Utilizing Plural Metal-deforming Tools Patents (Class 72/278)
  • Patent number: 11171528
    Abstract: In one possible embodiment, a motor winding is provided having a high density multi-conductor wire bundle with a compacted Litz wire bundle. The compacted Litz wire bundle has a serpentine configuration with a central portion having compacted Litz wire and end turns having non-compacted Litz wire.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: November 9, 2021
    Assignee: AeroVironment, Inc.
    Inventors: Wally Ewald Rippel, Zaher Abdallah Daboussi, Bradford M. Hori, Scott Garret Berman, Bart Dean Hibbs
  • Patent number: 10601273
    Abstract: In one possible embodiment, a motor winding is provided having a high density multi-conductor wire bundle with a compacted Litz wire bundle. The compacted Litz wire bundle has a serpentine configuration with a central portion having compacted Litz wire and end turns having non-compacted Litz wire.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: March 24, 2020
    Assignee: AeroVironment, Inc.
    Inventors: Wally Ewald Rippel, Zaher Abdallah Daboussi, Bradford M. Hori, Scott Garret Berman, Bart Dean Hibbs
  • Patent number: 9825497
    Abstract: In one possible embodiment, a motor winding is provided having a high density multi-conductor wire bundle with a compacted Litz wire bundle. The compacted Litz wire bundle has a serpentine configuration with a central portion having compacted Litz wire and end turns having non-compacted Litz wire.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: November 21, 2017
    Assignee: AeroVironment, Inc.
    Inventors: Wally Ewald Rippel, Zaher Abdallah Daboussi, Bradford M. Hori, Scott Garret Berman, Bart Dean Hibbs
  • Patent number: 8904842
    Abstract: Provided is a method for producing a metal wire with improved productivity in which a conventional drawing machine is used while wear of a die or occurrence of a break due to the ductility loss thereof is effectively prevented. Provided is a method for producing a metal wire 1 including a process of drawing a metal wire by using a slip type drawing machine. For a cone 11 of the slip type drawing machine, a cone having an even surface without an inclination angle with respect to the axis of rotation is used, as well as, a die 12 of the slip type drawing machine is positioned such that the metal wire 1 passes a location nearest to a drive unit in the direction parallel to the axis of rotation of the cone 11.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: December 9, 2014
    Assignee: Bridgestone Corporation
    Inventor: Takayuki Saito
  • Patent number: 8899087
    Abstract: The present invention provides a method which enables a steel wire to be highly strengthened with maintaining good ductility. Specifically, the present invention provides a method comprising: subjecting a high carbon steel wire material having carbon content of 0.85 to 1.10 mass % to a pre-stage drawing process with a predetermined magnitude of drawing, to form an intermediate wire material; subjecting the intermediate wire material formed by the pre-stage drawing process to a patenting treatment in which tensile strength of the wire material is adjusted to a range of 1323 to 1666 MPa; then subjecting the patented steel wire material to a subsequent drawing process including the final drawing.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: December 2, 2014
    Assignee: Bridgestone Corporation
    Inventor: Akihiro Kaneda
  • Patent number: 8850863
    Abstract: There is provided an aluminum-alloy material having sufficient electric conductivity and tensile strength as a wiring material and excellent in wire-drawing property, and an electric wire or cable using the same. An electric wire or cable includes an aluminum-alloy strand formed of an aluminum-alloy including Fe: 0.1% by mass or more to less than 1.0% by mass, Zr: 0 to 0.08% by mass, Si: 0.02 to 2.8% by mass, at least one of Cu: 0.05 to 0.63% by mass and Mg: 0.04 to 0.45% by mass, and the remainder being aluminum and unavoidable impurities.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: October 7, 2014
    Assignee: Yazaki Corporation
    Inventors: Kenichi Ishibashi, Kazumi Mochizuki, Yasunobu Kondo
  • Publication number: 20140203008
    Abstract: The present invention provides a flux-cored welding wire comprising a shell having a tubular cavity, which accommodates flux. The shell is made of 400 series stainless steels. The deposited metal formed after the welding using the flux-cored welding wire of the present invention has more uniform chemical compositions. Because the loss of chromium during the transition to the deposited metal is less than 0.1%, recourses is saved and welding cost is reduced. The filling ratio of the flux-cored welding wire of the present invention is 5%-25% (preferably 10%-20%). As a result, not only the stability of the compositions in the flux is increased, but also the disadvantages to the manufacture process caused by high filling ratio are avoided. The flux-cored welding wire of the present invention will not be rusty even after it is exposed to the air for a long time.
