Patents Examined by Catherine Sigda
  • Patent number: 4723060
    Abstract: An improved feeder for feeding particulate materials to a weld zone wherein the particles of different materials fed are in desired proportions to each other at any cross-section of the outlet device, the feeder converting an intermittent feed to a continuous homogeneous flow and having dispersal apparatus positioned within the feeder so that welding material to be fed to the weld zone must pass through the dispersal apparatus.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: February 2, 1988
    Inventor: Roman F. Arnoldy
  • Patent number: 4723061
    Abstract: A flux cored welding electrode for use in electric arc welding with a shielded gas, which electrode includes a tube of low carbon steel having on the inside thereof a titanium dioxide based flux with fluxing ingredients including aluminum oxide in the amount of 0.1 to 0.5% of the total weight of the electrode. The improvement of the invention wherein the titanium dioxide based flux with aluminum oxide free of magnesium or compounds of magnesium.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: February 2, 1988
    Assignee: The Lincoln Electric Company
    Inventors: Robert P. Munz, John R. Gonzalez, Ronald J. Gordish
  • Patent number: 4654501
    Abstract: A method is presented for metal bonding of a base metal by creation of a weld puddle by means of an air cooled gas-tungsten-arc torch.As the puddle is created, the filler metal is fed as a wire into the puddle by means of a cold wire feed mechanism. The torch is automatically moved across the base metal in a longitudinal direction. The filler metal is deposited as the torch transverses the base metal. At the end of each stroke, the base metal is automatically indexed radially to the width of the weld bead. The process is continued until the bearing journal has been completely covered with filler metal to the required thickness.In a disclosed preferred method, the filler metal is a tin, antimony, copper babbitt alloy which is bonded to a bronze metal for bearings.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: March 31, 1987
    Inventor: Ray Piatt
  • Patent number: 4639576
    Abstract: A consumable electrode including a core wire and a coating adapted for welding clad steel products. The resulting weld deposit overcomes the problem of iron dilution which tends to degrade the weld when available electrodes are utilized. Such clad products are often exposed to sulfur and acidified chloride environments.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: January 27, 1987
    Assignee: Inco Alloys International, Inc.
    Inventors: Lewis E. Shoemaker, Thomas O. Bates
  • Patent number: 4591686
    Abstract: A device for feeding electric power to a roll-like revolving electrode in an electrical resistance welding machine includes a feeder rotor provided in a shaft formed integrally with a revolving electrode and a feeder plate extending in the moving direction of the revolving electrode and disposed in contact with the periphery of the feeder rotor. The periphery of the feeder rotor is electrically coupled to the electrode surface of the revolving electrode, and the feeder plate is connected to a power supply. Consequently, the electrode surface of the revolving electrode is electrically coupled to the power supply.
    Type: Grant
    Filed: May 1, 1984
    Date of Patent: May 27, 1986
    Assignee: Toyo Seikan Kaisha Limited
    Inventors: Kenji Matsuno, Kazuma Kuse
  • Patent number: 4572937
    Abstract: A welding machine with wire electrodes is used to electrically resistance roll seam weld tin plate. Only one electrode wire running over both of the electrode carrying rolls is used. To prevent the formation of a loop in the wire stretch between the electrode carrying rolls a hard wire is required which is produced by a prior rolling of a soft round wire. With this rolling there results however a non-uniform hardness distribution over the wire cross section with areas of high and areas of low material hardness so that the average strength increase over the entire wire cross section of the electrode wire remains below the increase in strength which could theoretically be reached if no portion of the wire cross section remained outside of the area of high material strength.
    Type: Grant
    Filed: September 18, 1984
    Date of Patent: February 25, 1986
    Assignee: Soudronic AG
    Inventors: Paul Opprecht, Wolfgang Weil
  • Patent number: 4556774
    Abstract: A tube sheet welding apparatus for the rear or back face of a tube sheet. The welding head apparatus includes a welding head housing with an internal opening therethrough. The particular tube to be welded is to be located through the internal opening. The welding head housing is to be separatable into two separate halves and to be clamped tightly onto the tube to be welded. The welding electrode is mounted within a welding electrode housing which is located within the welding head housing. The welding electrode, as well as the welding electrode housing, is rotated through a gear assembly to complete the welding operation of the tube to the tube sheet. After welding, the welding head housing is split apart permitting separation of such from the tube that has now been welded permitting movement of the welding head housing to another tube that is then to be welded. Inert gas is to be supplied to the welded area through an inert gas passage assembly located within the welding head housing.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: December 3, 1985
    Inventor: Gasparas Kazlauskas
  • Patent number: 4553019
    Abstract: A gouging wire electrode comprising a metal shell, and a powdery or particulate filler section packed into the metal shell, the composition of the filler section comprising 80-95% by weight of carbon and 5-20% by weight of thermosetting resin binder, the bulk density of the filler section being 1.2-1.7 g/cm.sup.3 and the cross-sectional area of the filler section being 60-90% of the total cross-sectional area. It produces stabilized arcs during electric discharge and is consumed slowly and can replace the conventional carbon electrode.
