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| Number | Title | Issue Date |
| 7476824 | Welding apparatus for resistance welding heat exchanger tube to tubesheet Welding apparatus includes a first electrode having an electrode surface adapted to contact an outward end fold of a heat-exchanger tube which is positioned in an orifice of a tubesheet with the fold contacting an outward-facing side of the tubesheet. A second elect... | 01/13/2009 |
| 7423232 | Method for resistance welding/brazing a tube to a member A method for welding/brazing a tube to a member. The tube has an axially-extending first portion and has a tube form which extends transversely from the first portion. A filler material is obtained. The tube, the member and the filler material are positioned such th... | 09/09/2008 |
| 7399264 | High frequency induction welding of austenitic stainless steel for pressure vessel tubing A process for producing high pressure tubing from austenitic stainless steels. The process entails passing a continuous austenitic stainless steel strip through pre-weld rolls enclosed in a forming housing to produce a continuous tubular shape having opposing edges ... | 07/15/2008 |
| 7399942 | Method for projection bonding of telescoped tubes A pair of tubes are provided, one of greater diameter than the other so that the tubes can be telescoped together. An annular inward facing projection is formed on the outer tube for contact with the outside surface of the inner tube when the tubes are telescoped to... | 07/15/2008 |
| 7386927 | Apparatus to roll, cut, weld, and form tank car outer jackets A system and method of fabricating tank car outer jackets are provided that include supporting a plurality of coils of sheet metal on a plurality of coil supports such that the central longitudinal axes of the plurality of coils are generally parallel to a central l... | 06/17/2008 |
| 7372007 | Medium voltage heater element An electrical heater bundle has heater elements, each including a metal tube, an electrical resistance coil within the tube, a conductor pin connected to the coil and protruding from an end of the tube, and an electrical insulation powder surrounding the coil within... | 05/13/2008 |
| 7323653 | Deformation resistance welding of sheet metal, tubes, and similar shapes Welded structures having a first and a second member formed from sheet metal, tubes, and similar shapes, are economically fabricated through use of a method for joining a second member to a first member having a folded rim extending therefrom. The folded rim defines... | 01/29/2008 |
| 7300536 | Method for attaching intersecting tubes A method is provided for attaching together a larger tube and a smaller tube in a T-shaped intersecting joint. A hole is formed in the larger tube with a flange surrounding the hole. A circumferential extending flange is formed on the outside of the smaller tube. Ad... | 11/27/2007 |
| 7253374 | Sheet-to-tube welded structure and method Method of welding a metal sheet and metal tubing as well as a welded sheet-to-tube welded structure wherein the tube-to-sheet gage ratio may be reduced to permit use of metal tubing having a reduced wall thickness. One or more intermediate metal bridging members is/... | 08/07/2007 |
| 7253372 | Method for welding heat exchanger tube to tubesheet One method for welding includes obtaining a heat-exchanger tube having an outward fold. The tube is inserted at least partially through the orifice of a tubesheet with the fold contacting one of the outward and inward facing sides of the tubesheet. A first electrode... | 08/07/2007 |
| 7076987 | Method of producing tapered or pointed cannula A method of producing a tubular device is provided. The method comprises providing a tubular stock having an axial passage, heating the tubular stock at a first heating location to form a softened section, the softened section separating a workpiece portion of the t... | 07/18/2006 |
| 7060929 | Sheet-to-tube resistance spot welding using servo gun A method of spot welding a sheet overlapped to a tube with a servomotor-driven electrode applying a clamping force to the sheet. Over a first clamping time interval, the clamping force is increased to a first force level, at which point a welding current is applied ... | 06/13/2006 |
| 7036708 | Manufacturing method of piston for swash plate type compressor with variable capacity In a friction stir welding method of manufacturing a piston for a variable capacity swash plate type compressor, the welder is shifted from the welded portions to a predetermined position while maintaining contact between the welder and one of the piston members. Af... | 05/02/2006 |
| 7028882 | Process and apparatus for boiler tube panel welding and straightening An apparatus and process for depositing an overlay weld on a boiler tube panel comprising a plurality of tubes with adjacent tubes joined together with membranes therebetween, and then straightening the panel in response to bowing that occurs as a result of depositi... | 04/18/2006 |
| 7022940 | Combustor linear and method for making thereof A combustor liner is provided having first and second annular bands which define an overlapping circumferential joint area, wherein a weld is disposed in the joint area encompassing substantially all of the axial length of the joint area. A method for producing such... | 04/04/2006 |
| 6998560 | Method for metallurgically joining a tube to a member A method for metallurgically joining a tube to a member. A tube having a flange is obtained, and a member is obtained. A welding/brazing electrode wheel is obtained having an axis of rotation and having a rim. The tube and the member are positioned with the flange c... | 02/14/2006 |
| 6953907 | Method for metallurgically joining a tube to a member A method for metallurgically joining a tube to a member. A tube having a flange is obtained, and a member is obtained. The tube and the member are positioned with the flange contacting the member directly and/or indirectly through an intervening welding/brazing join... | 10/11/2005 |
| 6953140 | Friction stir welding apparatus of piston for swash plate type compressor with variable capacity A friction stir welding apparatus of a piston for variable capacity swash plate type compressor bonds two pistons through frictions stir welding without forming a hole in welded portions of the piston members. The friction stir welding apparatus includes: A support ... | 10/11/2005 |
| 6939082 | Subea pipeline blockage remediation method The method of taking a remotely operated vehicle to the ocean floor to land on and move along a subsea pipeline above or below the seafloor and repeatedly circulate seawater which has been heated electrically, mechanically, or chemically across the outer surface of ... | 09/06/2005 |
