Workpiece With Longitudinal Passageway Or Stopweld Material (e.g., For Tubular Stock, Etc.) Patents (Class 428/586)
  • Publication number: 20100038211
    Abstract: The invention relates to a method and a blank for producing a screw-tube conveyor in the form of a cylindrical rotary tube (110) with an internal screw spiral (120) for conveying and mixing a bulk material. To simplify the method and to create even long screw-tube conveyors with small diameters in relation to their length, it is proposed according to the invention first to produce a one-piece blank, which comprises a base portion in the basic form of a parallelogram and having laterally mounted fins. In a second method step, the fins are then bent, preferably by 90°, with respect to the base portion. In a third method step, the base portion (112) is then bent along bending lines (115i) in such away that the base portion forms a helical casing portion (111) of the rotary tube (110) and the previously bent-round fins (122) form segments of the screw spiral (120) arranged inside the rotary tube (110). The invention also relates to a screw-tube conveyor produced in this way.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 18, 2010
    Inventors: Urban Stricker, Frank Woelfle
  • Patent number: 7653999
    Abstract: A method is provided for successfully rolling co-extruded tubing into drums of a boiler bank. First, a co-extruded tube is provided, containing a carbon steel base tubing with an outer layer of high alloy tubing. Next, the outer layer of high alloy tubing is removed by machining in the area of the co-extruded tubing that is to be rolled into the drum. Then, the co-extruded tubing is swaged using multiple swaging steps and annealing treatments. The co-extruded tubing is swaged to the required diameter and wall thickness. Finally, co-extruded tubing is inserted, rolled, and sealed into the drums.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: February 2, 2010
    Assignee: Babcock & Wilcox Canada Ltd.
    Inventors: Dirk B. Varo, Edward F. Stortz
  • Publication number: 20100021755
    Abstract: This manufacturing apparatus for a multi-channel tube having a plurality of parallel channels includes: a crucible; and a die set for forming the multi-channel tube from molten copper supplied from the crucible, the die set including: a hollow portion having an inner surface shaped like the profile of the multi-channel tube; punches which are inserted into the hollow portion from an inlet end of the hollow portion to define a space between the inner surface of the hollow portion and each of the punches; and a feed passage which is disposed between the crucible and the space, and configured to feed the molten copper from the crucible to the space, the molten copper being supplied from the crucible to the space within the die set through the feed passage to solidify as it passes through the hollow portion.
    Type: Application
    Filed: December 14, 2007
    Publication date: January 28, 2010
    Applicants: CTA TECHNOLOGY (PRIORIETARY) LIMITED, MITSUBISHI MATERIALS CORPORATION
    Inventors: David Machet, Antonio Rodrigues Da Cruz, Vladimir Shoilovich Ziserman, Kenichi Takagi
  • Patent number: 7650964
    Abstract: An arrangement of parts having a first part in the form of sheet metal which is in contact with the second part along an edge and is fixedly connected to the second part via at least one weld. To reduce stress peaks at the ends of welds, the first part has a slot in a section adjacent to the respective end of the weld, the slot beginning at the edge and extending to its end with a curved profile a curve bent by at least 180° up to its end.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: January 26, 2010
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventor: Arnulf Spieth
  • Publication number: 20100015564
    Abstract: A fired heater tube that is resistant to corrosion and fouling is disclosed. The fired heater tube comprises an advantageous high performance coated material composition resistant to corrosion and fouling comprises: (PQR), wherein P is an oxide layer at the surface of (PQR), Q is a coating metal layer interposed between P and R, and R is a base metal layer, wherein P is substantially comprised of alumina, chromia, silica, mullite, spinels, and mixtures thereof, Q comprises Cr, and at least one element selected from the group consisting of Ni, Al, Si, Mn, Fe, Co, B, C, N, P, Ga, Ge, As, In, Sn, Sb, Pb, Sc, La, Y, Ce, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Re, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au and mixtures thereof, and R is selected from the group consisting of low chromium steels, ferritic stainless steels, austenetic stainless steels, duplex stainless steels, Inconel alloys, Incoloy alloys, Fe—Ni based alloys, Ni-based alloys and Co-based alloys.
