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| Number | Title | Issue Date |
| 7381476 | Structural element having a metal wall of generally tubular shape At least one plane blank (20) is cut out from a sheet of metal material, the blank comprising a main part having the developed shape of the wall of the structural element and at least one additional overlap and fixing tab (26, 27, 28), the cutout blank... | 06/03/2008 |
| 7314067 | Design and manufacturing method for multi-material tube structures The present invention provides an improved tubular structure which uses the properties of different materials, such as stiffness, strength, and density are exploited in a manner which combines the most attractive characteristics of existing metal and composite tubes... | 01/01/2008 |
| 7225868 | Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe (1) A steel pipe that is expanded radially in a state wherein it was inserted in a well such as an oil well, characterized in that the non-uniform wall thickness ratio E0 (%) before expanding satisfies the following expression {circle around (1)}. E... | 06/05/2007 |
| 7207354 | Design and manufacturing method for multi-material tube structures The present invention provides an improved tubular structure which uses the properties of different materials, such as stiffness, strength, and density are exploited in a manner which combines the most attractive characteristics of existing metal and composite tubes... | 04/24/2007 |
| 7171988 | Tubing for hydrostatic forming, hydrostatic forming apparatus, and hydrostatic forming method using the apparatus A tubing including an overlap portion formed by the first and second circumferential end portions overlapping and joined with each other, and a fluid leakage preventing member for preventing pressurized fluid from leaking from the tubing upon the tubing being subjec... | 02/06/2007 |
| 7159317 | Inner metal link bushing for a vibration isolator and method for forming An inner metal link bushing is formed by providing flat steel stock having a chamfered edge disposed at an angle relative to the surfaces such that, when the flat stock is reshaped to a tubular formation, the edges forming a longitudinal seam will initially contact ... | 01/09/2007 |
| 7157672 | Method of manufacturing stainless steel pipe for use in piping systems A welded low carbon dual phase (ferrite plus martensite) and/or low carbon martensitic stainless steel PIPE having requisite yield strength and corrosion and/or erosion resistance is shown. Pipe can be manufactured up to a maximum outside diameter from finished plat... | 01/02/2007 |
| 7052753 | Multiple layer polymeric films and process for making them Novel films, and processes for making them, are provided. The films are characterized by the inclusion of a layer of vinylidene chloride copolymer between at least two other layers which contain ethylene vinyl acetate, and optionally linear low density polyethylene.... | 05/30/2006 |
| 6915820 | Automotive fluid tubing, especially for fuel and hydraulic fluid An automotive fluid tubing, especially for gasoline, diesel fuel or hydraulic fluid, and composed of metal can be provided with a tube coating of aluminum and then a polyamide 12 layer which is extruded onto the aluminum coating. The polyamide extruded layer greatly... | 07/12/2005 |
| 6897399 | Hollow metal object and method of its fabrication Manufacturing narrow-diameter hollow metal objects utilizing metals difficult to work plastically has been problematic with conventional manufacturing methods; the narrower the diameter the higher the manufacturing cost has been, and under some circumstances manufac... | 05/24/2005 |
| 6880220 | Method of manufacturing cold worked, high strength seamless CRA PIPE A process produces a welded seamless PIPE having good yield strength and excellent corrosion and/or erosion resistance. Up to a maximum outside diameter corrosion and/or erosion resistant CRA PIPE is cold worked from a welded hollow, rather than using the traditiona... | 04/19/2005 |
| 6872463 | Reinforcing rod for body and/or chassis elements for a motor vehicle A reinforcing bar for body and/or chassis parts of a motor vehicle includes a one-piece element (8) extending from one end of the bar to the other and having a median portion (10) with closed tubular cross-section and at least one end portion (12 | 03/29/2005 |
| 6870143 | System and method for encapsulating a pipe An apparatus for encapsulating a connection of a pipe for transporting a fluid is provided. The apparatus includes a first section having at least one electrocoil surface operable to sealingly engage a surface of the pipe. The apparatus further includes a second sec... | 03/22/2005 |