    Type: Application
    Filed: July 12, 2012
    Publication date: July 24, 2014
    Inventors: Fuhu Chen, Jie Yan
  • Patent number: 8573018
    Abstract: A system for manufacturing wire having a mill and a finishing station configured to receive the wire output from the mill in a continuous fashion. The mill has first and second dies and first and second capstans. The first die is configured to receive a wire having a first cross-sectional area and to reduce the cross-sectional area of the wire as it passes through the first die. The first capstan is configured to receive the wire from the first die and apply a first force on the wire. The second die is configured to receive the wire from the first capstan and to further reduce the cross-sectional area of the wire as it passes through the second die. The second capstan is configured to receive the wire from the second die and apply a second force on the wire. The wire exits the mill having a second cross-sectional area that is smaller than the first cross-sectional area, and is finished by the finishing station.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: November 5, 2013
    Assignee: Essex Group, Inc.
    Inventors: Gregory S. Caudill, Joshua S. Jur
  • Patent number: 8567222
    Abstract: The present invention relates to a method of manufacturing an insulated electric wire and an apparatus for manufacturing an insulated electric wire that can stably manufacture a conductor having a larger sectional width according to desired dimensions as compared to the rolling where the conductor is rolled by a pair of rolling rolls free-rotated, and that can conduct the entire process in a tandem arrangement.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: October 29, 2013
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Shinji Ichikawa, Satoshi Saito
  • Patent number: 8448488
    Abstract: A round steel rod having a carbon content between 0.30 and 0.60% is processed by a cold working process to form a flat wire for forming a ring gear. The cold working process forms a semifinished flat wire by at least one cold rolling or cold roller drawing step and at least one two-way or four-way rolling step. The semifinished flat wire is processed by die drawing using a drawing die to obtain a finished flat wire in a last stage of the cold working process. The cold working process reduces the round steel rod at a total area reduction of 65% or below.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: May 28, 2013
    Assignee: Kobe Steel, Ltd.
    Inventors: Hitoshi Kushida, Osamu Ishigami, Norio Okochi, Shoji Miyazaki
  • Publication number: 20120042707
    Abstract: Included are a wire supply part, a wire pulling part, a first capstan mechanism part and a second capstan mechanism part. The first capstan mechanism part includes a plurality of first capstans, a first rotation drive source and a first rotation transmission mechanism part that transmits the rotation drive force of the first rotation drive source to the respective first capstans, and the second capstan mechanism part includes a plurality of second capstans and a plurality of second rotation drive sources that rotatively drive the respective second capstans in an individually manner. Dies are provided between ones of the respective first capstans and the respective second capstans.
    Type: Application
    Filed: February 16, 2010
    Publication date: February 23, 2012
    Inventors: Jun Yoshimoto, Shinji Kamei, Sho Hayakawa
  • Publication number: 20100294013
    Abstract: A wire drawing apparatus (10) is used in a final drawing process to ensure adequate initial performance of adhesion between brass-plated steel wire and rubber without a drop in productivity. At least one of the die (14z) disposed in the most downstream position, the die (14y) disposed in the second most downstream position, and the die (14x) disposed in the third most downstream position is a drawing die having a friction coefficient ? of 0.12 to 0.41 with the brass-plated steel wire. The other dies (14) are drawing dies each having a friction coefficient ? of 0.1 or below. By using these drawing dies, brass-plated steel wire (13) is drawn, and a noncrystalline portion of high lattice defect density is formed on the surface of the crystalline portion of the brass-plating layer of the brass-plated steel wire (13).