    Type: Application
    Filed: June 8, 2009
    Publication date: January 21, 2010
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: ChangMin Chun, Narasimha-Rao Venkata Bangaru, Mark A. Greaney, Ian A. Cody, F Pierce Hubbard, David Samuel Deutsch
  • Publication number: 20100003535
    Abstract: The present invention provides high strength thick welded steel pipe for line pipe superior in low temperature toughness, and a method of production of the same. A base material steel plate containing C: 0.010 to 0.050%, Si: 0.01 to 0.50%, Mn: 0.50 to 2.00%, Al: 0.020% or less, Ti: 0.003 to 0.030%, and Mo: 0.10 to 1.50%, having a carbon equivalent Ceq of 0.30 to 0.53, having a crack susceptability parameter Pcm of 0.10 to 0.20, satisfying formula 3, comprised an area ratio of 20% or less of polygonal ferrite and an area ratio of 80% or more of bainite, and having an effective crystal grain size of 20 ?m or less is formed into a pipe shape, then seam welded to make the effective crystal grain size of the heat affected zone 150 ?m or less: 10C+100Al+5Mo+5Ni<3.
    Type: Application
    Filed: December 4, 2007
    Publication date: January 7, 2010
    Inventors: Takuya Hara, Hitoshi Asahi
  • Publication number: 20090297872
    Abstract: In a high-tensile steel plate according to the invention, the carbon equivalent Pcm represented in Expression (1) is from 0.180% to 0.220%, the surface hardness is a Vicker's hardness of 285 or less, the ratio of a Martensite Austenite constituent in the surface layer is not more than 10%, the ratio of a mixed structure of ferrite and bainite inside beyond the surface layer is not less than 90%, the ratio of the bainite in the mixed structure is not less than 10%, the thickness of the lath of bainite is not more than 1 ?m, the length of the lath is not more than 20 ?m, and the segregation ratio as the ratio of the Mn concentration in the center segregation part relative to the Mn concentration at a part in a depth equal to ¼ of the thickness of the plate from the surface is not more than 1.3. Pcm=C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15+V/10+5B . . . (1) where the element symbols in Expression (1) represent the % by mass of the respective elements.
    Type: Application
    Filed: March 8, 2006
    Publication date: December 3, 2009
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventors: Nobuaki Takahashi, Masahiko Hamada, Shuji Okaguchi, Akihiro Yamanaka, Ichirou Seta
  • Publication number: 20090246550
    Abstract: A thin walled tube is disclosed consisting essentially of a precipitation hardenable stainless steel and having a ratio, defined as outer tube circumference C divided by ? times the square of the tube wall thickness w, of 90-350. The thin walled tube is highly suitable for use in sport appliance or furniture where weight and mechanical properties are of high importance.
    Type: Application
    Filed: October 13, 2006
    Publication date: October 1, 2009
    Inventors: Carl-Johan Irander, Goran Berglund
  • Publication number: 20090169912
    Abstract: In one embodiment, a tubular assembly is provided, comprising a first iron based tubular having a first non-cladded inner surface; and a second iron based tubular having a second non-cladded inner surface, wherein the first tubular is connected to the second tubular using a non-iron based bonding material. Preferably, the non-iron based bonding material has a lower crack growth rate than the iron based tubulars.
    Type: Application
    Filed: April 10, 2006
    Publication date: July 2, 2009
    Inventors: Douglas S. Hoyt, Michael S. Weir, Wan C. Kan
  • Patent number: 7551242
    Abstract: There are provided (1) a sintered electrode for a cold cathode tube, comprising a cylindrical side wall part, a bottom part provided at one end of the side wall part, and an opening provided at another end of the side wall part, characterized in that the surface roughness (Sm) of the inner surface of the electrode is not more than 100 ?m, (2) a cold cathode tube characterized by comprising: a hollow tubular light transparent bulb into which a discharge medium has been sealed; a fluorescent material layer provided on the inner wall surface of the tubular light transparent bulb; and a pair of the above sintered electrodes for a cold cathode tube provided respectively on both ends of the tubular light transparent bulb, and (3) a liquid crystal display device characterized by comprising: the above cold cathode tube; a light guide body disposed closely to the cold cathode tube; a reflector disposed on one surface side of the light guide body; and a liquid crystal display panel disposed on another surface side of t
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: June 23, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hitoshi Aoyama
  • Publication number: 20090123775
    Abstract: To form a chromium oxide film on the inner surface of a Cr containing nickel-base alloy tube inexpensively and uniformly, the Cr containing nickel-base alloy tube is heated in atmospheric gas of carbon dioxide gas and non-oxidation gas to form an oxide film consisting of chromium oxide having a thickness of 0.2 to 1.5 ?m on the inner surface of the Cr containing nickel-base alloy tube. The atmospheric gas may contain oxygen gas of 5 vol % or less and/or water vapor of 7.5 vol % or less.
