During Longitudinal Movement Of Work Patents (Class 72/52)
  • Patent number: 9498840
    Abstract: A welding structural part 1 is manufactured by overlapping the surfaces of steel sheets 2, and forming a weld zone by spot welding. The weld zone 3 includes: a weld nugget 4; and a heat affected zone 5 surrounding the weld nugget 4, wherein the hardness in the weld zone increases along an exterior region 6 of the heat affected zone 5 toward the heat affected zone 5, and then decreases along the heat affected zone 5 toward the central region of the weld nugget 4. In the boundary region between the weld nugget 4 and the heat affected zone 5, the weld nugget 4 may have a convex portion 4A bulging into the heat affected zone 5 along the overlapped portion. The steel sheets 2 contain carbon in 0.15 mass % or more.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: November 22, 2016
    Assignees: NETUREN CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Takahiko Kanai, Munehisa Hatta, Fumiaki Ikuta, Kazuhiro Kawasaki, Eizaburou Nakanishi, Masayuki Miyake, Kotobu Nagai, Masao Hayakawa, Takehiko Itagaki
  • Patent number: 8931323
    Abstract: Multi-layered pipes, machines for forming multi-layered pipes, and methods of forming multi-layered pipes, such as for use in the hydrocarbon industry as may form high-pressure pipelines including forming an inner metal tube from a first metal stock, and while forming the inner metal tube, forming at least a second metal tube around the inner tube from at least a second metal stock. In some methods, sheet metal is bent to form tubes having seams, which are welded while the tubes are being formed. Some methods are performed proximate to an installation site for the multi-layered pipe, such as a hydrocarbon extraction or transportation site. Some methods are performed on a vehicle and proximate to an installation site.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: January 13, 2015
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Robert D. Kaminsky
  • Patent number: 8853596
    Abstract: A machine-plate manufacturing device 30 includes a cylinder section 32 having an outer circumferential portion. A groove into which an engagement portion of the sheet is removably inserted is formed in the outer circumferential portion of the cylinder section 32. On the inner side of the outer circumferential portion of the cylinder section 32, magnetic attraction members 51 formed of a magnetic material are provided, and permanent magnets 53 are provided in such a manner that their orientation can be switched. Permanent-magnet switching means is provided to switch the orientation of the permanent magnets 53 between a magnetization position for magnetizing the magnetic attraction members 51 and a demagnetization position for demagnetizing the magnetic attraction members 51.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: October 7, 2014
    Inventor: Masayuki Izume
  • Patent number: 8829384
    Abstract: A guiding and shaping system for producing welded pipes made from metallic strip material. The guiding and shaping system comprises several pairs of rolls that are disposed one behind another in the direction of travel of the workpiece and are used for increasingly cold-working and bending the edges of the workpiece as the workpiece advances. First pairs of rolls grip the top side and bottom side of the workpiece while pairs of rolls that grip the external faces of the bent edges and form the shape of a pipe are provided in the region where the bent edges form undercuts. The guiding and shaping system further comprises a welding device. The workpiece is supported by floatingly mounted lateral rolls until cooling off following the welding process.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: September 9, 2014
    Assignee: Wuppermann Edelstahltechnik GmbH
    Inventor: Manfred Hartmann
  • Publication number: 20140238095
    Abstract: A method and an installation for continuously shaping longitudinally slotted pipes (10) from a flat material minimizes or avoids markings in the material if the rolling forces of at least two rolls (40) acting successively on the flat material are evenly introduced into the roll stand and/or freely adjusts the two successively acting rolls (40) relative to one another.