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: November 12, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masanori Maeda, Koji Ishihara, Tetsuo Ikebata
  • Patent number: 4485289
    Abstract: An improved electrical resistance welder which provides the same welding current at the welding electrodes as prior welding device while requiring less input current, and providing lower reactance, less weight and overall increased efficiency. The resistance welder includes a transformer having a pancake type primary winding formed of a metal tube thrugh which a coolant is flowed. Portions of the primary winding are adjacent the transformer secondary and thus the primary winding also functions as a heat sink to cool the secondary.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: November 27, 1984
    Inventor: Charles A. Schwartz
  • Patent number: 4473738
    Abstract: An apparatus for hot forming a polygonal head on an end of a tie rod includes a split electrode for gripping a tie rod and a reciprocating electrode for deforming the tie rod end. One of the electrodes defines a die cavity having walls forming a polygonal contour and a depth greater than a predetermined thickness of the tie rod head to be formed, and the other electrode includes a boss positioned in registry with the die cavity such that the boss may enter the cavity upon movement of the reciprocating electrode into abutment with the split electrode, thereby forcing the heated end of a tie rod into the polygonal contour of the cavity. The preferred method includes intermediate steps of lightly gripping the rod by the split electrodes and lightly contacting the rod tip by the reciprocating electrode to locate the rod accurately with respect to the die cavity.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: September 25, 1984
    Assignee: Dayton Superior Corporation
    Inventors: Charles R. Wolfe, Ivan C. Eltzroth
  • Patent number: 4454406
    Abstract: The invention provides a method for electroslag welding of light metals, which includes establishing a slag bath, fusing an electrode and edges to be weld-joined, and filling with molten metal the gap between the edges, the weld metal being held in a liquid state after switching off the welding current with concurrently increasing the slag bath heat capacity.The method employs a flux of the following composition (in wt. %):______________________________________ barium fluoride 60.0 to 90.0 calcium fluoride 5.0 to 15.0 lithium fluoride 1.0 to 5.0 sodium fluoride 1.0 to 10.0 potassium fluoride 1.0 to 15.
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: June 12, 1984
    Assignee: Institut Elektrosvarki Imeni E.O. Patona Akademii Nauk Ukrainskoi SSR
    Inventors: Anatoly N. Safonnikov, Anatoly V. Antonov
  • Patent number: 4436980
    Abstract: An electrical arc welding device for two workpieces to be welded together along an annular weld seam, e.g. ends of pipe sections, and in which a magnet arrangement surrounds the welding-seam path. According to the invention, a magnetizable ring is formed by the inwardly extending poles of a plurality of magnets having flat cores and surrounded by coils for electromagnetically energizing the cores.
