Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 4851636 | Method and apparatus for generating an ultra low current plasma arc A method and apparatus for generating a plasma arc used in arc welding, arc transformation hardening, minute working, etc. A plasma gas used for generating a plasma arc includes xenon. A tungsten electrode having a diameter of 0.5 millimeters or less is u... | 07/25/1989 |
| 4843210 | Downward gas-metal-arc welding process A gas-metal-arc welding process, utilizing a consumable, axially advanced, wire electrode and a four-gas shielding mixture, forms a weld bead along a vertically downwardly direction. As the bead is formed, the electrode is moved vertically downwardly in a... | 06/27/1989 |
| 4837418 | Method and apparatus for forming welded rings A welding machine for welding opposed ends of a forming blank using a micro plasma welding device. The blank formed into a ring and the ends of the ring are clamped in an opposed manner and welded. The next blank to be formed is clamped prior to completio... | 06/06/1989 |
| 4837420 | Method and apparatus for conducting current to an electrode in arc welding, arc cutting or the like operations A method of conducting electricity in an arc welding device especially to an arc electrode (1), such as a welding, cutting, cleaning or electrolyte coating electrode, or to a device supporting such electrode, as well as an arc welding device to realize th... | 06/06/1989 |
| 4835359 | Method of manufacturing hemispherical tank heads A method of manufacturing hemispherical tank heads is disclosed in which a pair of planar lune members having a generally football shape are cut from flat metal stock. The members are each then formed into a three dimensional lune section having a general... | 05/30/1989 |
| 4831234 | Automatic welding turntable An automatic welding turntable for welding together the cut-apart halves of a reconditioned torque converter is tilted to cause the bead of weld to fill the crack between the halves of the torque converter. A motor rotates the torque converter in a first ... | 05/16/1989 |
| 4813806 | Welding beveling of T-joint A welding beveling of a T-joint of a member welded to a rib on a lower plate, the rib varying in thickness along its length, comprises a beveling on an upper plate partially overlapping the rib at the thicker portion of the rib and having a clearance betw... | 03/21/1989 |
| 4788411 | Welding method which provides a weld with corrosion protection A welding method for metal parts includes preparing the surface areas of the parts to be welded to provide bare metal surfaces which are clean and dry, clamping said parts together, coating the bare metal surface with a liquid coating comprised of zinc du... | 11/29/1988 |
| 4782206 | Method and apparatus for controlling weld bead shape to eliminate microfissure defects when shape melting austenitic materials A method and apparatus for eliminating microfissure defects in shape melted austenitic material components by closely controlling the deposited weld bead shape to a geometry where the underbead shape has no sharp discontinuties. Oscillation of the welding... | 11/01/1988 |
| 4782205 | Method of welding involving weld bead shaping and arc deflection and apparatus for practicing said method A method and apparatus for welding involving directing a high velocity stream of gas at an angle to a welding arc in the direction of travel of the welding arc and onto the molten pool of metal formed by the arc as the molten pool solidifies, and a method... | 11/01/1988 |
| 4782211 | Method of welding and product obtained therefrom A cluster welding electrode assembly is provided which permits the deposition of maximum weights of weld metal with minimum amperage and voltage values. The assembly is comprised of a central rod electrode having circumferentially grouped or nested therea... | 11/01/1988 |
| 4780593 | Balance correcting apparatus for a rotating body The unbalance in rotating equilibrium of a rotating body is corrected by carrying out a padding welding on the rotating body. The correction of the unbalance is carried out, first, by determining a position and an amount to be padded on the rotating body on th... | 10/25/1988 |
| 4764658 | Process and apparatus for welding steam turbine diaphragms The welding of the body and of the ring with the distributor of a steam turbine diaphragm is carried out in four different areas holding an assembly, formed by two semi-diaphragms, in a substantially vertical position, at most tilted a few degrees off ver... | 08/16/1988 |