    Type: Application
    Filed: October 5, 2012
    Publication date: August 28, 2014
    Applicant: SMS Meer GmbH
    Inventor: Axel Rossbach
  • Patent number: 8464569
    Abstract: An internal tool for bending a strip passing in a strip-travel direction into a tube has a support juxtaposable with a face of the passing strip, at least two roller holders pivotal on the support about respective offset holder pivot axes generally parallel to the strip-travel direction, and respective rollers carried in the holders and rotatable about respective roller axes generally perpendicular to the respective holder axes.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: June 18, 2013
    Assignee: SMS MEER GmbH
    Inventors: Bernhard Heimann, Johannes Kamps
  • Patent number: 8312629
    Abstract: In a method of making a tubular support bar for a dashboard support, a sheet metal blank is placed in a first forming tool and pressed in a first shaping step by a ram into a U-shaped cavity of a first bottom die to form a U-shaped member. While remaining in the first bottom die, the U-shaped member is provided with connecting elements in the form of weld nuts by a automated placement device. Subsequently, the U-shaped member is transferred to a second forming tool and undergoes a second shaping step between a top die and a second bottom die to form a slotted tube. The longitudinal edges of the slotted tube are then joined together to form the support bar.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: November 20, 2012
    Assignee: Benteler Automobiltechnik GmbH
    Inventors: Andreas Hitz, Hans-Jürgen Knaup
  • Patent number: 8256255
    Abstract: A finishing station of variable structure includes two plates, joined integrally to each other and able to slide along two vertical shoulders which support a plurality of forming rollers mounted on shoes able to slide in radial guides formed in the plates. The shoes that support the forming rollers are moved by levers hinged to the plates and connected to each other by connecting rods, two of which are hinged to levers hinged to the plates and secured to the ground. A further forming roller, situated in the lower part of the plates, is preferably secured to the ground. In the inner part of the two forming rollers situated in the upper part of the finishing station a disc blade is formed to control the position of the edges of the bent strip of sheet metal during the finishing operation.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: September 4, 2012
    Assignee: Olimpia 80 S.r.l.
    Inventors: Riccardo Bosoni, Vittorio Travini
  • Patent number: 8100312
    Abstract: A machine for continuously forming square tubes includes, in sequence, forming stations suitable for progressively bending a sheet strip, at least one finishing station suitable for further approaching the edges of the bent sheet strip for the final welding and at least one station for closing the square tube. In a forming station, the axes of rotation of the lower rolls of each pair of forming rolls are horizontal and aligned to each other. Each finishing station includes an idle forming roll placed below the square tube being formed; two idle forming rolls, placed at the sides of the square tube being formed, performing movements in opposite directions, parallel to the plane of the sheet strip and two idle forming rolls placed above the square tube being formed, performing movements orthogonal to the plane of the sheet strip.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: January 24, 2012
    Assignee: Olimpia 80 S.r.l.
    Inventors: Vittorio Travini, Livio Travini
  • Patent number: 7699943
    Abstract: The present invention intends to provide a method for manufacturing a high-strength spring, which is capable of generating a higher level of compressive residual stress than that given by conventional methods. This object is achieved as follows: After the final heating process, such as the tempering (in the case of a heat-treated spring) or removing-strain annealing (in the case of a cold-formed spring), a shot peening process is performed on the spring while the surface temperature of the spring is within the range from 265 to 340° C. (preferably from 300 to 340° C.). Subsequently, the spring is rapidly cooled. Preferably, a prestressing process is performed before the shot peening process, or after the shot peening process and before the rapid cooling process. The rapid cooling process may be either a water-cooling process or an oil-cooling process. A forced-air cooling process may be used if the wire diameter of the spring is small.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: April 20, 2010
    Assignee: Chuo Hatsujo Kabushiki Kaisha
    Inventors: Tomohiro Nakano, Takayuki Sakakibara, Masami Wakita
  • Patent number: 7523554
    Abstract: A method of manufacturing a wheel rim by bringing end faces of a workpiece into abutment against each other to form a hollow cylindrical body and forming a circumferential recess which is depressed from an outer circumferential wall of said hollow cylindrical body toward an inner circumferential wall thereof, including providing protrusions disposed near ends of a joined area of the hollow cylindrical body and extending in a joining direction, and then pressing the outer circumferential wall of the hollow cylindrical body to form the recess.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: April 28, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shizuo Kimura, Kenzo Takeda, Ikuo Kato, Yukio Uchiyama, Tadashi Goto, Nobuyuki Kakiya, Kiyoshi Satou, Naotake Marui, Shinichi Ohnaka, Tatsuo Yamanaka, Jin Fukuda, Taisei Wakisaka, Haruo Machida
  • Publication number: 20080163660
    Abstract: A bending press for making tubing from a substantially planar and longitudinally extending metal sheet has a support extending transversely generally parallel to the sheet vertically offset from the sheet, and a bender at one of the edges of the sheet and slidable transversely generally parallel to the sheet on the support. The bender has a pair of bending tools, a tie rod extending transversely in the direction adjacent the pair of tools, and an actuator braced transversely in the direction between the tie rod and the tools and extensible in the direction to tension the rod and press the tools against opposite faces of the sheets at the one edge to deform the one edge. A clamp is engageable between the bender and the support for releasably locking the bender to the support at any of a plurality of positions offset transversely therealong generally parallel to the sheet.