    Type: Grant
    Filed: May 12, 1981
    Date of Patent: March 13, 1984
    Assignee: Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft
    Inventors: Norbert Pache, Karel Mazac
  • Patent number: 4427868
    Abstract: A mounting fixture for an automatic welding apparatus for precisely centering the rotating welding electrode within the welding area. The mounting fixture is mounted onto a portion of the workpiece adjacent the welding area. An indexing device is connected to the welding fixture housing which is to determine the precise location for the welding electrode. The mounting fixture is to be movable a limited amount determined by the position of the indexing device. Once the precise position of the indexing device and the mounting fixture has been obtained, the mounting fixture is fixed with respect to the workpiece. An automatic welding head is then mounted on the mounting fixture and the now precisely located welding electrode is then to be utilized to produce the desired weld.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: January 24, 1984
    Inventor: Gasparas Kazlauskas
  • Patent number: 4427869
    Abstract: Method is disclosed for manufacturing a panel assembly comprised of an inner panel and an outer panel which are welded together at the peripheral portions thereof.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: January 24, 1984
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Toshio Kimura, Kunitoshi Kataoka, Yoshiaki Yamaji, Hiromi Iwasaki, Shinichi Yamashita
  • Patent number: 4424436
    Abstract: A crucible for containing molten magnesium, and a process for forming the crucible. The crucible is formed from ferritic stainless steel, and particularly type 444 stainless steel plate. The method involves forming ferritic stainless steel plate into component parts of the crucible, while maintaining the ferritic stainless steel plate at temperatures above about 200.degree. F. but below the "blue brittle" temperature range. Further, the method involves special techniques for welding the crucible parts. Specifically, the crucible parts are preheated to a temperature of 100.degree. -150.degree. C. and are completely welded by a process utilizing multiple welding passes with a special metal inert gas shielded welding technique before any cool down of the crucible parts below 100.degree. C. is allowed. The welds extend completely through the crucible walls, which are the thickness of steel plate, and completely incorporate the crucible parts while being essentially free of cracks.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: January 3, 1984
    Assignee: American Tank & Fabricating Company
    Inventor: Kenneth J. Humberstone
  • Patent number: 4420673
    Abstract: A novel method for producing a homogenous weld exhibiting a superior grain structure, higher strength, and superior durability, using an extrusion-fusion type battery intercell welder having a novel electrode construction which provides improved current carrying characteristics.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: December 13, 1983
    Assignee: General Battery Corporation
    Inventor: William J. Eberle
  • Patent number: 4419563
    Abstract: In a rotary arc-welding method which comprises: directing a nozzle substantially vertically toward a weld zone of objects of welding; feeding a consumable welding electrode through said nozzle eccentrically from the center axis of said nozzle toward said weld zone; feeding welding current to said consumable welding electrode to produce an arc between the tip of said consumable welding electrode and said weld zone to weld said objects of welding with each other by means of the arc heat; rotating said nozzle to cause a circular movement of said arc from the tip of said consumable welding electrode corresponding to the eccentricity thereof; and, feeding a shielding gas toward said weld zone to shield said arc and said weld zone from the open air; the improvement characterized in that: the diameter of said consumable welding electrode is limited within the range of from 0.8 to 1.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: December 6, 1983
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Hirokazu Nomura, Yuji Sugitani
  • Patent number: 4414459
    Abstract: Apparatus for overhead welding a first metal plate to a second metal plate comprising a base; an electrically insulated support for granular flux, adapted to span and cover with flux an overhead joint to be welded, on the base; a welding wire guide for directing the wire to an overhead joint covered by the flux support; and a flux feeder at least partially supported by the base for forcing granular welding flux onto the flux support to cover the joint with flux.A method of welding using the apparatus is also disclosed.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: November 8, 1983
    Assignee: Chicago Bridge & Iron Company
    Inventors: James E. Sims, Robert C. Schmick
  • Patent number: 4409466
    Abstract: A method of manufacturing a hoop for a nuclear reactor vessel, equipped internally with projecting guide blocks serving for the guidance of the internal equipment. The method consists in coating an outer cylindrical hoop (1) of low-alloy steel internally with a thin plating (2) of stainless steel and in attaching supporting blocks (3) to the inside of this hoop, leaving bare an area of low-alloy steel of the hoop surrounded by the stainless steel plating (2), depositing on this hollowed area by arc welding a plating (34) of nickel-base alloy of Inconel type until a profile is obtained which projects with respect to the plating (2) of stainless steel, machining this plating (34) and then arc welding thereto a separate piece (35) of nickel-base alloy of Inconel type with addition of nickel alloy of Inconel type deposited in a groove (4) formed between the plating (34) and the separate piece (35).
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: October 11, 1983
    Assignee: Framatome
    Inventor: Alain Commeau
  • Patent number: 4404458
    Abstract: A method for attaching a bicycle fork fitting to a fork leg is disclosed, using a particular fork fitting means. A steel pipe is formed with a fork leg including its one closed distal end with a joint. The fitting means is provided with projections at the portions near to both ends of the side thereof to be welded. Electric currents are passed through the closed portion of the fork leg and the projections of the fitting which are brought in contact with each other under pressure. Upon reaching a temperature suitable for welding, the thus integrated arrangement is upset under greater pressure, so that the fitting is welded to the fork leg.
    Type: Grant
    Filed: July 1, 1981
    Date of Patent: September 13, 1983
    Assignee: Tange Industries, Ltd.
    Inventor: Yasuhiro Tange