    Type: Application
    Filed: October 10, 2008
    Publication date: May 14, 2009
    Inventors: Manabu Kanzaki, Kazuyuki Kitamura, Noriaki Hirohata
  • Publication number: 20090098403
    Abstract: A low alloy steel is provided for oil country tubular goods with a yield strength between 654 MPa and 757 MPa, and possessing excellent resistance to HIC and SSC in high-pressure hydrogen sulfides environment, and comprising, by mass %: 0.10 to 0.60% C; 0.05 to 0.5% Si; 0.05 to 3.0% Mn; 0.025% or less P; 0.010% or less S; 0.005 to 0.10% Al; 0.01% or less O (oxygen); 3.0% or less Cr; and 3.0% or less Mo, wherein the amount of Cr and Mo content is 1.2% or more, with the balance being Fe and impurities, and the number of nonmetallic inclusions whose major axis is 10 ?m or more is 10 per square millimeter in the inspected cross section. The present invention provides a low alloy steel for oil country tubular goods possessing excellent resistance to sulfide stress cracking, and a seamless steel pipe.
    Type: Application
    Filed: September 16, 2008
    Publication date: April 16, 2009
    Inventors: Tomohiko Omura, Yuji Arai, Kuniaki Tomomatsu, Toshiharu Abe
  • Patent number: 7514122
    Abstract: Thermal spray processing and cold spray processing are utilized to manufacture porous starting materials (such as tube stock, wire and substrate sheets) from biocompatible metals, metal alloys, ceramics and polymers that may be further processed into porous medical devices, such as stents. The spray processes are also used to form porous coatings on consolidated biocompatible medical devices. The porous substrates and coatings may be used as a reservoir to hold a drug or therapeutic agent for elution in the body. The spray-formed porous substrates and coatings may be functionally graded to allow direct control of drug elution without an additional polymer topcoat. The spray processes are also used to apply the drug or agent to the porous substrate or coating when drug or agent is robust enough to withstand the temperatures and velocities of the spray process with minimal degradation.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: April 7, 2009
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventor: Pamela A. Kramer
  • Publication number: 20090068490
    Abstract: A ferritic stainless steel sheet for use in raw material pipes for forming bellows pipes has excellent formability. More specifically, the ferritic stainless steel sheet contains 10% to 25% by mass of Cr and has a yield stress in the range of 300 to 450 MPa and the product of the yield stress and the uniform elongation properties of at least 5200 (MPa·%). Preferably, the ferritic stainless steel sheet for use in raw material pipes for forming bellows pipes has an average crystal grain size D of 35 ?m or less or a surface roughness of 0.40 ?m or less as determined by Ra.
    Type: Application
    Filed: May 29, 2006
    Publication date: March 12, 2009
    Inventors: Yoshihiro Ozaki, Yasushi Kato, Takaaki Iguchi
  • Publication number: 20090032151
    Abstract: A magnesium base alloy pipe having high strength and toughness is provided along with a method of manufacturing such pipes. A magnesium base alloy pipe, wherein the pipe is produced by drawing a pipe blank of a magnesium base alloy comprising containing either of the following ingredients (1) or (2): (1) about 0.1-12.0 mass % of Al; or (2) about 1.0-10.0 mass % of Zn and about 0.1-2.0 mass % of Zr. The novel alloy pipe is manufactured by a method comprising steps of providing the above-described pipe blank, pointing the pipe blank, and drawing the pointed pipe blank. The drawing step is executed at a drawing temperature above approx. 50° C.
    Type: Application
    Filed: September 30, 2008
    Publication date: February 5, 2009
    Applicant: SUMITOMO (SEI) STEEL WIRE CORP.
    Inventors: Yukihiro OISHI, Nozomu Kawabe, Hitoshi Takahashi, Katsumi Wakamatsu
  • Publication number: 20090014082
    Abstract: A rotary swaging method for the tapering of metal tubes is disclosed. The method comprises the use of a rotary swaging machine comprising a die comprising a die taper comprising a length of greater than about 12 inches, a diameter reduction of greater than about 30%, and/or a taper angle of less than about 12 degrees.
    Type: Application
    Filed: June 30, 2008
    Publication date: January 15, 2009
    Inventor: James R. Cannaley
  • Publication number: 20080296006
    Abstract: A pipe-within-a-pipe and method of use are provided. The pipe-within-a-pipe comprises a first tube overlaying a second tube. The first tube and the second tube have different structures in some respect.