    Type: Application
    Filed: January 3, 2008
    Publication date: July 10, 2008
    Inventors: Manfred Kolbe, Uwe Feldmann, Frank Viegen, Karl Bohmer
  • Patent number: 7231792
    Abstract: A method and device for manufacturing UOE steel pipes, wherein, when an opening width of the U-can obtained by U-ing press is larger than the die-diameter in an O-press of later step, while said opening is narrowed from the front end by the closing rolls disposed before said O-press and/or at least at the entrance portion of the O-press to be smaller than the die-diameter of said O-press, the U-can is simultaneously conveyed into the O-press, and then, after charging into the O-press, undergoes O-ing press to yield an O-can. The device is preferably configured to have the closing rolls disposed in a roll stand and consisted of multiple pairs, to have a mechanism to prevent the U-can from moving upward during narrowing the opening width, and to have the function of conveying the U-can. Thus, UOE steel pipes for high-strength application corresponding to X80 grade can be efficiently manufactured.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: June 19, 2007
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Hidenori Shitamoto, Tetsuya Fukuba, Yoshimasa Matsumoto
  • Patent number: 6840571
    Abstract: The modular grill for vehicles such as trucks includes an elongated screen of generally rectangular configuration, with the longest dimension extending horizontally and with the screen having inner and outer surfaces. A plurality of vertically spaced elongated tubular bars are provided which extend horizontally across the screen in surface-to-surface contact with the outer surface of the screen. A plurality of vertically spaced straps are provided, one for each tubular bar, with the straps being in surface-to-surface contact with the inner surface of the screen. Fastening means extend through the straps, screen and tubular bars for retaining the bars on the screen. A roll forming method is disclosed for making the tubular bar with an integral rolled locking system which extends the entire length thereof and holds the bar in tension. The bar is preferably sweep along its longitudinal axis to create a curvature consistent with modern automotive designs.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: January 11, 2005
    Assignee: Trim Trends Co, Inc.
    Inventor: Donald G. Graber
  • Patent number: 6705143
    Abstract: A method of manufacturing loading plane border frame tubes for chairs utilizes continuous roll-forming processes to roll a base material to form loading plane border frame tubes for use on chairs. The processes include: transport a steel sheet to a roller leveler for flattening; then roll the steel sheet through a first roller calender, a second roller calender, a third roller calender, and a fourth roller calender to form a semi-finished tube; send the semi-finished tube to a high frequency generator for welding and soldering at high temperature; trim the semi-finished tube in a trimming machine; and roll the semi-finished tube through a fifth roller calender to form a finished tube of a selected shape for making border frames of loading planes of the chairs.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: March 16, 2004
    Inventor: Lausan Chung-Hsin Liu
  • Patent number: 6629632
    Abstract: An apparatus and method for welding a shaft having an open seam defined between opposed longitudinal edges. The method comprising passing the shaft along its longitudinal axis through an array of pressure rollers which contact the surface of the shaft at a plurality of discrete points and compress the shaft by applying inwardly directed radial forces to the shaft. An electrical resistance welding assembly welds the seam while closed by the pressure rollers.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: October 7, 2003
    Assignee: IUSRD (Ireland) Limited
    Inventors: Robert G. J. Jack, Geoffrey Brook
  • Patent number: 6425279
    Abstract: The method includes making a fluid communication channel (44), which has a selectively variable cross-sectional area profile, in the inner face of a gas spring cylinder (32) so as to permit fluid communication at different selective rates bypassing around or across the piston assembly (68) of the gas spring (52)as the piston assembly (68) moves within the cylinder (32). Preferably the cross-sectional area profile of the fluid communication channel (44) is initially substantially the same throughout the length of the channel(44) and is thereafter selectively changed in certain portions of the channel (44) so as to restrict and in some instances block gas or fluid flow through the fluid communication channel (44).
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: July 30, 2002
    Assignee: AVM, Inc.
    Inventor: Mark S. Jeffries
  • Patent number: 6351978
    Abstract: A roller mounting arrangement for a machine in which elongated material is shaped by rollers as the material progresses along a pathway. The rollers are mounted so that they are free to pivot and distribute forming pressure over a wider area of the material being shaped. The rollers have freedom to pivot about a plurality of axes. In a tandem mounting arrangement, the rollers have 3-axis freedom.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: March 5, 2002
    Assignee: Kusakabe Electric & Machinery Co.
