Nonrotary Electrode (e.g., Oscillating) Patents (Class 219/65)
  • Patent number: 9636485
    Abstract: The present disclosure is directed to methods for joining initially separate members of different metallic materials, e.g., as in joining segments of a multi-segment intravascular guide wire, as well as multi-segment intravascular guide wires so formed. Initially separate members are provided, which members comprise different metallic materials relative to one another (e.g., stainless steel and nitinol). The members are aligned with one another, and a first force is applied to the members while delivering electrical current through the members to solid state weld the separate members to one another. A follow up force that is greater than the first force is applied as solid-state deformation occurs and a weld nugget forms between the members. The weld nugget so formed is thinner and of a larger transverse cross-sectional area than would be produced without application of the follow up force.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: May 2, 2017
    Assignee: Abbott Cardiovascular Systems, Inc.
    Inventors: John A. Simpson, Jeffrey F. Dooley, Matthew J. Gillick
  • Patent number: 8987637
    Abstract: The welding torch performs oscillation of the torch head while moving the torch head along the circular weld path, under control of signals generated by a controller. The operator of the welding torch preferably has control over the amplitude of the oscillation, how fast it moves back and forth, and how long it remains at each turning point of the oscillation (dwell time).
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: March 24, 2015
    Assignee: The Reliable Automatic Sprinkler Co, Inc.
    Inventor: Ryan Messina
  • Patent number: 8097825
    Abstract: A laser-clad processing apparatus of the present invention is one which is for carrying out laser-clad processing onto a valve-seat portion of a cylinder head, and is characterized in that it comprises cylinder-head holding means (1) for holding a cylinder head (H) in an inclining manner so that the central axial line of a valve seat becomes the vertical direction, a laser-processing head (2) for irradiating a laser beam onto a process part of the valve seat and at the same time discharging a powdery material to this process part, rotary means (3) which rotates around the central axial line of the valve seat in such a state that the laser-processing head is inclined with respect to the vertical direction, and powdery-material supply means (4) for supplying the powdery material to the laser-processing head.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: January 17, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akio Sato, Yoshinori Ishikawa
  • Patent number: 5260538
    Abstract: The inductive heating of a reactor vessel by an external electromagnetic heating source is made more uniform by placing a susceptor between the heating source and the reactor vessel. In preferred embodiments, the reactor vessel is a fluidized bed vessel made of graphite and suitable for the preparation or treatment of polysilicon particles, and the susceptor is also made of graphite.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: November 9, 1993
    Assignee: Ethyl Corporation
    Inventors: David W. Clary, Andrew O. Wikman
  • Patent number: 5208433
    Abstract: A cooling tube (T) is incorporated into each conductor (C1) of the coil. The current carried by this conductor is divided between the strands which are maintained in thermal contact with the tube even in transposition or twist areas in which the conductor undergoes particularly marked deformations. The conductor features at least one half-turn twist between the electrical terminals of the coil.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: May 4, 1993
    Assignee: Rotelec S. A.