    Type: Application
    Filed: May 28, 2008
    Publication date: December 4, 2008
    Applicant: AMERIFAB, INC.
    Inventor: Richard J. Manasek
  • Patent number: 7431317
    Abstract: A bicycle frame part having a disproportionally enlarged end section and a method for making the same. The tube may be used as a bicycle frame part, and it may include a first section having a thickness, a second section configured to be forged from a first shape having a thickness that is different from the thickness of the first section to a second shape having a thickness that is less than the thickness of the first shape. The second shape of the second section may be proportionally enlarged relative to the first shape of the second section.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: October 7, 2008
    Assignee: Giant Manufacturing Co., Ltd.
    Inventor: K. U. Wu
  • Publication number: 20080192176
    Abstract: There are provided (1) a sintered electrode for a cold cathode tube, comprising a cylindrical side wall part, a bottom part provided at one end of the side wall part, and an opening provided at another end of the side wall part, characterized in that the surface roughness (Sm) of the inner surface of the electrode is not more than 100 ?m, (2) a cold cathode tube characterized by comprising: a hollow tubular light transparent bulb into which a discharge medium has been sealed; a fluorescent material layer provided on the inner wall surface of the tubular light transparent bulb; and a pair of the above sintered electrodes for a cold cathode tube provided respectively on both ends of the tubular light transparent bulb, and (3) a liquid crystal display device characterized by comprising: the above cold cathode tube; a light guide body disposed closely to the cold cathode tube; a reflector disposed on one surface side of the light guide body; and a liquid crystal display panel disposed on another surface side of t
    Type: Application
    Filed: May 2, 2005
    Publication date: August 14, 2008
    Inventor: Hitoshi Aoyama
  • Publication number: 20080171217
    Abstract: According to one aspect, an interventional medical device includes a first wire disposed at a distal end and made of an alloy containing Ti and a transition metal other than Ti and Cr, and a second wire disposed at a proximal end of the first wire and made of an alloy containing Cr and a transition metal other than Cr and Ti. The device may include the first wire and the second wire being brazed to each other by a brazing material. The brazing material contains a metal whose ionization tendency is more basic than Ti and Cr. The brazing material is preferably an Ag—Mg alloy or an Ni—Mg alloy, and preferably has a composition near the eutectic point.
    Type: Application
    Filed: September 27, 2007
    Publication date: July 17, 2008
    Inventor: Katsuro Mishima
  • Patent number: 7393597
    Abstract: A weld joint having a base material and a weld metal both of an austenitic steel, wherein the weld metal has a chemical composition, in mass %, that C: 0.04% or less, Si: 1.0% or less, Mn: 3% or less, P: 0.02% or less, S: 0.005% or less, Cr: 15 to 25%, Ni: 30% or more, Mo: 10% or less, Nb: 2.5 to 5%, Al: 3.0% or less, Ti: 0.5% or less, and the balance: Fe and inevitable impurities, the contents of Al and Ti satisfying the following: (Ti+Al)>Nb/8. The weld joint is a high strength austenitic steel weld joint which exhibits excellent toughness at a low temperature and excellent resistance to hydrogen embrittlement, which are required for a piping and a vessel for high pressure hydrogen, particularly also in a welded zone.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: July 1, 2008
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Kazuhiko Ogawa, Masaaki Igarashi, Hiroyuki Semba, Tomohiko Omura, Mitsuo Miyahara
  • Publication number: 20080113209
    Abstract: An exhaust manifold and a method for manufacturing an exhaust manifold that includes a housing part and overlapping corrugated sheet parts having corrugations at an angle of 10 to 60 degrees relative to each other. The method includes the steps of preoxidizing the manifold parts and after the preoxidation step joining the manifold parts simultaneously to each other by resistance welding.
    Type: Application
    Filed: November 26, 2007
    Publication date: May 15, 2008
    Applicant: ECOCAT OY
    Inventors: Reijo Lylykangas, Veli-Matti Vekki, Keijo Keskitalo, Erkki Narhi
  • Publication number: 20080096039
    Abstract: A tubular formation technique utilizing centrifugal casting incorporating a moveable launder system to deliver molten alloy along an extended length within a centrifugal caster to form a hollow tubular precursor of extended length. The technique is adaptable to all alloy systems but may be particularly suited for so called “hard alloys” that are susceptible to substantial work hardening or are difficult to extrude.