    Inventors: Yukio Kusakabe, Kazuo Omura, Hirokazu Mori
  • Patent number: 6223575
    Abstract: A tube forming machine for making a tube from a sheet is disclosed. The forming rolls of this invention include various V-shaped rolls at least some of which are used as part of a three-point bending technique. The three-point bending technique entails the use of a V-shaped bottom roll and a narrow top roll. The sheet is shaped running the sheet through a gap between the narrow top roll and the V-shaped bottom roll. The technique allows a wide variety of tubing to be made from the same set of forming rolls, because the curvature obtained in a sheet can be varied by opening or closing the gap. A V-shaped forming roll disclosed herein is also used at a pinch roll stand with a second complementary V-shaped roll. The pinch roll stand of this invention creates an initial V-shaped sheet which facilitates the threading of the sheet at the start of a forming operation. Brimmed rolls are also disclosed.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: May 1, 2001
    Assignee: Kusakabe Electric & Machinery Co., Ltd.
    Inventors: Yukio Kusakabe, Kazuo Omura, Hirokazu Mori
  • Patent number: 6216511
    Abstract: A method and apparatus for smoothing a thick walled portion of a steel pipe produced by pressure-welding two opposite longitudinal edges of an open pipe with a squeeze roll after being subjected to induction heating. Outer and inner reduction rollers pressure sandwiches the thick walled portion from the outer and inner surfaces of the pipe, a support supports the inner reduction roller to be rotatable and containing a water passage for cooling water, a connecting rod connects the support device to a coupler and contains a further water passage for feeding cooling water to the water passage, and an anchor holds the connecting rod. In the a method of producing steel pipes two opposite longitudinal edges of the open pipe are preformed before being subjected to the induction heating and thereafter a thick walled portion is smoothed by the above-described apparatus.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: April 17, 2001
    Assignee: Kawasaki Steel Corporation
    Inventors: Toshio Ohnishi, Masahiro Kagawa, Yoshnori Sugie, Koji Sugano, Nobuki Tanaka, Kingo Sawada, Masao Shoji, Takaaki Toyooka, Yuji Hashimoto, Motoaki Itadani, Akira Yorifuji, Masanori Nishimori
  • Patent number: 6216940
    Abstract: A forming stand for continuously forming a skelp material into a pipe, by pressure of spaced-apart forming rolls supported by spaced upper and lower shafts, the forming rolls having two portions, with one portion fixedly fitted on one side of its shaft, a sleeve slidably fitted to the other end of the shaft and fixedly secured to the sleeve and slidable with respect to the shaft; a bearing box for supporting one side of the associated shaft; a bearing box supporting the other side of the associated shaft through the sleeve; upper and lower stand supporting frames for supporting both of the bearing boxes to be movable in an axial direction; and supporting columns for supporting the stand supporting frames; the pipe-forming force is continuously measured and the forming operation is adjusted such that the measured value of pipe-forming force does not exceed a predetermined pipe-forming upper limit.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: April 17, 2001
    Assignees: Kawasaki Steel Corporation, Kusakabe Electric & Machinery Co., Ltd., both of
    Inventors: Koji Sugano, Masahiro Kagawa, Toshio Ohnishi, Kingo Sawada, Yoshinori Sugie, Nobuki Tanaka, Takaaki Toyooka, Motoaki Itadani, Yuji Hashimoto, Ryoji Kusakabe, Kazuo Omura
  • Patent number: 6212925
    Abstract: It is an object of the present invention to provide a novel roll-forming method for steel pipes and equipment for same with which (1) the evidence that forming work in the FF forming method is mainly carried out at the cluster forming portion showing the poor formability is modified and improved without any deteriorating the advantage of the common-utilization of rolls in the FF forming method which employs basically the circular-bend method, and (2) the forming function at the breakdown forming portion is enhanced. Accordingly, the pinch-point formed by the upper and lower rolls is set at a boundary area between the target forming zone in the material's width direction and previously-formed zone or un-formed zone.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: April 10, 2001
    Assignee: Nakata Manufacturing Co., Ltd.
    Inventors: Feizhou Wang, Atsumu Okamoto
  • Patent number: 6131431
    Abstract: There is disclosed a pipe member rolled up as a coil and roll-formed, the pipe member made of material having a spring-back characteristics and having a specific residual stress distribution existing along a direction perpendicular to the rolling-up direction of said pipe member, the specific residual stress distribution being formed by being wounded around a longitudinal direction thereof by roll-forming, and when the member is unfurled out, two longitudinal edge portions of the member being overlapped to each other thus forming a pipe shape.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: October 17, 2000
    Assignee: Takushoku University
    Inventor: Hiroshi Ona
  • Patent number: 6041632
    Abstract: A forming stand for continuously forming a skelp material into a pipe, by pressure of spaced-apart forming rolls supported by spaced upper and lower shafts, the forming rolls having two portions, with one portion fixedly fitted on one side of its shaft, a sleeve slidably fitted to the other end of the shaft and fixedly secured to the sleeve and slidable with respect to the shaft; a bearing box for supporting one side of the associated shaft; a bearing box supporting the other side of the associated shaft through the sleeve; upper and lower stand supporting frames for supporting both of the bearing boxes to be movable in an axial direction; and supporting columns for supporting the stand supporting frames; the pipe-forming force is continuously measured and the forming operation is adjusted such that the measured value of pipe-forming force does not exceed a predetermined pipe-forming upper limit.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: March 28, 2000
    Assignees: Kawasaki Steel Corporation, Kusakabe Electric & Machinery Co., Ltd.