| 4760241 | Method of high-speed rotation arc automatic fillet welding An automatic fillet welding method for effecting the welding by rotating a welding electrode and thereby rotating an arc at a high speed. By rotating the arc with a predetermined rotation direction, rotation speed and rotation diameter, a weld metal is pr... | 07/26/1988 |
| 4754118 | Method for fabricating a structural assembly having narrow gaps A method for assembling narrow gap members by welding is described. In the method, separate narrow gap members having spaces therein when assembled are provided and a deformation-preventive material consisting of a water-soluble material or a material cap... | 06/28/1988 |
| 4751366 | Process for the arc welding of nitrogen alloyed steels Process for arc fusion welding under atmospheric conditions of a base material which is a nitrogen alloyed steel, in which the bulk share of nitrogen in the steel is above its solubility limit under atmospheric conditions. The nitrogen released during the... | 06/14/1988 |
| 4742611 | Battery assembly process and apparatus Method and apparatus for joining lead battery parts (e.g., plate lugs, intercell connectors, terminals, etc.) together via a low resistance electrical coupling wherein substantially oxide-free, arc-melted, superheated molten lead is cast into a cavity bet... | 05/10/1988 |
| 4742204 | Lead welding process, apparatus and product Flashing for a pipe is produced by joining a lead sheet having a hole in it for passing over the pipe, and a lead cylinder which is to surround the pipe and be bent into the top thereof. The joint is formed by producing mating flares on the lead sheet and... | 05/03/1988 |
| 4727233 | Method for sealing tubes The method allows the sealing of metal tubes, particularly of stainless steel, for example, tubes for filling containers for gas at high pressure or evacuation tubes for vacuum vessels. It includes the steps of locally squashing the portion of the tube to... | 02/23/1988 |
| 4686345 | Method of rebuilding a strip mill guide A method of rapidly and inexpensively rebuilding strip mill guides which are formed of a copper material having some percentage of lead therein utilizes a copper welding rod having a diameter of one-quarter inch and a 600 ampere arc welding current. The m... | 08/11/1987 |
| 4680440 | Shielding arrangement and method for TIG A gas shielding arrangement and method is disclosed for use with tungsten inert gas (TIG) welding and the like, consisting of an inner, primary flow of an inert gas such as argon, passing about the electrode and weld area, and an outer radially spaced sec... | 07/14/1987 |
| 4672164 | Composite metal matrix welding A method for joining individual pieces of material together includes the steps of heating the pieces to be welded together, at least one of which consists of a metal matrix with a relatively low melting point and a reinforcement material distributed there... | 06/09/1987 |
| 4662558 | Spatter preventing method In welding of metals, spatter preventing effect can be enhanced by spreading on the metal surface a halogen-containing duodimensional polymer having a proper degree of affinity for metals and other materials, being thermoplastic and also having a restorin... | 05/05/1987 |
| 4661676 | Process for producing camshaft with cams subjected to remelting chilling treatment A process for producing a camshaft with cams include the steps of forming a surface hardened layer in each of the cams by a remelting chilling treatment using high density energy (e.g., a TIG arc), characterized in that after the remelting chilling treatm... | 04/28/1987 |
| 4661677 | Deep penetration laser welding of sheet metal A sheet metal welding process is described in which limited zones of contact of metal sheets (A, B) are heated locally by a power laser so as to cause fusion in the manner of spot or seam welds (P, C). Such spot or seam welds are achieved by deep penetrat... | 04/28/1987 |
| 4649426 | Electronic imaging system and technique A method and system for viewing objects obscurred by intense plasmas or flames (such as a welding arc) includes a pulsed light source to illuminate the object, the peak brightness of the light reflected from the object being greater than the brightness of... | 03/10/1987 |