    Type: Application
    Filed: September 12, 2007
    Publication date: April 24, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Anil K. Sachdev, K. Balasubramanian
  • Publication number: 20080096038
    Abstract: A method for friction-stir-welding two hollow workpieces. While open end portions of the workpieces butt each other, and an annular support member supports the butt end portions from the inside, the workpieces are joined together by friction stir welding. An annular, radially outward projection is formed on the entire outer circumferential surface of the support member in an intermediate region along the support member width. Support portions to be fitted into corresponding end portions of the workpieces for support from the inside are formed on the support member at corresponding opposite sides of the annular, radially outward projection. While the support portions are fitted into the workpieces, respectively, and end faces of the workpieces abut the annular, radially outward projection, the butt end portions of the workpieces and the support member are friction stir welded from the outside. Thereby, the hollow workpieces are welded without joint defect.
    Type: Application
    Filed: July 29, 2005
    Publication date: April 24, 2008
    Applicant: SHOWA DENKO K.K
    Inventor: Yoshitaka Nagano
  • Publication number: 20080075969
    Abstract: The invention relates to an extrusion billet having two end sides, characterized in that the surface of at least one end side has a three-dimensional topography which is composed of a substantially planar end side face from which local elevations protrude.
    Type: Application
    Filed: July 9, 2007
    Publication date: March 27, 2008
    Inventors: Ali Aydin, Hans-Peter Hoehe, Leszek Poletek, Florian Schopper
  • Publication number: 20080050608
    Abstract: A process for coating a metal part with a magnetron-sputtered material to provide corrosion protection. The process results in a part having a uniform coating. Coating materials include corrosion resistant zinc with various options for appearances and levels or corrosion protection.
    Type: Application
    Filed: August 25, 2006
    Publication date: February 28, 2008
    Inventors: Surry D. McFaul, Frederick G. Grawunde
  • Patent number: 7224369
    Abstract: An image processing apparatus, able to improve the pixel fill rate and able to prevent an increase of memory resources and increase of memory access, provided with a color calculation circuit for performing pixel level processing based on supplied first attribute parameters of the Z and color (R, G, B) data and outputting second attribute parameters and (x, y) coordinate data supplied by a DDA circuit together with the results and a sub primitive generation circuit for expanding a plurality of stamps to a plurality of sub primitives (sub stamps) based on the second attribute parameters of the color calculation circuit, generating expanded coordinates corresponding to the expanded sub stamps based on the (x, y) coordinate data of the DDA circuit, and outputting the same as the drawing parameters after expansion and the expanded graphics drawing coordinates to a memory controller, and a method of the same.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: May 29, 2007
    Assignee: Sony Corporation
    Inventors: Jin Satoh, Hitoshi Ishikawa
  • Patent number: 7052778
    Abstract: A cold forging process and apparatus for reinforcing an end of a rectangular tube, including a close fitting, rectangular upper mandrel that inserts into the tubing. The upper mandrel has flared corners at the end attached to the upper die. As the upper die is moved under pressure towards the lower die, the flared corners of the mandrel makes contact with the inner surface of the tube. This ensures that the tube begins to deform outward before the rest of the upper die contacts it. As the upper die is pressed towards contact with the lower die, the end of the tube is cold formed into a collar. The dies are then moved apart and the cold-formed tube removed. A lower mandrel positions and retains the die during forming. After forming the lower mandrel is used to eject the formed part, which may for instance be a trailer hitch housing.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: May 30, 2006
    Inventor: Eugene Angelo Sorgi
  • Patent number: 6943802
    Abstract: An image processing apparatus, able to improve the pixel fill rate and able to prevent an increase of memory resources and increase of memory access, provided with a color calculation circuit for performing pixel level processing based on supplied first attribute parameters of the Z and color (R, G, B) data and outputting second attribute parameters and (x, y) coordinate data supplied by a DDA circuit together with the results and a sub primitive generation circuit for expanding a plurality of stamps to a plurality of sub primitives (sub stamps) based on the second attribute parameters of the color calculation circuit, generating expanded coordinates corresponding to the expanded sub stamps based on the (x, y) coordinate data of the DDA circuit, and outputting the same as the drawing parameters after expansion and the expanded graphics drawing coordinates to a memory controller, and a method of the same.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: September 13, 2005
    Assignee: Sony Corporation
    Inventors: Jin Satoh, Hitoshi Ishikawa
  • Patent number: 6915821
    Abstract: A small diameter metal tube whose inner surface is smooth and its production method are provided. The metal tube has an inner diameter of up to 1.0 mm and its inner surface has a maximum height difference (Rf) in the surface roughness of up to 3 ?m.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: July 12, 2005
    Assignees: Terumo Kabushiki Kaisha, Okano Kogyo Co., Ltd.