| 6875944 | Method for resistance welding/brazing a tube to a container A method for resistance welding/brazing a tube to a container. A tube is obtained having an axially-extending first portion and a tube form which extends transversely from the first portion. A container is obtained having an orifice. A support tool is obtained with ... | 04/05/2005 |
| 6847001 | Method for metallurgically joining a tube to a member A method for metallurgically joining a tube to a member. A tube is obtained having a longitudinal axis and having an end portion, wherein the end portion includes a fold, and wherein the fold includes longitudinally-spaced-apart first and second fold portions. A mem... | 01/25/2005 |
| 6791051 | Method for metallurgically attaching a tube to a member A method for metallurgically attaching a tube to a member. A member having a wall is obtained. The wall includes opposing first and second sides and includes a partial extrusion extending above the first side. The partial extrusion has a through hole. A tube having ... | 09/14/2004 |
| 6791052 | Method for resistance welding a tube to a member A method for resistance welding a tube to a member. A tube is obtained having an axially-extending first portion and having a tube form which extends transversely from the first portion. The tube form has at least one axial projection. The tube and the member are po... | 09/14/2004 |
| 6765170 | Method for single sided spot welding A method of single sided spot welding includes the steps of providing a metal tube having a convex surface portion and providing a metal sheet for welding to the metal tube. The method also includes the steps of contacting the metal sheet with the convex surface por... | 07/20/2004 |
| 6717091 | Method for metallurgically attaching together two tubes A method for metallurgically attaching together two tubes. A first tube is obtained having a far wall portion with a first through hole and a near wall portion with a second through hole. A second tube is obtained including first and second outward folds. The tubes ... | 04/06/2004 |
| 6713707 | Welding material and method without carrier A welding material is constructed and arranged to be positioned in electrically conductive relation between exterior surface portions of first and second weldable members at a location where the first and second weldable members are to be joined. The welding materia... | 03/30/2004 |
| 6703093 | Friction welding In one aspect the invention provides a friction welded component, and a method of manufacture for such a component, comprising a pair of upstanding tubular members (6,8) which are friction welded at their respective end cross-sections, in coaxial concentr... | 03/09/2004 |
| 6693251 | Method for manufacturing a metallic tubular assembly A method for manufacturing a tubular assembly. A first tube is obtained. A first tubular connector is obtained having a first and second end portions. The first end portion is metallurgically attached to the first tube. A tubular member is obtained having... | 02/17/2004 |
| 6689981 | Method for metallurgically capping an end of a tube A method for metallurgically capping an end of a tube. A tube is obtained having a tube end portion and having a passageway which extends to the tube end portion A cap is obtained and positioned on the tube end portion covering the passageway. The tube en... | 02/10/2004 |
| 6621037 | Welding material with conductive sheet and method A welding material assembly is constructed and arranged to position a welding material in electrically conductive relation between exterior surface portions of first and second weldable members at a location where the first and second weldable members are... | 09/16/2003 |
| 6552294 | Method for metallurgically attaching together two members A first method for metallurgically attaching together two members. A first member is obtained having a through hole and having a longitudinally-projecting flange surrounding the through hole. A second member is obtained having a transversely-projecting an... | 04/22/2003 |
| 6548780 | Techniques for resistance welding attachments to small pressure vessels A technique for resistance welding an attachment such as a collar or base ring to a tank head section by causing welding current to flow through weld protrusions disposed on the attachment and which are pressed against the tank section. Electrodes are con... | 04/15/2003 |
| 6545246 | Profiling arrangement with a roll forming machine and with a welding device A profiling arrangement (1) with a roll forming machine (2) including several roller-type forming tools (6) and with a welding device (3) positioned in its processing path makes possible the application of more than one weld joint to a workpiece (51, 52, ... | 04/08/2003 |
| 6477774 | Method of manufacturing a vehicle frame assembly An apparatus and method are provided for initially performing a heat treatment process on a closed channel structural member to facilitate the subsequent performance of a magnetic pulse welding process so as to manufacture a vehicle frame component or a p... | 11/12/2002 |
| 6417482 | Method and device for producing pipes A number of tubes that are about to be welded, or have already been welded, are positioned on a table. The seam of each tube is welded by a laser welding unit. While one tube is being welded, it is possible to load the other positions of the table with tu... | 07/09/2002 |
| 6403916 | System and automated method for producing welded end closures in thin-walled metal tubes An automated system, method and apparatus for producing welded end closures in thin-walled metal tubes, preferably sealing a radioactive source inside the tubes, by use of an electronically controlled robot that grasps and sequentially repositions the tub... | 06/11/2002 |
| 6398101 | Bi-directional compliant precision linear slide 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 introductio... | 06/04/2002 |
| 6373021 | Method for electrical resistance welding a metal tube to a metal sheet A method for forming an electrical resistance weld between a metal tube and a metal sheet is disclosed. In the method, a plurality of generally circular protrusions having generally triangular cross sections is formed upon the sheet. Thereafter, electrode... | 04/16/2002 |
| 6365865 | Process for welding fixture pipes to opposite ends of hollow stabilizer's suspension arm for vehicle A welding process in which fixture pipes 3 are resistance welded to opposite ends of a hollow stabilizer's suspension arm 1 for a vehicle and thereafter, these two parts are subjected to arc welding, but with a first step of the ends of the hollow stabili... | 04/02/2002 |
| 6355899 | Tube clamping assembly 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 th... | 03/12/2002 |