    Inventors: Jean Hellegouarc'h, Gerard Prost
  • Patent number: 5206880
    Abstract: A furnace for cracking of hydrocarbons, comprising one or several tubes through which the hydrocarbons flow during intensive heating and subsequent cracking. The starting material for the process can be e.g. naphtha or propane, mixed with a small amount of steam. When gases flow through the tube or tubes in the furnace, its temperature is increased up to about C. In order to achieve this, the temperature in the furnace compartment is C., and the temperature of the gases in the tubes in the furnace can then exceed C. The tubes are made from an alloy comprising 15-30 weight % chromium, 3-10 weight % aluminum, the remainder of the composition being mainly iron. This alloy allows significant extension of the possible duration of operation without exchange of the tubes. A further improvement can be achieved by the formation on the inner walls of the tubes of a layer of aluminum oxide, obtained by oxidation of the tubes before the furnace is first used.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: April 27, 1993
    Assignee: Kanthal AB
    Inventor: Jan-Olof Olsson
  • Patent number: 5134264
    Abstract: A device for induction heating of the inside of cylinder liners of reciprocating-piston engines to a transformation temperature, for the purpose of hardening. An inductor head is equipper with an aligning device designed as a spreadable cage which is equipped on the outside with clamping bars, clamping bosses a clamping shells which can be applied free from play and under the effect of force against the inner surface of the cylinder liner. The inductor loop is also displaced radially and brought into the working position by means of these clamping shells. Heating and hardening is carried out only with the inductor head in the clamped and exactly aligned state, whereas, after the clamping shells and the inductor loops have been released, a further indexed movement of the inductor head is possible. The work is carried out at relatively high alternating-current frequencies in the range between 400 and 500 kHz and at relatively high energy densities in the range above 5 kw/cm.sup.2 .
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: July 28, 1992
    Assignee: Mercedes-Benz AG
    Inventors: Dieter Burger, Walter Burbock, Peter Linden
  • Patent number: 5134629
    Abstract: A high frequency core and coil electric metal melting furnace is shown. This furnace has a lined channel in its inductor for carrying the molten metal. The invention provides an improved inductor for a core and coil furnace that is not subject to leakage of the molten metal from the channel into the rammed refractory support bed for the channel which leakage otherwise shortens the lift of the furnace. Also a method of lining the channel in the inductor for carrying the molten metal which forms the core is disclosed.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: July 28, 1992
    Assignee: Norton Company
    Inventor: Gerard M. Cullan
  • Patent number: 5104594
    Abstract: A surface of a fresh concrete body is dried by first covering the surface to be dried with a layer of bibulous granules having a great internal surface area for a time sufficient to draw generally all of the water out of the body via the surface and then preventing water from entering the layer from its side turned away from the body. The granules are finely divided hygroscopic particles, with an internal surface area of at least 200 m.sup.2 /g, preferably at least 800 m.sup.2 /g. The hydrophilic particles take up the moisture from the concrete and hold it in the layer of particles lying on the surface. This reduces the partial vapor pressure on the surface of the concrete body which effectively draws further liquid out of the concrete. The particles are a mixture of a cross-linked polymer that only swells in water and silica. The particles are carried in a coherent mat and are applied as a layer to the surface by laying the mat thereon.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: April 14, 1992
    Assignee: Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
    Inventors: Bernd Hillemeier, Claus Flohrer, Andreas Schaab
  • Patent number: 4568809
    Abstract: There is disclosed an improved method of melting a charge blank of an electrically-conductive fusible material including the steps of positioning at least one substantially ring-shaped charge blank in a crucible wherein the charge blank has an outside transverse dimension and height of about 1.1 to 10 and 0.8 to 3, respectively, times an inside transverse dimension thereof, and thereafter subjecting the charge blank to the electromagnetic field of an induction coil.