    Inventors: Tetsuya Ooyauchi, Masayuki Okano
  • Patent number: 6913828
    Abstract: Process for making metallic microcylinders from pre-treated diacetylenic lipid tubules which includes placing the tubules into an electroless plating bath containing a metal plating reagent, depositing by electroless plating on the surfaces of the tubules enough of a metal to make the tubules electrically conducting, separating the tubules from the plating bath, treating the tubules to remove the lipid and form the metal microcylinders, washing and drying the microcylinders to produce the metal microcylinders having aspect radio of about 12, weight average length of about 20?, weight average outside diameter of about 1.5?, and weight average wall thickness of about a quarter of one micron.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: July 5, 2005
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Dan Zabetakis
  • Patent number: 6897399
    Abstract: 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 manufacturing has been impossible. A plurality of metal wires is worked into a twisted wire cluster, adjoining companion metal wires are brought into contact in planar contacting portions, and the cluster is made unitary by supplying an adhesive agent along the outer side, producing a hollow metal object possessing a uniform inner diameter and a clean inner surface.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: May 24, 2005
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Akira Tsuda, Masatada Numano, Yoshihiro Nakai, Tsuyoshi Nomura, Takashi Kondo
  • Patent number: 6883552
    Abstract: A small diameter metal tube having at least two inner diameters is provided. A method for producing this metal tube is also provided. In this method, a plate member having a development shape of the metal tube is blanked from a metal thin plate so that the plate member is left partly tied to the metal thin plate, the plate member is press formed into a tubular body having the at least two inner diameters, and the plate member partly tied to the metal thin plate is cut apart to produce the metal tube having at least two inner diameters.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: April 26, 2005
    Assignees: Terumo Kabushiki Kaisha, Okano Kogyo Co., Ltd.
    Inventors: Tetsuya Ooyauchi, Masayuki Okano
  • Patent number: 6881494
    Abstract: A process for forming an initial section or like component featuring a hollow interior to a final shape by high internal pressure in the sealed hollow interior using a medium that can flow. In order to shape-form the initial section featuring at least one corner region—preferably at least two corner regions—the wall sections adjacent to the corner region are preshaped in a curved manner—as viewed in cross-section—counter to the direction of applied pressure, and subsequently re-shaped by applying the high internal pressure of the medium that can flow, displacing the corner region in the direction in which the pressure is applied. To that end a section with hollow space delimited by section walls is employed in which two section walls define each corner region of the section cross-section, whereby at least one of the section walls at the corner region features a region that is curved in cross-section.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: April 19, 2005
    Assignee: Alcan Technolgy & Management Ltd.
    Inventors: Markus Gehrig, Christian Leppin, Pius Schwellinger
  • Patent number: 6872463
    Abstract: 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) comprising an open-section distal portion (14) and a proximal portion (16) which connects the said distal portion (14) to the median portion (10).
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: March 29, 2005
    Inventor: Pietro Passone
  • Patent number: 6851455
    Abstract: 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 coefficient of 0.49 or less. The ferritic stainless steel has Lankford value of 1.2 or more with elongation of 30% or more by a uniaxial tensile test.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: February 8, 2005
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Masato Otsuka, Hanji Ishikawa, Satoshi Suzuki, Toshiro Adachi
  • Patent number: 6821640
    Abstract: A method for producing a bent extruded profile that includes extruding a first profile bar having a first lateral formation, extruding a second profile bar having a second lateral formation corresponding in a form-fitting manner to the first lateral formation, and inserting the first lateral formation into the second lateral formation so as to connect the first and second profile bars and to create a form-fitting connection restricting relative movement between the first and second profile bars in all directions except a longitudinal direction of the profile bars. The method also includes bending the connected first and second profile bars using a bending process, wherein after bending, the form-fitting connection restricts relative movement between the first and second profile bars in all directions. In addition, an extruded profile including a first profile bar having a first formation on a first longitudinal side and a second profile bar having a second formation on a second longitudinal side.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: November 23, 2004
    Assignee: Edscha Cabrio-Dachsysteme GmbH
    Inventors: Heinz Wüllrich, Franz Haberl, Michael Rauscher
  • Patent number: 6820317
    Abstract: In a method of fabricating a bellows by bulge forming, an annealing step is carried out during the bulge forming process of the bellows so that the capability of the material to elongate is recovered, and the workability of the bellows is improved in effect. In particular, the ratio of the outer diameter to the inner diameter can be made greater than a value that can be achieved by a single forming step. Therefore, the deflection (stroke) of each annular bulge or pleat can be increased for a given stress or the number of annular bulges and the length of the bellows can be decreased for a given stroke of the bellows.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: November 23, 2004
    Assignee: NHK Spring Co., Ltd.