    Inventors: Koji Sugano, Masahiro Kagawa, Toshio Ohnishi, Kingo Sawada, Yoshinori Sugie, Nobuki Tanaka, Takaaki Toyooka, Motoaki Itadani, Yuji Hashimoto, Ryoji Kusakabe, Kazuo Omura
  • Patent number: 5943892
    Abstract: Electro-unite tubes having different plate thicknesses or different diameters are breakdown-formed without changing the upper rolls and the lower rolls of the breakdown pass rolls each time. Each of breakdown pass rolls 12 includes an upper roll 12a having a convex curved surface and a lower roll 12b opposed to the upper roll 12a, the lower roll 12b being provided with a V-shaped concave portion 13. A gap is maintained between a metal band plate 11 and the deepest portion D in the concave portion 13, and the metal band plate 11 is in local contact with the lower roll 12b. The upper roll 12a can be moved up and down, and the distance between the end of the curved surface of the upper roll 12a and the deepest portion D in the concave portion 13 is adjusted depending upon the plate thickness and the diameter of the electro-unite tube to determine the curvature (R.sub.1 or R.sub.2) for forming the metal band plate 11.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: August 31, 1999
    Assignee: Sanyo Seiki Co., Ltd.
    Inventors: Kiyomasa Hoshi, Kenichi Harano
  • Patent number: 5878614
    Abstract: In the fin pass forming apparatus, the fin roller is split in two symmetrically with respect to the center line of the flow direction of a steel pipe to be formed, and a plurality of side rollers are arranged on a section perpendicular to the flow direction of the steel pipe. At least one fin roller stand is mixed in a group of roller stands including a cluster mill composed of a lower roller and a plurality of pairs of side rollers. The fin roller arranged in the cluster mill is split in two, one is a roller on the work side and the other is a roller on the drive side. The split fin rollers come into contact with a steel pipe to be formed at arbitrary positions in arbitrary directions in the circumferential direction of the steel pipe to be formed so as to conduct a fin pass formation. The plurality of fin pass forming rollers are arranged on a section different from the flow direction of the steel pipe to be formed.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: March 9, 1999
    Assignee: Nakata Manufacturing Co., Ltd.
    Inventor: Atsumu Okamoto
  • Patent number: 5875668
    Abstract: According to the present invention, a roll forming method includes a first roll forming process for forming a trapezoidal projecting portion at a center portion, a second roll forming process for gradually narrowing an upper side of the trapezoidal projecting portion to form a turnup projecting portion, a third roll forming process for forming perpendicularly folded portions at both sides, and a fourth roll forming process for folding a middle portion between the perpendicularly folded portion and the turnup projecting portion in a semi-circular shape. In this way, it is possible to form a turnup projecting portion, insides of which are closely contacted to each other with a curvature which is larger than the conventional curvature, with high speed.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: March 2, 1999
    Assignee: Denso Corporation
    Inventors: Hisashi Kobayashi, Yuji Ogawa, Yosimitu Yamaguchi, Yasuo Abe
  • Patent number: 5865053
    Abstract: A transition forming unit for a tube mill is provided for forming a strip into a generally annular shaped cross-sectional configuration. The forming process is performed by a plurality of roll assemblies mounted on at least a pair of spaced longitudinally extending beams, one disposed on each side of the longitudinal axis of the forming unit. The beams are mounted to rotate about their longitudinal axis and are horizontally and vertically adjustable.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: February 2, 1999
    Assignee: Abbey Etna Machine Company
    Inventors: Nelson D. Abbey, III, John M. Seminew, Susan J. Taber
  • Patent number: 5862694
    Abstract: An improved forming station and process for use in tapered tube manufacturing apparatus and process where fully synchronized output motion of multiple slave axes on adjustable rolls are scaled to the external process input of the master axis so as to generate continuously moving output process position synchronized to the asynchronous process input.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: January 26, 1999
    Assignee: Union Metal Corporation
    Inventor: Vincent R. Horning
  • Patent number: 5845526