| 6851455 | Stainless steel oil feeding pipe A fuel-filler tube, which is made of a welded pipe of corrosion-resistant austenitic or ferritic stainless steel, has a fuel-supply opening with high dimensional accuracy. The austenitic stainless steel has hardness of 180 HV or less with a work-hardening coefficien... | 02/08/2005 |
| 6842957 | Process for producing a tubular component Process for producing a tubular component which comprises sections which are intentionally different from one another with regard to one or more aspects selected from the group consisting of aspects including material, thickness, size, more specifically circumferenc... | 01/18/2005 |
| 6782921 | High-strength steel pipe excellent in formability and burst resistance A high-strength steel pipe excellent in formability and burst resistance wherein, when a high-strength steel pipe exceeding 850 N/mm2 in tensile strength is produced by a UOE method, a ratio (R/r) of an average radius of curvature in a range of 120 mm in ... | 08/31/2004 |
| 6749954 | Welded steel pipe having excellent hydroformability and method for making the same A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.03% to about 0.2% C, about 2.0% or less of Si, not less than about 1.0% to about 1.5% Mn, about 0.1% or le... | 06/15/2004 |
| 6723453 | Welded steel pipe having excellent hydroformability and method for making the same A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.05% to about 0.2% C; about 0.2% or less of Si; about 1.5% or less of Mn; about 0.1% or less of P; about 0.... | 04/20/2004 |
| 6715954 | Instrument support member An instrument support member with an integrated air conducting unit to be mounted between the A-columns of a motor vehicle is composed of at least two metal shells which are connected to each other by plasma jet welding with an effective focus remote from the nozzle... | 04/06/2004 |
| 6682829 | Welded steel pipe having excellent hydroformability and method for making the same A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition comprising, on the basis of mass percent: about 0.05% to about 0.3% C; about 2.0% or less of Si; more than about 1.5% to about 5.0% Mn; about 0.1... | 01/27/2004 |
| 6619915 | Thermally free aft frame for a transition duct A transition duct with a thermally free aft frame for use in a gas turbine engine is disclosed. The transition duct includes an aft frame that is thermally free through the use of a plurality of retention lugs, bushings, and bulkhead assemblies. The aft f... | 09/16/2003 |
| 6575198 | Method of connecting two elongated portions of metallic plate, method of manufacturing exhaust pipe of two-passage construction, and exhaust pipe of two-passage construction In manufacturing an exhaust pipe of two-passage construction, a metallic plate having a first end and a second end respectively elongated in a longitudinal direction of the exhaust pipe is prepared. The metallic plate is bent into a substantially S shape ... | 06/10/2003 |
| 6532995 | Super-high-strength line pipe excellent in low temperature toughness and production method thereof To provide a super-high strength line pipe that is excellent in low temperature toughness, can be field welded easily, and has a tensile strength of at least 900 MPa (exceeding ×100 of the API standard), and a production method thereof. The present inven... | 03/18/2003 |
| 6527015 | Insulated pipe Pipes or pipelines insulated on their surface or surfaces are described. The pipes or pipelines may be for submerged service, below the surface of water. The insulation chosen may be an epoxy substantially free of phenolics and one or more of glass or cer... | 03/04/2003 |
| 6406564 | Electric welded boiler steel pipe This invention provides a boiler steel pipe that exhibits a high creep rupture strength on a high-temperature high-pressure side and is excellent in electric weldability, and an electric welded boiler steel pipe having fewer defects at an electric welded ... | 06/18/2002 |
| 6405761 | Expandable metal-pipe bonded body and manufacturing method thereof The present invention provides a metal pipe bonded body formed from a plurality of metal pipes. Each metal-pipe is formed with an elongated, pre-formed portion at each end, and a central portion, each elongated, preformed portion having a constant inside ... | 06/18/2002 |