    Inventor: Hideki Okada
  • Patent number: 6790536
    Abstract: A sheet metal profile support (10) for automotive construction, such as a cross member, rocker panel, or frame support is disclosed, with a U-shaped, parabolic, or horseshoe-shaped profile cross section (12), in which, in at least one section (14) of the two legs (16, 18) of the profile, a first and second sheet metal layer (20, 22) rest flush against each other as a sheet doubling and in the region of the free ends of the legs (16, 18), the sheet metal layers (20, 22) are connected to each other in one piece by means of a beaded edge (32) that has a hollow chamber (34).
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: September 14, 2004
    Assignee: Linde &plus; Pullman AG
    Inventors: Gerhard Schönleber, Alexander Dollischek
  • Patent number: 6767650
    Abstract: A lightweight support for a bumper is formed by an extruded profile with a plurality of chambers. In order to provide a profile which, along with an extremely low weight, meets all the static requirements, is easy to bend and is suited to the properties of a light-metal alloy, the profile (1) comprises four walls (2, 3, 5, 6), which preferably form an isosceles trapezoid, and two webs (7, 8), which are arranged in the interior of the profile, parallel to the side walls (5, 6) and likewise symmetrically. The side walls (5, 6) of the support (1) have stiffening ribs (25) which are produced in the same operation as the support (1) is bent. A description is given of the associated process.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: July 27, 2004
    Assignee: Magna Steyr Fahrzeugtechnik AG & Co. KG
    Inventors: Klaus Hausberger, Guntram Ruef, Bruno Götzinger, Thomas Friesenbichler
  • Patent number: 6748786
    Abstract: A metal tubular body of small diameter having a varying wall thickness is provided. The tubular body has a minimum inner diameter of up to 2 mm and a maximum wall thickness of up to 0.5 mm, and the wall thickness varies along its longitudinal axis.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: June 15, 2004
    Assignees: Terumo Kabushiki Kaisha, Okano Kogyo Co., Ltd.
    Inventors: Tetsuya Ooyauchi, Masayuki Okano
  • Publication number: 20040023059
    Abstract: An entry board (1) for use in drilling small holes in boards. A lubricant layer (4) of a mixture of a polyethylene glycol having an average molecular weight of at least 3000 to less than 10000, a polyethylene glycol having an average molecular weight of at least 10000 and trimethylolpropane is formed over at least one surface of an aluminum base board (2), with an undercoat layer (3) of a partially saponified product of polyvinyl acetate provided between the layer and the base board. The partially saponified product of polyvinyl acetate is 15 to 70 mole % in the degree of saponification and 9000 to 50000 in average molecular weight. The entry board (1) is excellent in the adhesion of the lubricant layer (4) to the base board (2), and the lubricant layer (4) is prevented from cracking.
    Type: Application
    Filed: March 13, 2003
    Publication date: February 5, 2004
    Inventors: Shingo Kaburagi, Yoshikazu Uda, Susumu Takada, Hideo Kawai
  • Patent number: 6655415
    Abstract: A continuous, seamless, copper tube having a mass in excess of 500 kilograms formed by an extrusion process and at an extrusion temperature of approximately 750 degrees Celsius.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: December 2, 2003
    Assignee: BWE Limited
    Inventors: John Dawson, Daniel John Hawkes, Phillip A. Jones, Stephen James Laidlow
  • Publication number: 20030207143
    Abstract: A shock absorbing material comprising an Al—Mg—Si series aluminum alloy having high strength and showing excellent energy absorbing property when compressed in the axial direction of extrusion is obtained. The shock absorbing material of the invention has a hollow cross section, mainly comprises a fibrous structure and can be manufactured by press quenching just after extrusion followed by aging. In the press quenching, press quenching under air-cooling advantageous in view of the dimensional accuracy or the cost can be adopted. Further, the shock absorbing material of the invention has excellent cracking resistance to a compressive load in the lateral direction as well as in the axial direction. The shock absorbing material of the invention is suitable as side members or bumper stays in the frame structures of automobiles.