    Abstract: A method for continuously producing pipes, each having a polygon-shaped closed cross-section taken perpendicularly to the feeding direction of a strip of metal, which are free from brittleness caused by metal fatigue, and have good precision. A feed-bending method of successively feeding a strip of metal (work) W between a main die body, mandrel, punch and correction punches by predetermined feed lengths, and pressing the work W with these members synchroously with feeding is performed. The work W is gradually bent along designed ridgelines L1 through L2 extending in the feeding direction and defining ridgelines L5 through L8 of a product pipe W1, from the ridgelines L1 and L2 close to widthwise ends e1 and e2 to the ridgelines L3 and L4 in the widthwise center thereof in the course between the vicinity of an inlet and the vicinity of a middle of a device, and then, a resulting rough pipe W0 is corrected from the inside and outside thereof in the vicinity of an outlet of the device.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: December 8, 1998
    Assignees: Toyota Jidosha Kabushiki Kaisha, Amino Corporation
    Inventors: Yoshiaki Kadoma, Iwao Nihashi, Hideo Ogawa, Hiroyuki Amino, Youji Suzuki
  • Patent number: 5802903
    Abstract: According to the present invention, angled steel pipes manufactured by cold forming can be manufactured into such angled steel pipes that are soft and highly stretchable over the entire sections thereof, almost free from residual stresses, and have high buckling strength, excellent secondary weldability and sufficient toughness by way of hot draw forming the pipes with an angled steel pipe forming mill.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: September 8, 1998
    Assignee: Nakajima Steel Pipe Co., Ltd
    Inventor: Norio Nakajima
  • Patent number: 5784911
    Abstract: An apparatus for manufacturing a welded pipe. The apparatus includes a cage or cluster roller molding system. In either case, a rotary axis of each roller is slanted counterclockwise or clockwise with respect to a manufacturing line direction of the apparatus. The adjustable positioning of the rotary axis reduces vertical slip caused when the strip of material passes along the contact surface of the roller.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: July 28, 1998
    Assignees: Kusakabe Electric & Machinery Co., Ltd., Kawasaki Steel Corporation
    Inventors: Yuji Hashimoto, Takaaki Toyooka, Motoaki Itatani, Susumu Itatani, Tsutomu Ide
  • Patent number: 5673579
    Abstract: In welded pipe manufacturing a steel strip is fed and bent by forming rolls into a pipe. A load detector is provided for a roll rotary shaft of each forming roll; a forming roll inclination adjustment device inclines the roll rotary shaft. The roll shaft load is measured to cause inclining of the rotary shaft counterclockwise or clockwise on a plane formed by the rotational axis of the forming roll and the advancing direction of the steel strip.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: October 7, 1997
    Assignees: Kawasaki Steel Corporation, Kusakabe Electric & Machinery Co., Ltd.
    Inventors: Yuuji Hashimoto, Takaaki Toyooka, Motoaki Itadani, Susumu Itadani, Tsutomu Ide
  • Patent number: 5647241
    Abstract: A tube forming machine having at least two upper forming roll members in the breakdown section which may be selectively indexed into cooperative working relation with a lower forming roll member to produce different size tubes without the necessity of physically removing the upper forming roll member and replacing the same with another forming roll member of a different configuration.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: July 15, 1997
    Assignee: Abbey Etna Machine Company
    Inventors: Lewis H. Ruple, Susan J. Taber
  • Patent number: 5410901
    Abstract: Provided is a method and apparatus employing stepped overlap apertures disposed in adjacent overlap rings. The rings are arranged so that the diameters of the stepped apertures are sequentially decreasing. The apertures form a generally flat advancing metal tape into a cylindrical tube having overlapped edges. Typically, the cylindrical tube is used as a metal guard about a cable core. Each aperture is generally circular but one quadrant of the circle contains a step whereby the diameter of the aperture increases. The final tubular configuration of generally circular cross-section of the metal tape about the cable core is developed in the final smaller diameter overlap rings which bring together the two overlapped metal edges of the metal tape. Then, the metal tape passes to finishing rings which press the two engaged overlapped edges so that these edges now stay together as a longitudinal overlapped seam.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: May 2, 1995
    Assignee: Sumitomo Electric Lightwave Corp.