    Type: Application
    Filed: January 26, 2009
    Publication date: November 25, 2010
    Inventor: Koji Matsuyama
  • Publication number: 20100047616
    Abstract: A wire (2) for use as a feedstock in metal spraying and in welding contains two components (4, 6) formed from different metals, with the components being in face-to-face contact along a convoluted interface (8) that extends throughout the interior of the wire. This leaves the distribution of the two metals in generally uniform throughout the cross section of the wire. To produce the wire, two flat strips (22, 22 or 30, 32) of the different metals are provided, with the strips (22, 32) of the second component overlying the strips (20, 30) of the first component to form a laminate (24, 34). Then the laminate is deformed into a U-shaped configuration with the second strip being confined within the first strip. Next the ends of the U-shaped laminate are turned inwardly. The resulting configuration, which has a convoluted interface, is drawn through a die to reduce its cross-sectional size and to densify it.
    Type: Application
    Filed: December 17, 2007
    Publication date: February 25, 2010
    Applicant: ARCMELT COMPANY, LC.
    Inventor: David J. Urevich
  • Patent number: 7640774
    Abstract: A wire drawing machine comprises a wire supply unit with an unwinding bobbin for unwinding a wire, a wire drawing unit or units for drawing and reducing the diameter of the wire, and a wire winding unit for winding the drawn wire. Each wire drawing unit comprises: a dancer roller for applying back tension to the wire; a wire drawing die for reducing the diameter of the wire; and a capstan for winding and transporting the wire without slip to apply front tension to the wire. The dancer roller is linearly moved substantially in parallel to direction of wire drawing of the wire drawing die, whereby the wire drawing unit can be reduced in width. A plurality of such wire drawing units can be placed between the wire supply unit and the wire winding unit in multiple rows so as to further reduce the width of the wire drawing machine.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: January 5, 2010
    Assignees: ASKK Co., Ltd., Factory-Automation Electronics Inc.
    Inventors: Michinori Hashizume, Jiro Kajino, Kosuke Takemoto, Kaoru Shimuzu
  • Publication number: 20090056405
    Abstract: A method of machining a tube includes performing an obverse drawing process to the tube, where the obverse drawing process draws the tube in an obverse drawing direction from a first end toward a second end of the tube. The tube is turned around to perform a reverse drawing process, where the reverse drawing process draws the tube in a reverse drawing direction from the second end toward the first end of the tube. The obverse and the reverse drawing processes are alternately performed until the tube is thinned to a desired thickness.
    Type: Application
    Filed: October 30, 2007
    Publication date: March 5, 2009
    Inventors: Jun-Yen Uan, Te-Chang Tsai
  • Patent number: 7296452
    Abstract: Disclosed are metallic wire with high surface quality and low-cost suitable for use as material for grip rings and a producing method and apparatus thereof. Metallic wire 34 deformed in a coil shape is passed through a shape correction unit 14 so as to straighten it. Furthermore, while upper and lower pressing rollers 19, 20, 26, 27 prevent the metallic wire 34 from warping upwardly and downwardly, wedge-shaped grooves are continuously formed on the metallic wire 34 by means of a first cutting roller 21 and a second cutting roller 23.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: November 20, 2007
    Assignee: Hiroaki
    Inventor: Shin Sumimoto
  • Patent number: 7073363
    Abstract: In order to increase safety with regard to methods for processing drawn materials, the invention proposes a method for processing drawn materials, especially rod- and tube-shaped metal drawn materials in which the drawn material is drawn through drawing dies using a multi-stage drawing unit and the drawn material is supplied continuously to a final production stage after leaving the multi-stage drawing unit.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: July 11, 2006
    Assignee: Schumag AG
    Inventor: Rainer Hergemöller
  • Patent number: 6886385
    Abstract: In a method for continuous production of metal wires, the cross section of a round metal wire is reduced in one or more stages. To do so, the metal wire is shaped in a bore that is open on one side to form a flat wire at least in the last stage.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: May 3, 2005
    Assignee: Nexans
    Inventor: Günter Lottner
  • Patent number: 6823706
    Abstract: A steel wire, 0.10-0.40 mm in diameter, obtained by subjecting a high-carbon (0.70-0.90 wt. %) steel wire material to heat treatment and wire drawing, wherein its tensile strength and test values of special repeated torsional tests satisfy a predetermined relation; and a method of manufacturing the same. A high strength steel wire which has so high a ductility as to substantially prevent the wire from being broken even during wire twisting, and which rarely encounters a decrease in the ductility even after the wire has been subjected to age hardening by heating, is obtained, and a method of manufacturing the same is economical.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: November 30, 2004
    Assignee: Bridgestone Corporation
    Inventors: Yoshikazu Kaneko, Naohiko Obana, Masuhiro Fujita, Hideki Masubuchi, Toshiyuki Kobayashi
