Rods And Bars Patents (Class 219/156)
  • Patent number: 11028470
    Abstract: A method for heat treating metal materials by passing electrical current through a metallic workpiece to heat the workpiece via Joule heating to a preselected temperature for a preselected period of time, based upon the formula I2×R×t, wherein I is current, R is resistance and t is time. The current may be a direct or an alternating one. Various configurations of the method are envisioned wherein multiple current inputs and outputs are attached to the metal material so as to selectively heat specific portions of the piece including irregular shapes and differing diameters.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: June 8, 2021
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Aashish Rohatgi, Saumyadeep Jana
  • Patent number: 10770318
    Abstract: A heater assembly includes a heating member, a mounting member that mounts the heating member to a wall of an external component, and an insulator disposed between the heating member and the wall. The insulator electrically insulates the heating member from the wall and blocks a ground path from the heating member to the wall of the external component.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: September 8, 2020
    Assignee: Watlow Electric Manufacturing Company
    Inventors: Mohammad Nosrati, Roger Brummell, Kenneth D. Ames, Paul S. Whetstone
  • Patent number: 8584346
    Abstract: In a method for manufacturing a bar winding for the stator of an electric machine, in particular of a claw pole alternator for motor vehicles, resistance welding is used to form mechanically and electrically reliable and permanent connections in the winding overhang of the stator even with winding configurations that include four or more superposed conductor segments, and even with the very small amount of working space that remains for the necessary connections, using a minimum of production-related outlay. With a design, in particular, of four radially superposed conductor segments in the winding overhang, particularly advantageous configurations result in terms of the placement of the bar ends and in terms of the design of the welding electrodes.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: November 19, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Berger, Christoph Schwarzkopf
  • Patent number: 7065875
    Abstract: A stabilizer bar assembly for an automotive vehicle includes a stabilizer bar, a bushing mounted to the stabilizer bar, and a support ring mounted onto the stabilizer bar adjacent the bushing to provide a stop to prevent the bushing from moving axially along the stabilizer bar. The support ring has a plurality of inwardly extending projections. Each of the inwardly extending projections has a distal end in contact with an outer surface of the stabilizer bar. The distal ends of the inwardly extending projections are welded to the outer surface of the stabilizer bar to secure the support ring onto the stabilizer bar.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: June 27, 2006
    Assignee: Automotive Components Holdings, LLC
    Inventors: Haimian Cai, Xinjian Fan, Mikhal El Arculli
  • Patent number: 6903296
    Abstract: A metallic component is made by heating with subsequent hardening by rapid cooling. In the component unhardened regions remain, in that the component is electrically resistant heated and defined regions, either by partial resistance heating of the other regions, by overbridging or by cooling are excluded from heating above the austenitization temperature so that after a subsequent hardening process, they will remain with a ductile structure.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: June 7, 2005
    Assignee: Benteler Automobiltechnik GmbH
    Inventor: Rafael Garcia Gomez
  • Patent number: 6897407
    Abstract: An electrode pattern is used to apply preheating and final heating electric current to a workpiece whose smaller regions are bridged, or otherwise controlled as to the temperature so that for the final heating, all parts of the workpiece have substantially the same temperature and hence substantially the same electrical conductivity.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: May 24, 2005
    Assignee: Benteler Automobiltechnik GmbH
    Inventor: Rafael Garcia Gomez
  • Publication number: 20030066819
    Abstract: A resonance controlled conductive heating apparatus for heating a conductive load, has input terminals for receiving AC power. The primary winding of a transformer is coupled to the input terminals. First and second electrodes are coupled to the secondary winding of the transformer and are adapted respectively to electrically engage the conductive load in first and second contact points spaced from each other for direct passage of current therebetween. A resonant circuit is coupled between the secondary winding of the transformer and the electrodes. The resonant circuit has inductance, capacitance, voltage and operating frequency properties set to control a maximum current flowing across the conductive load between the electrodes.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 10, 2003
    Applicant: NORAX CANADA, INC.