| 4645903 | Gas metal arc welding process The gas metal arc welding process of the present invention extends the axial spray metal transfer range with a non rotating arc from 10 to 25 lbs/hr using an electrode wire diameter between 0.035 to 0.052 inches. The process is carried out by maintaining ... | 02/24/1987 |
| 4639574 | Automatic duct welding machine A welding gun of an arc welding machine is mounted for vertical reciprocal movement on a movable frame portion. The movable frame portion is connected to a stationary frame portion by piston cylinder assemblies which upon actuation raise and lower the mov... | 01/27/1987 |
| 4634833 | Fire extinguishing system for an electric arc welding apparatus A fire extingushing system for an electric welding apparatus is disclosed having a source of inert gas which can be activated by switches (27, 28) in a torch (20) which provides a two-step flow of gas through magnetic valves (40, 44). In the preferred emb... | 01/06/1987 |
| 4633554 | Method for repairing a steam turbine or generator rotor This is a method for repairing low alloy steel steam turbine (both high pressure and low pressure sections) or generator rotors. The defective section of the original rotor is removed and a replacement end is used, with mating attachments machined on the ... | 01/06/1987 |
| 4633056 | Method for manufacturing special-section tubes for tubular heat exchangers and tubes provided by such method A method for manufacturing special-section tubes having an oval cross section and a cross web for tubular heat exchangers by gradually profiling a metal strip and then joining the rims together substantially in the longitudinal direction of the tube.... | 12/30/1986 |
| 4629861 | Method of affixing an aluminum rupture disc assembly to an aluminum casting A method of affixing an aluminum rupture disc assembly to a 356 aluminum alloy heat-treated aluminum casting is disclosed wherein the rupture disc is of 1100 aluminum alloy, the disc is welded to a tubular member of 2219 aluminum alloy which in turn is fi... | 12/16/1986 |
| 4601151 | Welded roof support A building roof, having an optimum strength to weight ratio, and method of constructing the roof wherein a horizontally disposed roof deck assembly particularly adapted to provide diaphragm shear strength and shear stiffness is formed comprising: a sheet ... | 07/22/1986 |
| 4595368 | Instructional apparatus for underwater welding Disclosed herein is an instructional apparatus for underwater electric welding. The workpiece to be welded is clampable to a submergible bench mounted in a water tank on a power adjustable bench controllable by the trainee's feet while his hands are locat... | 06/17/1986 |
| 4575611 | Method of joining pipes A method of replacing a defective circumferential butt joint in a metal pipe is disclosed. An annular metal bridge ring, having a smaller wall thickness than the pipe but the same inside diameter, is positioned coaxial with the pipe in the relatively wide... | 03/11/1986 |
| 4572936 | Submerged arc welding process In a submerged arc multiple wire welding system, only one or two of the welding wires used are over or microalloyed wires. The other wires are commercially available unalloyed or low-alloyed solid wires. The process produces a weld metal which has unexpec... | 02/25/1986 |
| 4570051 | Enclosing a gas in a nuclear reactor fuel rod A method and system for enclosing a gas at a preselected pressure in a nuclear reactor fuel rod having two ends open to its interior. Hermetically enclose each end in a separate airtight chamber. Introduce the gas into the first chamber and open the secon... | 02/11/1986 |
| 4561059 | Microprocessor controlled welding apparatus A microprocessor-controlled arc welding power supply is disclosed. A silicon controlled rectifier ("SCR") bank is used to generate a direct current arc welding current under program control. Positive sychronization is provided by the microprocessor using ... | 12/24/1985 |
| 4556778 | Arc welding at high part speeds A method of joining together two relatively thin work pieces by arc welding is disclosed. The work pieces are rotated relative to a welding electrode so that the welding electrode is moved at relatively high speed over a path of contact between the work p... | 12/03/1985 |
| 4544825 | Adaptive control system for welding inverted seams Method and apparatus for welding edge joints such as turbine blades and the like, including adaptive tracking circuitry for maintaining the center of oscillation of the welding electrode substantially aligned with the center of the workpiece as the electr... | 10/01/1985 |