  • Patent number: 6715332
    Abstract: A drawing apparatus for drawing metal and articles has at last one drawing carriage and a linear motor complex which determines the pattern of movement of that carriage and hence of the drawing operation.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: April 6, 2004
    Assignee: SMS Meer GmbH
    Inventors: Hermann-Josef Klingen, Norbert Zillekens, Karl-Heinz Häusler
  • Patent number: 6715331
    Abstract: Steel wire is drawn from an initial diameter to a desired final or intermediate diameter by the use of a non-linear tapered draft. During the non-linear tapered draft, the wire is drawn through a series of successive dies, reducing the wire diameter to a desired diameter, wherein the drawing strain at each successive die is gradually reduced. The drawing strain is based upon the actual strength of the steel at each die. The wire may also be subjected to a skin pass, reducing the wire by a diameter by less than 4%, following reduction of the wire to either the final or the intermediate diameter.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: April 6, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Michael Gregory Zelin, James Terry Lewis
  • Publication number: 20040055352
    Abstract: In a method for continuous production of metal wires, the cross section of a round metal wire is reduced in one or more stages. To do so, the metal wire is shaped in a bore that is open on one side to form a flat wire at least in the last stage.
    Type: Application
    Filed: August 12, 2003
    Publication date: March 25, 2004
    Applicant: NEXANS
    Inventor: Gunter Lottner
  • Patent number: 6688152
    Abstract: A drawing apparatus is assembled from modular units utilizing modular path-forming members and holder modules which can carry the drawing die and drawing carriages shiftable on the guide modules. The drives for the carriages are individual linear motors whose stationary components are the modular path-forming members disposed end-to-end.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: February 10, 2004
    Assignee: SMS Meer GmbH
    Inventors: Hermann-Josef Klingen, Norbert Zillekens, Karl-Heinz Häusler
  • Patent number: 6568076
    Abstract: A method of manufacturing a thick walled Moineau-style stator entails drawing a thick walled tube through rotatable internal and external dies to form a helical outer profile including crests and through on the tube. The tube initially has one end with a diameter smaller than the others, with the smaller diameter end being inserted between the inner and outer dies, where it is seized and drawn through the dies.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: May 27, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Richard D. Bottos, Lance D. Underwood
  • Patent number: 6449997
    Abstract: In an improved process for drawing metal wires and a tool for actuating the process, a metal wire is coated with a thin surface layer of lubricant and subsequently drawn, gradually in a series of single drawing operations. In a final of the drawing operations, the wire is forced to pass through a hole which exhibits an angle of convergence comprised between 30 degrees and about 85 degrees. As the wire passes through the hole, the layer of lubricant is removed and the drawn wire exiting from the hole is clean and lubricant-free.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: September 17, 2002
    Assignee: I.F.I.CO.M. S.r.l. Immobiliare Finanziaria
    Inventor: Pietro Bertolini
  • Publication number: 20020083753
    Abstract: There is a method for the production of stapling wire for use in the graphic industry for stapling periodicals, brochures and the like. A drawable wire is drawn from an initial material (A) having a low carbon content which is drawn in a first drawing step from a starting diameter (D1) to a temporary diameter (D2). This wire is drawn in a second drawing step from the temporary diameter (D2) to a final diameter (D3), so that a stapling wire results. This process provides a simple and economical method for producing stapling wire, wherein stapling wire is produced to fulfill the requirements of the graphic industry. In addition, this second drawing step is performed without previously subjecting the wire to a heat treatment.
    Type: Application
    Filed: September 11, 2001
    Publication date: July 4, 2002
    Inventor: Rudiger Tushaus
  • Patent number: 5893287
    Abstract: A method and a device for forming a metal billet into an elongated product body of desired cross-sectional shape and dimension by a combination of die drawing and hydroextrusion from a pressure chamber having a central axis, holding a pressurized working liquid and being fitted with a hydroextrusion die, which are characterized by placing a drawing die of smaller cross-sectional size than the hydroextrusion die in coaxial alignment with the latter at a distance L downstream therefrom whereby the hydroextrusion die and the drawing die form a pair of dies flanking an intermediary empty region; adjusting the distance L to fit the metal and size of the elongated product body such that any stretch of an extruded body passing through the intermediary empty region retains its elastic stability; continuously extruding the billet through the hydroextrusion die to form an extruded intermediate product; continuously passing the extruded intermediate product across the intermediary empty region into the drawing die; and
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: April 13, 1999
    Assignee: Project 3-P Precise Pipe Production Ltd.
