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| Number | Title | Issue Date |
| 7847223 | Electromagnetic pulse welding of fluid joints A metallurgically formed fluid circuit joint includes a hollow fitting (298), a tubular conduit (297), and a metallurgically formed tube/fitting mesh (296). The tube/fitting mesh (296) includes a fitting portion of the hollow fitting (... | 12/07/2010 |
| 7434718 | Device for cutting or welding tubular workpieces or the like 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 ... | 10/14/2008 |
| 7410611 | In-line method and apparatus to prevent fouling of heat exchangers The present invention relates to a method and apparatus for the prevention of fouling of process streams by the application of electric charge on process components. The electric charge may be attractive or repulsive to the foulants, they may be constant or variable... | 08/12/2008 |
| 7367763 | Shrink fit tool holder with grooves A shrink fit tool holder includes a shank or body that includes a tool holder portion, a flange member, a tapered outer surface that generally corresponds to a tapered bore of a spindle, and a central bore or aperture for accommodating a cutting tool. The central bo... | 05/06/2008 |
| 7357188 | Mono-diameter wellbore casing A mono-diameter wellbore casing is formed by radially expanding a first tubular liner off of a mandrel into contact with a second tubular liner. The first and second tubular liners are positioned within the wellbore in an overlapping relationship. The overlapping po... | 04/15/2008 |
| 7348523 | Method of induction weld forming with shear displacement step A shear-assisted solid state welding method for joining of metal parts, involves a first step of heating opposing surfaces in a non-passivating environment to a temperature in the hot working temperature range of the metal. A second step involves bringing the opposi... | 03/25/2008 |
| 7326898 | Method and apparatus for closing or severing a tube using a controllable closure force FIG. 1 depicts a full view of the picnic table backrest. It shows the backrest, the bars that wrap around the bench to keep the back rest stable and the latch on the back of the rest that keeps the rest from slipping out. FIG. 2 shows a close up view o... | 02/05/2008 |
| 7293689 | Two tier brazing for joining copper tubes to manifolds A brazing process for joining copper and copper alloy tubes to a fitting which includes first forming a layer of a high melting temperature noble metal on one end of a copper or copper alloy tube. The plated end is then brazed to a metal ferrule to form a copper all... | 11/13/2007 |
| 7293338 | Tap process for hard workpieces A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence t... | 11/13/2007 |
| 7285762 | Sealing method and apparatus for oil and gas wells Apparatus and method for melting material in the annulus of an oil or gas well and thereby sealing the annulus to prevent shallow gas leakage and the like. Conveniently, the material is positioned within the annulus between the production and surface casing of the w... | 10/23/2007 |
| 7282663 | Forge welding process An automated method for forge welding tubulars including heating the tubular ends to be joined in a welding chamber while the heated tubular ends are maintained aligned and parallel relative to each other and at a small spacing, whereupon the heated tubular ends are... | 10/16/2007 |
| 7263975 | Plastic coated metal fuel rail An improved fuel rail for delivering fuel to a fuel injector for an internal combustion engine is provided that reduces the weight of the fuel injection system, greatly reduces manufacturing costs by eliminating expensive manufacturing methods, such as brazing, high... | 09/04/2007 |
| 7256374 | Induction heating apparatus for controlling the welding parameter of temperature for heat treating a section of piping The present invention relates to a novel induction heating apparatus for controlling the welding parameter of temperature for a pre-weld heating operation, interpass operation, or a hydrogen bake-out operation. Specifically, the present invention relates to using a ... | 08/14/2007 |
| 7240728 | Expandable tubulars with a radial passage and wall portions with different wall thicknesses A tubular liner including a first tubular portion, a second tubular portion, and an intermediate tapered tubular portion coupled to, and positioned between, the first and second tubular portions. ... | 07/10/2007 |
| 7208706 | Shrinking arrangement for a tool holder The invention relates to a shrinking device for shrinking a rotary tool into a central receiving opening of a toolholder which holds said rotary tool in a press fit. The device an induction heating device for thermally expanding the toolholder in the area of the rec... | 04/24/2007 |
| 7199325 | Method for interconnecting tubulars by forge welding A method for interconnecting tubulars by forge welding involves arranging the tubular ends that are to be interconnected at a distance, up to a few millimeters from each other in a shield gas chamber, into which a reducing non-explosive flushing fluid mixture (e.g. ... | 04/03/2007 |
| 7181821 | Joining expandable tubulars A method of joining expandable tubulars includes joining the tubulars by forge welding and flushing a reducing flushing gas around the heated tubular ends during at least part of the forge welding operation such that oxides are removed from the forge welded tubular ... | 02/27/2007 |
| 7156172 | Method for accelerating oil well construction and production processes and heating device therefor Methods are described for providing localized heating in an oil well at precise depths to accomplish or expedite specific objectives. The methods involve the use of a heating tool which can be lowered into an oil well to apply heat at a precise depth to achieve a de... | 01/02/2007 |
| 7143490 | Tap process for hard workpieces A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence t... | 12/05/2006 |
| 7115846 | Shrinking arrangement for tool holder having an induction-heating arrangement A shrinking arrangement for a tool holder is provided which retains a rotary tool with a press fit in a central accommodation opening. The arrangement includes an induction-heating arrangement for thermally expanding the tool holder in the region of the accommodatin... | 10/03/2006 |
