apparatus, and particularly of a so-called coupler, intended to automatically perform the inner weldings between the sections of a piping, such as an oil pipeline or the like.Type: GrantFiled: January 28, 2002Date of Patent: June 3, 2003Inventor: Bruno Faroldi
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Patent number: 6450395Abstract: There is provided an apparatus for forming a weld joint between abutting ends of first and second tubular members. The welding apparatus includes a support ring defining an aperture therethrough. The support ring has first and second sides defining a channel therebetween. The first and second sides of the support ring define a plurality of supports spaced about the circumference of the support ring, each of which defines a gripping surface for contacting at least a portion of the exterior surface of a corresponding tubular member to thereby secure the abutting ends of the first and second tubular members at least partially within the aperture of the support ring. The welding apparatus includes at least one friction stir welding tool, which is movably and rotatably mounted within the channel defined by the support ring and projects toward the abutting ends of the first and second tubular members.Type: GrantFiled: August 1, 2000Date of Patent: September 17, 2002Assignee: The Boeing CompanyInventors: Jack Lee Weeks, Peter Oelgoetz
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Patent number: 6428908Abstract: What is described here is an electrical and mechanical contact consisting of a rigid background, a flat thin bond structure and a bond connection, as well as a method of electrically and mechanically connecting a flat thin bond structure with a rigid background by means of a bond head. In an approach to permit the production of bond contacts on a minimum of space with the smallest pitch spacings possible up to 50 &mgr;m it is proposed that the bond structure presents a hole and that the bond connection is substantially a bond element which extends from the background through the hole in the bond structure up to a zone located above the bond structure, and that the bond element, in the area located above said bond structure, extends laterally at least partially beyond said hole in said bond structure, thus ensuring the contact of the background with the underside of said bond structure.Type: GrantFiled: June 27, 2000Date of Patent: August 6, 2002Assignee: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung e.V.Inventor: Hansjorg Beutel
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Patent number: 6398101Abstract: A bi-directional compliant precision linear slide apparatus having a base that supports two side bearing blocks, side rails and an internal air cylinder. The bearing blocks allow for a set of side rails to be moved in a first direction via the introduction or expelling of air to and from the air cylinder. A top rail allows for a top mounting bracket to be moved back and forth in a second direction, and a set of spring loaded plungers facilitate the precise positioning of the top mounting bracket within the top rails prior to bracket engagement to tube. The top mounting bracket is connected to a first component that is to be welded to a second component. Thus, by controlling the precise position of the top mounting bracket, the gap between the two components is controlled thereby affecting the type and quality of weld needed, reducing the amount of the weld time, and reducing the amount of heat introduced into the two components during the welding process.Type: GrantFiled: May 31, 2001Date of Patent: June 4, 2002Assignee: Dimensional Tooling Solutions, Inc.Inventor: Patrick W. Pollock
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Patent number: 6398100Abstract: A back-up clamp suitable for backing up a weld to be formed between adjacent pipe lengths in a pipeline, the clamp having a rigid clamp body, at least one set of clamping members mounted upon the clamp body, a set of back-up shoes mounted upon the clamp body, the set of clamping members and the set of back-up shoes being movable relative to the body, movement of the set of clamping members and the set of back-up shoes being controlled by fluid pressure applied to at least one location of the clamp, the clamp having a number of conduits adapted to deliver pressurised fluid to the location(s), all of each conduit being located within the body. The invention permits the provision of a back-up clamp which requires no flexible or external fluid hoses, and permits the manufacture of a back-up clamp suitable for use with small-diameter pipelines.Type: GrantFiled: April 28, 2000Date of Patent: June 4, 2002Inventors: Kevin Alan Radbourne, Zdzislaw Leon Drewnicki, John Simon Eastham, Keith Vickery