    Inventors: Lev Lyahovetsky, Dmitry Genin
  • Patent number: 5634363
    Abstract: In a bending type mechanical descaling method, streak-like scales remain, which cause a die seizure in the subsequent drawing process. In the present invention, there is provided a quite new mechanical descaling technique capable of eliminating such streak-like scales. The new mechanical descaling method includes the step of passing a metal wire through a torsion generating portion for forcibly turning the metal wire around the axial center thereof while running the metal wire, thereby removing scales due to a difference in toughness between the metal wire and scales.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: June 3, 1997
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Tamotsu Shozaki, Kozo Katsube, Mamoru Murahashi, Katsumasa Tanaka, Yasuhiro Oki
  • Patent number: 5533370
    Abstract: According to the rolling method and the apparatus to be used for its execution of the invention, by rolling a tube to be rolled by using four rolls possessing roll grooves for forming a caliber in a shape of having a relief portion, cold reducing or cold stretch reducing is done continuously without causing wall thickness deviation, and by sizing the rolled tube material by a die disposed at the exit side, the dimensional precision and yield of rolled tubes may be enhanced by a small number of stands.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: July 9, 1996
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Kouichi Kuroda, Youichi Imamura, Kazuyuki Nakasuji, Chihiro Hayashi
  • Patent number: 5209092
    Abstract: The present invention is a process for drawing and forming a bright wire of a predetermined diameter and cross-section, from stock of a greater diameter. It includes the steps of (a) chemically removing scale from said stock; (b) applying a coating of lubricant carrier to the descaled stock; (c) applying drying air to the stock with the lubricant carrier thereon; (d) applying a lubricant to the carrier-coated stock; (e) drawing the lubricated stock through one or more pressure dies to decrease the diameter of the stock down to the desired predetermined diameter, including lubricating before each die; (f) buffing the drawn stock with a plurality of buffing wheels, said buffing wheels being applied to the drawn stock at a plurality of angles to the direction of travel of the stock to produce bright wire; and, (g) coiling the resulting bright wire into coils for subsequent use. The chemical descaling may be continuous or batch and the remainder of the process is continuous.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: May 11, 1993
    Inventor: Anthony J. Russo
  • Patent number: 5189897
    Abstract: A method and apparatus for drawing steel wire to produce high tensile strength, steel wire with increased torsional ductility. The wire is drawn through a plurality of standard dies (14) in a wire drawing machine (10). The cross section of the wire is reduced by a constant reduction of about 15% to about 18% at each of the standard dies (14) with the exception of the final two dies (18, 19). The wire is then reduced by about 10% to about 90% of the typical reduction at the next to last die (18) and the remainder of the reduction at the final die (19).
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: March 2, 1993
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Robert E. Lionetti, Patrick E. Joseph, Dong K. Kim, Farrel B. Helfer
  • Patent number: 5119661
    Abstract: The method resides in profiling a part of a cylindrical pipe by drawing it through a moulding device, and reducing the pipe over its entire length for the diameter of the cylindrical part of the pipe to be substantially equal to the diameter of the circumscribed circle of its profiled part.The apparatus for performing the method comprises a drawing bench supporting a drawing die (2) accommodated in a housing (1) and a drawing carriage. Cams (6) are situated in front of the drawing die (2) at both sides of the path of the travel of a pipe (5) being manufactured, their one ends carrying deforming rollers (7) and their other ends carrying forked levers (8) cooperating with the drawing carriage through a tie (11) with slots (10) receiving therein lock pins (9) adapted to engage the forked levers (8). The apparatus further includes a pivoted lever (29) with a bearing roller (31), mounted on the housing (1).