    Inventors: John J. Robblee, William D. Bohannon, Jr., Kevin C. Ewing
  • Patent number: 5366137
    Abstract: The can body to be welded in a welding station is shaped by gradually bending flat metal sheets zone by zone along a linear conveying route until the can body has been shaped. This linear conveying route at the same time leads to the welding station. In this manner can bodies can be produced and welded at a fast rate.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: November 22, 1994
    Assignee: Elpatronic AG
    Inventors: Peter Gysi, Armin Ineichen, Gideon Levy
  • Patent number: 5321889
    Abstract: A base drum of an electrophotographic photoconductor has a straightness of 0.04 mm or less, a roundness of 0.04 mm or less, a wall-thickness non-uniformity of .+-.0.015 mm or less and a maximum surface roughness (Rmax) in the range from 0.3 to 1.0 .mu.m. This base drum is produced by a method in which a metallic sheet in the form of a drum is welded by a high-frequency welder to form an electroseamed tube, and the electroseamed tube is subjected to the ironing or sinking-ironing process.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: June 21, 1994
    Assignee: Ricoh Company, Ltd.
    Inventor: Tadashi Watanabe
  • Patent number: 5301869
    Abstract: The present invention is a machine for manufacturing welded steel pipes, in which an edge bending roll for constraining under pressure a strip from its pipe edge portions to the boundaries between the pipe edge portions and its pipe side portions to bend the strip, a first center bending roll for constraining under pressure the pipe side portions to bend the pipe side portions, second to fourth center bending rolls for constraining under pressure the strip from the boundaries between the pipe side portions and its pipe bottom portion to the pipe bottom portion and applying lateral pressure to the pipe from both sides to bend the boundaries and the pipe bottom portion and a plurality of cage rolls arranged on both the sides of these center bending rolls, first and second fin pass rolls for further forming under pressure the pipe, are arranged in order from the stream side to the downstreamside of a roll forming process.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: April 12, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Takaaki Toyooka, Yuuji Hashimoto, Susumu Itadani, Tsutomu Ide
  • Patent number: 5271149
    Abstract: Conventionally co-axial cable is made in a continuous extrusion machine by continuously extruding an aluminum tubular cladding (1) through an annular die and simultaneously continuously introducing a core (4), comprised of a conductive wire surrounded by insulation, through an bore in a mandrel (3). A gap is inevitably present between the outer surface of the core (4) and the tubular cladding (1). To eliminate the gap it is necessary to reduce the diameter of the tubular cladding by swaging or drawing. The present invention disposes of the &wagging or drawing step by compacting the insulation of the core before introduction to the mandrel (3). The insulation then gradually expands to recover its original diameter and fill the cladding which has been extruded to its final diameter.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: December 21, 1993
    Assignee: Holton Machinery, Ltd.
    Inventor: Brian Maddock
  • Patent number: 5222284
    Abstract: Conventionally co-axial cable is made in a continuous extrusion machine by continuously extruding an aluminium tubular cladding (1) through an annular die and simultaneously continuously introducing a core (4), comprised of a conductive wire surrounded by insulation, through an bore in a mandrel (3). A gap is inevitably present between the outer surface of the core (4) and the tubular cladding (1). To eliminate the gap it is necessary to reduce the diameter of the tubular cladding by swagging or drawing step by compacting the insulation of the core before introduction to the mandrel (3). The insulation then gradually expands to recover its original diameter and fill the cladding which has been extruded to its final diameter.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: June 29, 1993
    Assignee: Halton Machinery Ltd.
    Inventor: Brian Maddock
  • Patent number: 5104026
    Abstract: A bumper bar for vehicles formed from rolled sheet steel having a closed tubular profile designed to have a high impact resistance, high strength-to-weight ratio, and a low cost of manufacture. The bar is preferably swept along its longitudinal axis to create a curvature consistent with modern automotive design.
    Type: Grant
    Filed: January 14, 1991
    Date of Patent: April 14, 1992
    Assignee: Shape Corporation
    Inventors: Peter Sturrus, Richard Heinz
  • Patent number: 5092512
    Abstract: A bumper bar for vehicles formed from rolled sheet steel having a closed tubular profile designed to have a high impact resistance, high strength-to-weight ratio, and a low cost of manufacture. The bar is preferably swept along its longitudinal axis to create a curvature consistent with modern automotive designs.