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Publication number: 20020060236Abstract: A jig for coaxially welding together a pair of generally coaxial tubular pipe ends meeting at a joint has a pair of support bodies in the pipe ends flanking the joint and each having an outer surface tapering axially inward toward the joint. Respective arrays of wedges are axially displaceable on the surfaces so that as the arrays are displaced apart the respective wedges move radially outward. Respective springs engaging the arrays urge the respective jaws radially together and urge the respective arrays axially toward each other. An abutment between the arrays has annular end faces engageable axially outward with the respective wedges. Thus when the bodies are drawn axially toward each other and the respective wedges are forced radially outward so that, when the arrays are flanking a joint and displaced radially outward, they coaxially center and lock together the pipe ends.Type: ApplicationFiled: November 16, 2001Publication date: May 23, 2002Inventor: Werner Jankus
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Patent number: 6386421Abstract: An actuation system for a clamping assembly for use in a pipe clamping apparatus, including a shaft and an actuator defining an actuator chamber having a peripheral chamber wall. The actuator is movably mounted about the shaft such that the shaft extends through the actuator chamber and the actuator is longitudinally reciprocable thereon. A piston is fixedly mounted about the shaft and positioned within the actuator chamber. The piston has first and second sides and an outer perimeter sealingly engaging the peripheral chamber wall to create first and second chambers such that the actuator reciprocates along the shaft in response to a differential force applied within the first and second chambers. The clamping assembly is associated with the actuator such that reciprocation of the actuator along the shaft causes the clamping assembly to move radially relative to a longitudinal axis of the shaft.Type: GrantFiled: June 6, 2001Date of Patent: May 14, 2002Assignee: Proline Pipe Equipment, Inc.Inventors: Clifford J. Anderson, Brian R. Thicke, Mark R. Sawa
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Patent number: 6382496Abstract: Handle clamps and a clamping kit for clamping or clamping and fastening a mold during exothermic welding are disclosed in which a single handle clamp may be utilized in at least three different exothermic welding operations. The handle clamp may be utilized with or without removable support arms to simply clamp the mold parts together where only the ends of cables are to be connected together within a cavity of the mold. If it is desired to connect the cables to either a flat surface or a curved surface, the support arms are attached to the handle clamp, and either a magnetic fastening assembly or a chain assembly is attached to the support arms to fasten the handle clamp and mold to the respective differently shaped surfaces.Type: GrantFiled: July 27, 2000Date of Patent: May 7, 2002Assignee: Harger, Inc.Inventor: Timothy R. Harger
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Patent number: 6283361Abstract: A general-purpose jig is provided which includes a base, a locational holding device mounted on the base and having a tripod robot that includes three expansion actuators, and a clamp attached to the locational holding device. The position of the clamp can be changed by changing the length of each of the expansion actuators, depending upon an object to be held, according to a command from a control device. The locational holding device may further include a three-axis rotary unit located between the clamp and the tripod robot. The posture of the clamp can be kept constant by controlling the three-axis rotary unit while the clamp is being moved by the expansion actuators.Type: GrantFiled: December 29, 1998Date of Patent: September 4, 2001Assignee: Calsonic CorporationInventors: Yuzuru Maki, Takahiko Arai, Shinichi Saito, Daisuke Kikuchi, Masahiro Ohkawara
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Patent number: 6262403Abstract: A diffusion bonding method having a step of adjusting ends of material to be bonded before bonding the material after setting the materials in the diffusion bonding apparatus, whereas a diffusion bonding apparatus having a means of finishing ends of materials to be bonded so that both ends face parallel to each other.Type: GrantFiled: August 24, 1999Date of Patent: July 17, 2001Assignee: Daido Tokushuko Kabushiki KaishaInventors: Masaki Tsuchiya, Takao Shimizu, Hiroaki Suzuki