    Type: Application
    Filed: April 23, 2003
    Publication date: November 6, 2003
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd)
    Inventors: Hitoshi Kawai, Shinji Yoshihara, Masakazu Hirano
  • Publication number: 20030180568
    Abstract: 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 manufacturing has been impossible. A plurality of metal wires is worked into a twisted wire cluster, adjoining companion metal wires are brought into contact in planar contacting portions, and the cluster is made unitary by supplying an adhesive means along the outer side, producing a hollow metal object possessing a uniform inner diameter and a clean inner surface.
    Type: Application
    Filed: March 4, 2003
    Publication date: September 25, 2003
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Akira Tsuda, Masatada Numano, Yoshihiro Nakai, Tsuyoshi Nomura, Takashi Kondo
  • Publication number: 20030008165
    Abstract: A shock absorbing material comprising an Al—Mg—Si series aluminum alloy having high strength and showing excellent energy absorbing property when compressed in the axial direction of extrusion is obtained. The shock absorbing material of the invention has a hollow cross section, mainly comprises a fibrous structure and can be manufactured by press quenching just after extrusion followed by aging. In the press quenching, press quenching under air-cooling advantageous in view of the dimensional accuracy or the cost can be adopted. Further, the shock absorbing material of the invention has excellent cracking resistance to a compressive load in the lateral direction as well as in the axial direction. The shock absorbing material of the invention is suitable as side members or bumper stays in the frame structures of automobiles.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 9, 2003
    Applicant: KABUSHI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Hitoshi Kawai, Shinji Yoshihara, Masakazu Hirano
  • Patent number: 6495268
    Abstract: A method of corrosion protecting a tube having an end portion extending into a tube receiving hole of a mud drum of a boiler and the tube produced by that method. The end portion of the tube is provided with a corrosion resistant cladding layer which may contain chromium. Laser cladding is used to produce the corrosion resistant cladding layer, which advantageously tapers along a length of the end portion of the tube. The tube may be swaged before or after the cladding is applied and suitable heat treatments may be performed on the bare or clad tube to develop suitable properties in the tube, the cladding, or a tube-cladding interface.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: December 17, 2002
    Assignee: The Babcock & Wilcox Company
    Inventor: George H. Harth, III
  • Patent number: 6479152
    Abstract: Lubricative stainless steel sheet and pipe having a chromate film on at least one of the surfaces of a stainless steel sheet or pipe substrate, the chromate film having an amount of adhered Cr of 5 to 100 mg/m2, and, on the chromate film, a lubricant film obtained by applying, on the chromate film, a water-base coating containing (a) a urethane resin of ether-ester type having a skeleton of bisphenol type, a skeleton of ester, and a carboxyl group, (b) an epoxy resin, and (c) a polyolefin wax, and baking the applied coating, the sum of the amount of the urethane resin of (a) and the epoxy resin of (b) being 70 to 95% by weight of the total solids of the coating, the amount of the polyolefin wax of (c) being 5 to 30% by weight of the total solids of the coating, and the lubricant film having a thickness of 0.5 to 5 micrometers and a Vickers hardness of at least 15. A method of producing a lubricative stainless steel pipe is also disclosed.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: November 12, 2002
    Assignee: Nippon Steel Corporation
    Inventors: Yujiro Miyauchi, Itsuro Hiroshige, Isao Anai, Katsuhiko Kato, Toshio Tanoue
  • Publication number: 20020121310
    Abstract: A continuous, seamless, copper tube having a mass in excess of 500 kilograms formed by an extrusion process and at an extrusion temperature of approximately 750 degrees Celsius.
    Type: Application
    Filed: March 4, 2002
    Publication date: September 5, 2002
    Inventors: John Dawson, Daniel John Hawkes, Phillip A. Jones, Stephen James Laidlow
  • Patent number: 6391470
    Abstract: In a method for manufacturing a crossmember for stiffening an instrument panel of a motor vehicle, the crossmember that is to be manufactured having at least two profiled segments, with cross sections differing from one another, arranged in axial prolongation, the smaller-cross-section profiled segment is arranged so as to overlap the larger-cross-section profiled segment over at least a partial length; and in the overlap region, the profiled segments are joined to one another in at least one direction perpendicular to the longitudinal direction by way of at least one stabilizing joining element.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: May 21, 2002
    Assignee: Progress-Werk Oberkirch AG
    Inventors: Hansjörg Schmieder, Hans Merkle