    Inventors: Hamid Reza Shahani Shargh, Marie Gagnon, Majid Shahani shargh
  • Patent number: 6323458
    Abstract: In order to provide a method of joining a cylinder head 2 and a valve seat 3 by press and heat generated on passing an electrical current through both members 2, 3, to achieve satisfactory joining with minimized heat generated inside when the current is supplied, while eliminating the need for an infiltration step and reduce the production cost, inhibiting an increase in thermal conductivity of the valve seat 3 and improving the wear resistance thereof. The valve seat 3 is made of a sintered material made from a powdery material with a high electrical conductivity element such as Cu dispersed therein. The current and the pressure are applied with a first joining surface 3a of the valve seat 3 and a joining surface 2a of the cylinder head body 2 being put into surface contact with each other in advance.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: November 27, 2001
    Assignee: Mazda Motor Corporation
    Inventors: Seiji Nomura, Satoshi Nanba
  • Patent number: 5744773
    Abstract: A process and apparatus for effecting preheating of elongate metal parts, such as bars, for permitting subsequent deformative processing of the bar. Electrode-type clamps are attached adjacent opposite ends of the elongate bar, and direct-current electricity is applied to the clamps for transmission longitudinally of the bar to effect heating thereof. A further pair of electrode-type clamps is applied directly at each free end of the bar, with the electrode clamps of each end pair being disposed for engagement on opposite sides of the bar substantially flush with the end face of the bar. An electric current, such as an alternating-current, is applied across the sidewardly-spaced electrode clamps of each end pair to effect transmission of electrical current transversely across the bar in the direct vicinity of the end face to effect additional heating directly at the end of the bar to supplement the heating which is effected by the direct-current passed longitudinally through the bar.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: April 28, 1998
    Assignee: Newcor, Inc.
    Inventors: Robert G. Van Otteren, Frank Scott Mellen, Alfred R. Leger, Charles H. Gage
  • Patent number: 5234659
    Abstract: A plant for conductive electrical heating of elongated electrically conductive objects, e.g. steel blanks for further treatment in a roll mill. Said plant comprises a combination of the following features:at least two blanks (1) are provided in parallel and spaced from each other, and are connected with at least one current supply (2) by the aid of transmission contacts (3, 4), which are provided so as to be urged towards the ends (1a, 1b) of blanks (1). Blanks (1) with associated transmission contacts (3, 4) are provided in a heat insulated chamber (5), in which blank (1) and chamber (5) together constitute an electrical furnace, in which blanks (1) constitute the heating elements of the furnace. A conveyor or manipulator (7) is provided for insertion, and removal, respectively of blanks (1) in transmission contacts (3, 4) in chamber (5) through an opening (9) in the surrounding chamber wall in any order chosen.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: August 10, 1993
    Inventor: Asbjorn Moen
  • Patent number: 4623774
    Abstract: An automatic welding and annealing machine and specifically a machine for producing unique piston connecting rod assemblies utilized in compressors used in automotive air conditioning systems. The parts produced by this machine are comprised of a rod approximately one-quarter of one inch in diameter and one and three-quarters inch long to which steel balls of approximately one-half inch diameter are welded at each end. These parts are to be used as connecting rods for variable displacement piston pumps. The machine incorporates feeding mechanisms for feeding the separate parts to the welding station and then to the annealing station and also includes a laser inspection apparatus for checking the dimensions of the rods and of the welded and annealed parts, to see that they are within set tolerances. Measuring devices are also provided for monitoring and controlling the electric currents and forces used during welding and annealing of the parts.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: November 18, 1986
    Assignee: Sciaky Bros., Inc.
    Inventor: Ronald N. Ford
  • Patent number: 4574604
    Abstract: A continuous process for high speed fabrication of wire comprises the steps of directing wire through a first set of drawing dies to reduce the wire diameter to an intermediate diameter, applying a lubricant to the wire during the drawing process, annealing the intermediate diameter wire while it is still coated with some of the lubricant, controlling the tensile forces and elongation of the wire during the anneal, and drawing the annealed intermediate diameter wire to a desired final diameter in a second set of dies. The process is partially well suited for fabricating fine copper wire having improved mechanical properties.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: March 11, 1986
    Assignee: Essex Group, Inc.
    Inventors: Ralph A. Vogel, Keith E. Caudill
  • Patent number: 4399342
    Abstract: A grating of metal longitudinal strips (1) standing on edge in parallel with one another and narrower metal cross-strips (3) parallel with one another, is (for the achievement of higher load capacity) produced in such a way that in the longitudinal strips (1) slots (2) of changing width are incorporated, in which the inside width of the slot at the open end of the slot is chosen to the greater than, but on the contrary remote from this end of the slot is chosen to be less than the thickness of the cross-strips (3), cross-strips (3) are inserted into these slots (2) with the application to the strips (1, 3) of a welding voltage serving for the resistance welding, and with the application of pressure in the direction of insertion, so that material driven out from the edges of the slots forms weld beads (9) at the points of intersection of the strips.