    Type: Grant
    Filed: August 28, 1984
    Date of Patent: February 4, 1986
    Assignee: Linn Elektronik GmbH
    Inventor: Horst Linn
  • Patent number: 4386578
    Abstract: A vacuum deposit device for use in producing thin film depositions. A metallic mass is accelerated along a pair of rail-type electrodes. The discharge current passing through the mass during acceleration is controlled as to magnitude and time duration to insure that the magnetic pinch pressure produced by the current exceeds the thermal expansion pressure of the mass thereby maintaining the mass in a solid, non-vapor state during acceleration. The device permits control over mass exit velocities and permits deposition areas of well defined shoulders.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: June 7, 1983
    Assignee: The Boeing Company
    Inventor: Ralph L. Haslund
  • Patent number: 4376883
    Abstract: To measure the relative power during a welding process, a position sensitive transducer is attached to a welding electrode to submit a signal in response to electrode motion. An accelerometer, carried on an axle of an electrode roll for a Soudronics pulse type resistance welder, will emit a signal indicative of the quality of the weld. The accelerometer measures the forging taking place during welding by means of its position sensitivity and the amount of forging has been found to be a function of the characteristics of the weld.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: March 15, 1983
    Assignee: American Can Company
    Inventors: Tan K. Dao, Vance B. Gold, Edward F. Kubacki, Walter J. Sieverin
  • Patent number: 4306134
    Abstract: Pipe welding clamp apparatus, including a pair of clamp assemblies, one being of conventional design and the other being of a special design permitting access to the axial space between the clamp assemblies so that internal welding assemblies may be disposed partly within said axial space and partly at a location opposite said special clamp assembly from said axial space. Each welding assembly includes a relatively large welding electrode reel and an electrode feeder at said location, communicated with a torch assembly in said axial space through a flexible tube. Each torch assembly includes means for torch position adjustments angularly and radially, and includes novel means for oscillating the torch so that a wider root weld is formed which will bridge the welding gap between adjacent pipe ends in spite of torch position misalignment and in spite of irregularities in pipe alignment and welding gap width. Novel clamp locator means and wheel support means are also disclosed.
    Type: Grant
    Filed: August 1, 1979
    Date of Patent: December 15, 1981
    Assignee: Midcon Pipeline Equipment Co.
    Inventors: Clyde M. Slavens, Edward A. Clavin, James E. Alleman, Henry T. Ray, Edgar H. Douglas
  • Patent number: 4221972
    Abstract: An outer receptacle has at least one opening for receiving an elongated article to be treated and an inner metal container, within the receptacle, is arranged to around only that portion of the article that is to receive treatment. An electrode in and insulated from the metal container is spaced from the article so that the receptacle, container and article can be held at one potential while a different potential is applied to the electrode to produce a glow discharge and heat only that portion of the article within the metal container. The structure also provides for introducing a selected gas into the container and receptacle.
    Type: Grant
    Filed: January 19, 1979
    Date of Patent: September 9, 1980
    Inventors: Werner Oppel, Horst Rordorf
  • Patent number: 4157930
    Abstract: A process and a rubber-base bonding material in the form of a preformed strip for retreading vehicle tires using a prevulcanized tread and microwave heating for vulcanizing and binding the bonding strip to the tire carcass and to the tread is disclosed, wherein a bonding strip is used whose dielectric loss factor at the vulcanizing (retreading) temperature is higher than the loss factor of the prevulcanized tread, so that the microwave heat applied will be concentrated to the bonding strip and vulcanize the same providing satisfactory adhesion between carcass and tread without the already prevulcanized tread being destroyed or significantly reduced in quality due to the effect of the excess heat.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: June 12, 1979
    Assignee: Elektra Regummeringsteknik Aktiebolag
    Inventors: Leif A. B. Bjorkman, Lars-Erik J. Eklund
  • Patent number: 4068292
    Abstract: Method and apparatus for minimizing or preventing the deleterious skin heating effects associated with conventional short wave diathermy treatment. The disclosed method includes attenuation of the electrostatic field transmitted by the applicator head and transcutaneous transmission of the radiated electromagnetic energy substantially unimpeded to the deep body tissues to be treated. The attenuation of the electrostatic field is performed by an electrostatic shield, which is adapted to be positioned on the diathermy applicator head between the radiating electrode and the patient receiving treatment. However, the radiated electromagnetic field, which is primarily responsible for the therapeutic generation of heat in relatively deep body tissues, passes through the shield substantially unimpeded. The shield comprises a plurality of narrow, preferably metallic, spaced apart strips and an electrically conductive loop which surrounds the strips and is coplanar therewith.
    Type: Grant
    Filed: July 22, 1976
    Date of Patent: January 10, 1978
    Assignee: International Medical Electronics, Inc.
    Inventors: Fred M. Berry, James N. Shirley