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: June 9, 1992
    Inventors: Gabdrashit S. Abdrakhmanov, Albert G. Zainullin, Anatoly V. Perov, Rishad T. Bulgakov, Yaroslav V. Vakula, Alexandr A. Fotov, Veniamin N. Duev, Gennady P. Moiseev, Ivan A. Lyashenko, Shamil K. Shayakhmetov, Rustam K. Ibatullin, Vladimir A. Aleshin, Alexandr Y. Frolov, Ilmas F. Mingazov, Ildus Z. Vafin
  • Patent number: 5097688
    Abstract: An in-line wire drawing machine includes a power-driven capstan rotatable about a horizontal axis and operable to unwind wire from a coil and to pull the wire through a drawing die for reducing the diameter of the wire. In order to conserve floor space, the coil is supported on an overhead turntable located above the capstan and rotatable about a vertical axis to enable unwinding of the coil. Wire unwound from the coil is directed rearwardly therefrom to a pair of guide rollers, proceeds downwardly alongside the rear of the machine and then travels forwardly to the die. A tangle detector is located upstream of the die and automatically shuts down the machine if the wire in the coil becomes tangled or snagged and fails to pay off of the coil in a free manner.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: March 24, 1992
    Assignee: Rockford Manufacturing Group, Inc.
    Inventors: Timothy J. Taylor, Richard A. Alcock, Michael J. Yankaitis
  • Patent number: 5014530
    Abstract: An automotive theft preventing circuit including a battery, ignition switch and starter connected in series. An anti-theft device connected in series therewith comprising a metallic adjusting screws contact plate and a spring loaded contact pins plate underneath it. A coded plastic card is underneath the last-mentioned plate having a plurality of upstanding pins and a plurality of holes in vertical and horizontal alignment with openings in the spring-loaded contact pins plate. Some of the metallic screws are surrounded by insulation to make the circuit more theft-proof.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: May 14, 1991
    Inventor: Donald Humphries, Sr.
  • Patent number: 4573336
    Abstract: For continuously drawing wire the temperature of the wire at each die is measured and the drawing speed is adjusted so the hottest running one of the dies is just below an overheated temperature.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: March 4, 1986
    Inventor: Erik Hagglund
  • Patent number: 4552599
    Abstract: A process for producing an insulated rectangular wire adapted for edgewise winding. A round wire of copper, copper alloy, aluminum or aluminum alloy is drawn through a die in a tandem-extrusion apparatus. The drawn wire is then electrolytically cleaned, following which an insulating coating is applied to the cleaned surface. The insulating coating is baked, and finally the insulated wire is subjected to at least one cycle of rolling. Preferably, the drawing is done with a single die and capstan to thereby remove any surface defects in the conductor having a size of 3 .mu.m or greater. The capstan should be made of a material softer than the material of the conductor. Further, it is preferred that fresh lubricating oil containing no metal dust be applied to the surface of the conductor during the drawing process.
    Type: Grant
    Filed: May 8, 1984
    Date of Patent: November 12, 1985
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Shigeo Masuda, Morihiko Katsuda
  • Patent number: 4549420
    Abstract: The wire-cross-section is first reduced down to an intermediate cross-section by subjecting the wire to a cold-rolling in a rolling-section with a plurality of stands which is part of a manufacturing unit. The cross-section is continuously further reduced down to the required cross-section in a wire-drawing section forming also part of the manufacturing unit. The first step in the reducing in the wire-drawing section is performed in a roller die, the other steps being performed in normal dies. The lubricating oil circuit for the roller die is completely isolated from the lubricating oil circuit for the other dies. After wire-drawing the wire is coiled on a coiling-machine.
    Type: Grant
    Filed: June 29, 1983
    Date of Patent: October 29, 1985
    Assignee: Lamitref Aluminium
    Inventor: Leon R. L. G. Cloostermans-Huwaert
  • Patent number: 4515000
    Abstract: A method is disclosed for preparing consumable insert rings for use in welding of conduit and the like, which utilizes a drawing operation. Particularly, a ring having a multiple gauge configuration is drawn by a process whereby the first drawing pass achieves 80 to 90% preparation of the final cross-sectional configuration. The drawing operation may be conducted at speeds of about 1' per minute, and final dimensions and shape of the inserts may be achieved by as few as two drawing passes. Surface uniformity is achieved and work hardening of the insert during formation is minimal. Starting stock utilized in the present method may be of lesser diameter than that used in conventional processes.