    Type: Grant
    Filed: January 14, 1991
    Date of Patent: March 3, 1992
    Assignee: Shape Corporation
    Inventors: Peter Sturrus, Richard Heinz
  • Patent number: 5061141
    Abstract: A method and apparatus for producing can bodies, wherein blanks are laterally centered after removal from a magazine, are engaged in the center of their rear edge and are transported into a shaping station in which initially the center section of the blank is bent into its final shape. While doing this, a central force and friction lock is produced between a transporting means and the deformed blank to realize reliable guidance of the already partially bent blank. To further transport the blank, it is contacted at its rear edge in the already completely bent region by two lateral transporting devices and is advanced to a seam forming station, while the opposite longitudinal edges of the blank are brought to an adjoining relationship.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: October 29, 1991
    Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung
    Inventors: Norbert Lentz, Harald Schmidt
  • Patent number: 5018268
    Abstract: Forming a metal shield on a cable core in which a frusto-conical forming surface for the shield has a plurality of former sections disposed side-by-side from a downstream end of the former. The sections are removable, in order, from the downstream end to increase the downstream end diameter of the forming surface and may be replaced, in order, so as to decrease the diameter at the downstream end for the purpose of applying shields to cable cores of different diameters.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: May 28, 1991
    Assignee: Northern Telecom Limited
    Inventors: Mohamed Chabane, J. Raymond Boucher, Ali Pan
  • Patent number: 5016459
    Abstract: A pair of slit type horizontal fin rolls (18) and a pair of vertical side rolls (19) having such a shape as having the conventional vertical side roll (19) formed by contracting its center portion are utilized, and due to the construction in which one set of each horizontal fin roll (18) and vertical side roll (19) adjustable horizontally, the depressing force is not applied to the material, and since the edge is restrained and shifted widthwise only with the horizontal force of the vertical side rolls (19) rotating freely, threading can be conducted very smoothly irrespective of the sectional shape of the material after break down, and even if the material size is changed, the threading can be conducted very smoothly without adjusting the roll position as strictly as in the past.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: May 21, 1991
    Assignee: Nakata Manufacture Company Limited
    Inventor: Ryosuke Kuramoto
  • Patent number: 5005395
    Abstract: A method of producing an electric-welded pipe by continuously shaping a steel sheet into a tubular form in a hot condition is disclosed, which is characterized by employing a forming roll arrangement of the constant pass-line type in combination with the downward bending system.
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: April 9, 1991
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Ichiro Yasumura, Kuniharu Fujimoto
  • Patent number: 4984357
    Abstract: Forming metal shield for cable core in which a metal tape is moved along a passline over a concave forming surface which tapers in a downstream direction. A convex rotating roller lying parallel to an adjacent region of the forming surface urges the tape against the concave surface to form the tape into a laterally curved shape. The tape then moves along the concave surface and through an overlapping die to complete the shape of the shield with the tape wrapped around the core with overlapped edges.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: January 15, 1991
    Assignee: Northern Telecom Limited
    Inventor: Ali Pan
  • Patent number: 4947671
    Abstract: The present invention relates to a device for manufacturing conical poles or conical pole members by roll forming sheet metal wherein said device (1) includes a conveyor path (5) along which sheet metal is transported, and a plurality of groups (10) of forming rolls (11, 12) positioned in succession along the conveyor path (5). In order to facilitate the roll forming and eliminate the risk of bending the sheet metal during the roll forming, the forming rolls (11, 12) in at least one of the groups (10) thereof are mounted on frame members (13) which are pivotable about vertical axes (26) such that the forming rolls (11, 12) can be set to run at angles (.alpha. or .beta.) relative to the center line (6) of the conveyor path (5) necessary to achieve a desired conical form of the finished pole or pole member or portions thereof.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: August 14, 1990
    Inventor: Wictor C. O. Lindstrom
  • Patent number: 4945743
    Abstract: An apparatus for producing an electric-welded pipe by continuously shaping a steel sheet into a tubular form in a hot condition is disclosed, which is characterized by a forming roll arrangement of the constant pass-line type in combination with the downward bending system.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: August 7, 1990
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Ichiro Yasumura, Kuniharu Fujimoto
  • Patent number: 4852790
    Abstract: An apparatus and method for continuously manufacturing optical fiber cable in which optical fiber is encased by an hermetically sealed homogeneous metal tube formed from flat metal strips. A first assembly of mating rollers having successively different shapes forms the flat metal strip into a partially formed tube having a longitudinal gap. Optical fiber is guided through the gap to lie within the partially formed tube. The tube is then closed by a second assembly of mating rollers having successively different shapes. A laser beam is used to weld the seam closed without filler metal and without heat shielding between the seam and the optical fiber. The finished tubing with optical fiber therein is sunk by being drawn through wire dies to reduce the diameter. A wheel draws the tubing through the apparatus at constant speed to effect a uniform weld line.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: August 1, 1989
    Assignee: K-Tube Corporation
    Inventor: Herbert E. Karlinski