    Type: Grant
    Filed: September 16, 1981
    Date of Patent: August 16, 1983
    Assignee: EVG Entwicklungs u.-Verwertungs Gesellschaft mbH
    Inventors: Klaus Ritter, Hans Gott, Gerhard Ritter, Josef Ritter
  • Patent number: 4326116
    Abstract: An apparatus comprising a case with a carriage mounted on horizontal guides thereof which carriage supports two brackets provided with contact clamps. Under the brackets there is mounted a bath containing a cooling medium. At least one of the brackets is movable and is resiliently pressed in the direction opposite to the second bracket. A rod of a power cylinder is in contact with the movable bracket which rod serves only to put the brackets closer. The contact clamps are provided with mandrels to be inserted into a tubular workpiece.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: April 20, 1982
    Inventors: Mikhail N. Bodyako, Georgy A. Semenjuk, Garik E. Zverkov, Stanislav A. Astapchik, Anatoly F. Kosov, Sergei M. Kashulin, Alexandr N. Baklanov
  • Patent number: 4175228
    Abstract: A method of hot bending a generally straight wire blank of a material being brittle in cold condition into a wire element having straight end portions and coils formed therebetween. According to the invention the rod blank is hot bent without a mandrel by clamping the end portions of the rod blank by means of two clamping jaws. The rod blank is heated to a softening temperature in the central wire portion which is to form the coils of the finished wire element, while the end portions are kept at a lower temperature. During the bending process at least one of the clamping jaws is brought along a movement path adapted to the desired coil formation.
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: November 20, 1979
    Assignee: Bulten-Kanthal AB
    Inventors: Venanzio Bizzari, Enar Hogfors
  • Patent number: 4115685
    Abstract: Tubes, rods, etc., are heated electrically in that current is applied via movable electrodes, one of which tracks the front and another one tracks the rear ends, but the electrodes remain spaced-apart during most of the heating.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: September 19, 1978
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Friedrich-Hans Grandin, Werner Fritsch, Gunter Wengenrod
  • Patent number: 4090058
    Abstract: In apparatus for resistance-heating elongated workpieces by direct passage of current therethrough, a device for displacing the elongated workpieces longitudinally into and out of the apparatus includes rail means providing a transporting surface into and out of the apparatus, electrode carriers having rollers rollably supporting the electrode carriers on the rail means, and drive means for driving the electrode carriers along the rail means in axial direction of a respective workpiece.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: May 16, 1978
    Assignee: Brown, Boveri & Cie Aktiengesellschaft
    Inventors: Werner Kielhorn, Gerhard Heyduk, Otto Hochstrasser
  • Patent number: 4086464
    Abstract: In a device for resistance heating of an elongated, generally cylindrical metal workpiece preparatory to quench hardening wherein the workpiece has a central, elongated axis and axially spaced first and second ends. The heating device includes first and second axially spaced electrode means for directing electrical current through the workpiece and between the spaced ends as the workpiece is supported in a selected, generally horizontal heating position. The improved feeding arrangement includes a transfer element with first and second separate nest means for supporting a workpiece with its axis generally parallel to the heating position. The second nest means is spaced horizontally from the loading position. This transfer element is reciprocally mounted for movement between a first location with a workpiece in the first nest means at the heating position and a second location with the first nest means being spaced from the heating position.
    Type: Grant
    Filed: July 20, 1976
    Date of Patent: April 25, 1978
    Assignee: Park-Ohio Industries, Inc.
    Inventors: Paul L. Day, George M. Mucha
  • Patent number: 4063065
    Abstract: A method for the consecutive resistance heating of sequentially advanced wire pins by means of electrodes positioned on end faces of the pins includes the following steps:A. connecting in series at least two wire pins to a current source through the electrodes;B. passing heating current through each wire pin for a number of consecutive heating periods which equal the number of the serially-connected wire pins; andC. between each heating period removing that wire pin which has been exposed to all consecutive heating periods and, in its stead, introducing a new wire pin.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: December 13, 1977
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Toni Wust