| 7077993 | Apparatus for softening a selected portion of a steel object by heating Differential hardening apparatus for softening a portion only of a metal workpiece such as a die block consisting of apparatus for presenting a workpiece to a heat source which impinges heat directly on the workpiece and control means for causing the heat to be dire... | 07/18/2006 |
| 7063142 | Method of applying an axial force to an expansion cone A method of applying an axial force to a first piston positioned within a first piston chamber including applying an axial force to the first piston using a second piston positioned within the first piston chamber. ... | 06/20/2006 |
| 7048802 | CVD reactor with graphite-foam insulated, tubular susceptor The invention relates to a device for depositing especially crystalline layers on especially crystalline substrates by means of reaction gases fed to a heated process chamber. Said process chamber is formed by the cavity of an especially multi-part graphite tube arr... | 05/23/2006 |
| 7044221 | Apparatus for coupling a tubular member to a preexisting structure An apparatus for coupling a tubular member to a preexisting structure. ... | 05/16/2006 |
| 7040396 | Apparatus for releasably coupling two elements An apparatus for coupling two elements including an outer tubular member defining one or more outer tubular member slots, an inner tubular member defining one or more inner tubular member slots positioned within the outer tubular member, and a coupling assembly for ... | 05/09/2006 |
| 7032809 | Seam-welded metal pipe and method of making the same without seam anneal An apparatus and method for making a seam-welded steel pipe free of untempered martensite without seam anneal. The method includes selecting a steel containing a carbon concentration below a predetermined level, for example, 0.14% or 0.12% by weight. The method also... | 04/25/2006 |
| 7015434 | Method of joining together magnetic and nonmagnetic materials A method whereby magnetic and nonmagnetic materials can be joined together firmly and having their joining areas freed from embrittlement and with a minimum of deformation is disclosed. Applied to the process of fitting a ring of nonmagnetic material into an annular... | 03/21/2006 |
| 7011244 | Centering insert and a method of assembling and welding together two pipe elements A centering insert device for centering two pipe elements that are to be welded together end to end, the device comprising a central body supporting a plurality of clamps. The clamps located at the center section planes have a circular conforming effect in at least ... | 03/14/2006 |
| 6966370 | Apparatus for actuating an annular piston An apparatus comprising a first tubular member; a second tubular member positioned within and coupled to the first tubular member; a first annular piston chamber defined by the space between the first and second tubular members; an annular piston movably coupled to ... | 11/22/2005 |
| 6900418 | Induction coil for an inductive shrinking apparatus The induction coil (13) of an arrangement which heats a tool-holder (1) inductively for the purpose of changing a tool shank (11) retained with a press-fit therein has a winding (19), in the case of which the number of coil turns per unit... | 05/31/2005 |
| 6861625 | Shrinking device for a toolholder The invention relates to a shrinking device (1) for shrinking a rotary tool (5) into a central receiving opening of a toolholder (3) which holds said rotary tool (5) in a press fit. The device comprises an induction heating device (15,... | 03/01/2005 |
| 6664522 | Method and apparatus for sealing multiple casings for oil and gas wells Apparatus and method for melting material in any one or a plurality of casings of an oil or gas well and thereby sealing the annulus to prevent gas leakage and the like. The material is positioned within any of the annuluses between the production and sur... | 12/16/2003 |
| 6420686 | Apparatus for joining metal components An apparatus has a single workstation for joining high strength metal components by electromagnetic forming techniques. One of the metal components carries high loads or is subjected to combined stresses and strains, thus requiring that it be relatively s... | 07/16/2002 |
| 6384389 | Eutectic metal sealing method and apparatus for oil and gas wells Apparatus and method for melting metal in the annulus of an oil or gas well and thereby sealing the annulus to prevent shallow gas leakage and the like. Conveniently, eutectic metal is positioned within the annulus between the production and surface casin... | 05/07/2002 |
| 6288373 | Apparatus for amorphous bonding of tubulars An apparatus for amorphous bonding of tubulars (110,111) comprises a double skin jacket (2,113,114) which can be placed around said tubulars (110,111) which skins define a sealed inner fluid space (11,121) which contains shield gas and a heating element (... | 09/11/2001 |
| 6262403 | Apparatus for aligning ends of diffusion bonded materials 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 mater... | 07/17/2001 |
| 6184493 | Vertical diffusion bonding apparatus 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 lo... | 02/06/2001 |
| 6166359 | Induction heating apparatus and method for pipeline welding operations Induction heating apparatus for use in welding an end of a first length of pipe (26) to the exterior surface of a second length of pipe (28), consists of heating assemblies (20, 24) each comprising at least one electrical induction coil (32, 36) wound on ... | 12/26/2000 |
| 6078031 | Method and device for joining oilfield tubulars A method for joining well and other oilfield tubulars by amorphous bonding comprises the steps of positioning a body of amorphous material (16) between adjacent and surfaces of a pair of oilfield tubulars (3, 4) that are to be joined and using induction h... | 06/20/2000 |
| 5777299 | Induction generator to heat metallic pipes with a continuous process under a controlled atmosphere An induction heating generator is described for braze-welding metallic pipes with a continuous process under a controlled atmosphere, comprising at least one heating inductor composed of two half-inductors in series whose winding directions for their wind... | 07/07/1998 |