    Type: Grant
    Filed: September 17, 1982
    Date of Patent: May 7, 1985
    Assignee: Robvon Backing Ring Company
    Inventor: Roger W. von Ahrens
  • Patent number: 4484963
    Abstract: There is disclosed a method for fabricating an undersea communications cable containing optical fibers. The cable is fabricated so that fiber optical loss characteristics vary only slightly with changes in strain in the cable. During fabrication an adhesive bonds the cable core containing the optical fibers to a layer of steel wire for preventing creep therebetween.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: November 27, 1984
    Assignee: AT&T Bell Laboratories
    Inventors: Stephen N. Anctil, Robert F. Gleason, Don A. Hadfield, John S. B. Logan, Jr., Alfred G. Richardson
  • Patent number: 4439256
    Abstract: A cable comprised of coated conductors, wound together and compacted, has an insulating strip interposed between the two layers in which the conductors are disposed, to ensure good insulation therebetween. Apparatus for producing the cable includes a stranding machine, with which a hollow mandrel is used for the purpose of introducing the insulating strip between the layers of conductors, and a method for producing the cable is also provided.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: March 27, 1984
    Assignee: New England Electric Wire Corporation
    Inventor: Robert F. Meserve
  • Patent number: 4386513
    Abstract: A method of reducing the cross-sectional area of one or more extruded wires as a combined effect of drawing and rolling, by passing the wires through reduction rollers driven at a peripheral speed which exceeds the greatest extrusion speed of any of the wires, thereby avoiding the formation of fins due to the passage of excess material between the rollers. Use of this method makes it unnecessary to track the rotation speed of the rollers with variations in the extrusion speeds.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: June 7, 1983
    Assignee: SECIM
    Inventor: Michel Doudet
  • Patent number: 4373366
    Abstract: An improved machine for forming a plurality of thin, spiral grooves in the inner surface of a metal pipe. A grooving plug is inserted and held in the metal pipe in such a manner that its axial position is constant and the metal pipe, while being moved longitudinally, is pressed by a plurality of balls which rotate planetarily around the outer surface of the metal pipe at a position corresponding to the position of the grooving plug to continuously form a plurality of spiral grooves in the inner surface of the metal pipe. Thereafter, the metal pipe is finished through a die. The machine manufactures at a high rate metal pipe which has a smooth outer surface and a grooved inner surface.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: February 15, 1983
    Assignee: Hitachi Cable, Ltd.
    Inventor: Aritaka Tatsumi
  • Patent number: 4300378
    Abstract: A method and apparatus for forming elongated articles whereby a torque is transmitted to the deforming material as it passes through a die cavity to facilitate the reduction in the cross-section thereof as it passes therethrough. In one embodiment, the apparatus includes a rotatable die member having a longitudinally extending die cavity, the end region thereof having a reduced diameter circular cross-section. A cavity region upstream of the downstream end region has a non-circular cross-section. Means are provided for positively rotating the die member about its longitudinal axis.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: November 17, 1981
    Inventor: Sinnathamby Thiruvarudchelvan
  • Patent number: 4175416
    Abstract: An apparatus for manufacturing heat transfer tubes for use in evaporators and coolers for freezers, air conditioning units, refrigerators, and the like, with close machining tolerances. It forms cavities, with small openings communicating them with the outside, on the inside of a tube, through three steps of forming a multiplicity of alternate grooves and ribs in parallel on the inner surface of the tube, forming cuts in the concentrically directed crests of the ribs, and then forcing the crests sidewise so that the crest of each rib is bent down onto an intermediate part of the adjacent rib to form a cavity in between.
    Type: Grant
    Filed: January 11, 1978
    Date of Patent: November 27, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Toshihiko Fukushima, Kunio Fujie, Akira Arai, Nobukatsu Arai, Kimio Kakizaki
  • Patent number: 4120186
    Abstract: This invention relates to a method of determining the sequence of die sizes to be used in a multi-die/block drawing machine to draw metal from any given input stock size to any given final wire size to give optimum efficiency and proposes nomograms for achieving the sequence quickly and easily.