| 6397895 | Insulated pipe Pipes or pipelines insulated and optionally coated on their interior surface or surfaces are described. Pipes or pipelines insulated and optionally coated on their exterior surface or surfaces are also contemplated, The pipes or pipelines may be for subme... | 06/04/2002 |
| 6379821 | Martensitic stainless steel welded pipe This invention relates to a large-diameter, thick-wall martensitic stainless steel welded pipe. For this welded pipe, the size of the raised weld bead portion on the inside surface is restricted to be small based on a conditional formula derived by consid... | 04/30/2002 |
| 6374865 | Method and apparatus for manufacturing a header pipe In the method and apparatus of making a header pipe, the end faces of the edge portions of a flat plate, which have been respectively cut into a given shape according to a trimming operation, are then respectively face-struck into a linear shape. Also, in... | 04/23/2002 |
| 6325107 | Metal pipeline having a protective coating layer for an automobile A metal pipeline for use in an automobile having a protective coating layer comprising a metal tube, a zinc-nickel alloy plating layer formed on the outer circumferential surface of the metal tube, a chromate layer formed on the zinc-nickel alloy plating ... | 12/04/2001 |
| 6283157 | Sweat flange, piping system and method of use A sweat flange, piping system utilizing the same, and method of installing a circulator to a copper pipe. The sweat flange includes a base portion having a predetermined shape and at least two bolt openings dimensioned to accept at least two mounting bolt... | 09/04/2001 |
| 6273325 | Nozzle assembly and method of manufacturing same A method of manufacturing a nozzle assembly and a nozzle formed thereby in which first and second body portions are formed and connected together to form an enclosure, and one end of the enclosure is connected to a flange assembly.... | 08/14/2001 |
| 6220306 | Low carbon martensite stainless steel plate A hot rolled martensite stainless steel plate which is excellent in formability and corrosion resistance has a chemical composition comprising, by mass %, 0.05% or less carbon, 10 to 15% chromium, 0 to 3% molybdenum, 0 to 0.75% titanium, and 1 to 8% nicke... | 04/24/2001 |
| 6135160 | Multi-wound stainless steel pipe A multi-wound stainless steel pipe produced by plastic-deforming a hoop material made of a stainless steel sheet applied with a Cu-brazing material on the surface thereof to a multi-wound pipe and after melting the brazing material between the walls of th... | 10/24/2000 |
| 6085800 | Lapped steel tube A lapped steel tube which is improved in resistances to the repeated high-pressure fatigue and the cavitation erosion, in the vibration resistance and in the fitting properties to eliminate the clearances between its inner, outer and intermediate pipes an... | 07/11/2000 |
| 6073658 | Elbow for conveying particulate matter An elbow for conveying particulate material comprising a plurality of tubular shaped sections jointed at a junction to form a flow passage having a bend for changing the direction of material being transported wherein the sections consist essentially of s... | 06/13/2000 |
| 6050301 | Al alloy composite tube for refrigerant passages and method for producing the same There is disclosed an Al alloy composite tube for refrigerant passages, made by extruding, or extruding and drawing a two-layer composite pipe obtained by shrink-fit of a tubular Al alloy inner material to the inside of a tubular Al alloy core, or a three... | 04/18/2000 |
| 6006789 | Method of preparing a steel pipe, an apparatus thereof and a steel pipe A steel mother pipe obtained by a solid phase butt-welding pipe-making process or a welding pipe-making process is reduced by heating the pipe prior to the reduction at a temperature exceeding 100° C. and lower than 800° C. wherein the temperature of th... | 12/28/1999 |
| 5996633 | Heat-exchanging conduit tubes for laminated heat exchanger and method for producing same Heat-exchanging conduit tubes for a laminated heat exchanger made of aluminum material containing aluminum alloy having a brazing material claded and formed by folding one plate or overlaying two plates and brazing to connect edge joints of the folded pla... | 12/07/1999 |
| 5934337 | Field installed insulating system There is provided an insulation kit comprising an inner waterproof layer for contacting a pipe to be insulated. On the outside of the inner waterproof layer there is insulation. Then, on the outside of the insulation there is a protective layer to guard t... | 08/10/1999 |