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Patent number: 6257479Abstract: A back-up tooling apparatus for supporting the inner side of a hollow cylindrical workpiece during a circumferential friction stir weld includes a plurality of arcuate shoes configured to mate end-to-end to form a substantially continuous ring, and an expandable support for supporting the shoes and operable to retract and expand the shoes inward and outward. The expandable support includes at least one rotatable feed screw and central support members mounted on the feed screw or screws and pivotally connected to the shoes by support arms. The central support members are moved axially toward or away from each other for expanding or retracting the shoes. The shoes in one embodiment overlap in the circumferential direction, and a seal material is disposed between mating end faces of adjacent shoes. A restraining device is provided for clamping about the workpiece to reduce thermal expansion thereof. Cable-and-winch and geared drive devices are provided for rotatably driving the workpiece from its outer surface.Type: GrantFiled: December 7, 1999Date of Patent: July 10, 2001Assignee: The Boeing CompanyInventors: Edward Litwinski, Leo Delangis, Juan Valdez
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Patent number: 6234383Abstract: A method and apparatus for circumferential application of materials to an interior surface of a curved pipe includes providing a pipe support with a rotational axis. A curved section of pipe is mounted to the pipe support. An arm supporting an applicator head is positioned within the curved section of pipe. The pipe support is rotated about the rotational axis, while coordinating movement of the arm to maintain the applicator head in a working position within the curved section of pipe.Type: GrantFiled: October 6, 1999Date of Patent: May 22, 2001Assignee: Almac Machine Works Ltd.Inventors: Fred Harmat, Graeme Van Dongen
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Patent number: 6226855Abstract: Two outer steel pipes (16 and 16A) are each lined by corrosion resistant lining pipes (18 and 18A) of compressible plastics material which stop short of the ends (20, 20A) of the outer pipes to leave an annular recess or counterbore (24 and 24A) at each of those ends. A tubular bridging-member (2) of ductile, plastically deformable, corrosion resistant material, for example brass or stainless steel has two tubular end portions (4 and 6) extending in opposite directions from an intermediate tubular portion (8) having an outer diameter greater than that of the end portions (4 and 6) and an inner diameter greater than that of the said end portions. The end portions (4 and 6) are encircled by ribs (12). Initially the outer diameter of the end portions (4, 6) is less than that of the inner diameter of the lining pipes (18, 18A). Thus each lined pipe (16, 16A) can be fitted over the respective end portions (4 and 6) with the intermediate portion (8) occupying the combined counterbore (24, 24A).Type: GrantFiled: June 18, 1999Date of Patent: May 8, 2001Assignee: Lattice Intellectual Property Ltd.Inventor: Leslie Maine
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Patent number: 6220498Abstract: An apparatus and method for use in welding together sections of coiled tubing (6) in the oil industry, wherein the apparatus has a container (14), legs (12) which can be adjusted to adjust the height of the container (14), welding apparatus in the container and slots in the walls of the container. In use the container is raised to the height of the coiled tubing which is to be joined. A winch pulls the ends of the coiled tubing towards a clamp, which holds the two ends of the coiled tubing fixed inside the container, while the ends are welded together. The slots in the walls allow the joined tubing to pass out of the container after the weld is completed. The container provides a controlled environment for welding and weld inspection.Type: GrantFiled: August 6, 1999Date of Patent: April 24, 2001Assignee: Agais Offshore LimitedInventors: Alec Gordon, Ashley Thomson
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Patent number: 6184493Abstract: A vertical diffusion bonding apparatus is provided with a lower block, a pressurizing jig which is fitted to a metal pipe supplied from an upper position, and a pressurizing mechanisms stood erect on the lower block. The lower metal pipe is held by the lower block and the pressurizing jig bonded to the metal pipe is attracted toward the lower block by using the pressurizing mechanisms. Thus, the metal pipe which is supplied from an upper position is pressed against the lower metal pipe.Type: GrantFiled: August 18, 1999Date of Patent: February 6, 2001Assignee: Daido Tokushuko Kabushiki KaishaInventor: Masaki Tsuchiya