    Type: Grant
    Filed: June 1, 1977
    Date of Patent: October 17, 1978
    Assignee: Marshall Richards Barcro Limited
    Inventors: John Warner Pamplin, James Vine Bennett, Peter Fred Elson
  • Patent number: 4080818
    Abstract: A machine for drawing a plurality of metal wires including alternate odd-numbered wires and even-numbered wires, in which a plurality of drawing drums are rotatable in two parallel rows, each individual drum having a plurality of tracks at least equal to the number of wires to be drawn, the wire moving along a path which changes direction by extending successively from a drum in one row to a drum in the other row. A group of dies is arranged between each successive pair of drums, one die in each group serving for the passage of one of the wires. Two final drums are provided, and two sets of dies are arranged at different levels between the penultimate drums and the two final drums. One set and one final drum serves for the odd-numbered wires and the other set and the other final drum for the even-numbered wires.
    Type: Grant
    Filed: November 12, 1976
    Date of Patent: March 28, 1978
    Assignee: Sodetal-Societe Pour le Developpement du fil Metallique
    Inventor: Michel Gre
  • Patent number: 4079616
    Abstract: A method of producing cylindrical tubular items by drawing and a draw bench relate to methods and devices for plastic working of materials in a cold state. In the course of manufacturing cylindrical tubular items by drawing, said items are subjected to deformation on being drawn through a die and are imparted simultaneously a torsional moment, said torsional moment being imparted to that portion of each item which emerges from the die, while the item portion found in front of the die is restricted from torsion. The draw bench adapted for realizing the method of the invention comprises a device for drawing items through the die, said device being made as a driven carriage, a means for imparting to the item a torsional moment, said means being arranged on said carriage, and a means for restricting the item from torsion arranged at the die entry.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: March 21, 1978
    Inventors: Viktor Afanasievich Zazimko, Gennady Alexandrovich Savin, Mikhail Vladimirovich Babasov, Igor Yakovlevich Volin, Vitaly Fedorovich Shevchenko, Iraida Ivanovna Reidemeister, Nikolai Konstantinovich Erokhov, Ivan Markovich Evtushenko
  • Patent number: 4074557
    Abstract: A metal extrusion process with high reduction wherein a metal blank is extruded from a container through an opening which is formed by a plurality of work rolls. The metal blank is guided to the opening from the outlet of the container by causing the metal blank to adapt to the shape of the opening by means of a forming die so that the metal blank does not overfill the opening. This extrusion process is capable of forming the metal blank into a product having the desired cross section with high elongation in one pass and also the radius of curvature of the corner portion of the product can be freely adjusted.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: February 21, 1978
    Assignee: Nippon Steel Corporation
    Inventors: Samon Yanagimoto, Koshiro Aoyagi, Susumu Mizunuma, Kouki Nambu
  • Patent number: 4047418
    Abstract: Machine for simultaneous reduction and straightening of metallic tubes or rods has a reducing die which is mounted in the frame downstream of a guide for workpieces and upstream of a ring-shaped straightening tool whose axis orbits about the axis of the opening in the die. The outlet end of the internal surface surrounding the opening in the die tapers counter to the direction of lengthwise movement of workpieces through the die. The guide insures that the workpieces cannot be flexed upstream of the throat portion of the internal surface of the die, and a second guide can be provided downstream of the straightening tool to confine the flexing of the workpieces to the region between the throat portion of the internal surface of the die and the second guide. The tool is mounted in a spherical bearing which is installed in the eccentric bore of a sleeve driven by a pulley to rotate about the axis of the die whereby the tool orbits the axis of its passage about the axis of the opening in the die.
    Type: Grant
    Filed: September 24, 1973
    Date of Patent: September 13, 1977
    Assignee: Kieserling & Albrecht
    Inventors: Ralf Fangmeier, Alfons Goeke
  • Patent number: 4044447
    Abstract: A number of wires are gathered together and bound with an armoring material in the shape of a band. The wires in this condition are drawn by means of a wire drawing apparatus having dies and a capstan. A plurality of bundles of such wires are gathered together and bound in the same way as in the foregoing to form a composite bundle body, which is further drawn, and these processes are repeated until at least filaments of a specified diameter are obtained in quantities.
    Type: Grant
    Filed: March 7, 1972
    Date of Patent: August 30, 1977
    Assignee: Nippon Seisen, Co., Ltd.
    Inventors: Koichi Hamada, Kaoru Kikubu, Tsunehiro Itoh