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| Number | Title | Issue Date |
| 7399942 | Method for projection bonding of telescoped tubes A pair of tubes are provided, one of greater diameter than the other so that the tubes can be telescoped together. An annular inward facing projection is formed on the outer tube for contact with the outside surface of the inner tube when the tubes are telescoped to... | 07/15/2008 |
| 7352101 | Skew shape variable laminated iron core and method of manufacturing the same In a laminated iron core in which plural iron core pieces are laminated through caulking projections and caulking holes in which the caulking projections are fitted, and in the iron core pieces except a lowermost layer, the caulking projections and the caulking hole... | 04/01/2008 |
| 7197933 | Ultrasonic sensor for controlling the process during resistance spot welding A sensor carrier is provided that has at least one oscillating element (32) that introduces ultrasonic waves into an area to be examined and/or receives ultrasonic waves coming from the area to be examined, whereby the oscillating element (32) is locat... | 04/03/2007 |
| 7128621 | Connecting structure and its connecting method, and rotating machinery and alternating current A connecting structure in which the electric cable having an insulated coating and the electrically conductive member with non-insulated coating are connected through a connecting terminal having a junction support member by applying an electric current, heating and... | 10/31/2006 |
| 7126077 | Resistance welding of high strength steels The formation of spot welds in high strength steel workpieces is improved by using welding electrodes with annular, or donut shaped welding tips for the formation of the molten metal weld pool at the weld site. The annular poll solidifies to form an annular weld nug... | 10/24/2006 |
| 7053330 | Projection weld-bonding system and method A method of welding and a projection weld bond system is disclosed. A first workpiece is provided that is made of a material that conducts electricity, and a second workpeiece is provided that is made of a material that conducts electricity and has a plurality of pr... | 05/30/2006 |
| 6806436 | Series spot welding method, device for carrying out the method, and electrodes employed in the method or the device In a series spot welding method, leading edge portions of pressed electrode tips crush bearing surfaces that are one stage higher than a general portion. Thereby, the bearing surfaces are first deformed into a spherical shape. The bearing surfaces thus deformed into... | 10/19/2004 |
| 6635843 | Strip connecting apparatus and method therefore To provide a strip connecting apparatus and a method therefor which are less costly, short in welding time and high in welding quality. A strip connecting apparatus is provided with: a surface coating removing device for removing insulative surface coatin... | 10/21/2003 |
| 6294751 | Method of electrically welding a part such as a screw or a bolt onto a bore in a composite metal sheet A method of electrically welding a part such as a bolt around a bore of a composite sheet comprising an intermediate layer of a substantially insulating material disposed between two metal layers. Said sheet is pre-heated in the vicinity of said bore in o... | 09/25/2001 |
| 5793011 | Automatic assembling system of galvanized steel sheet by spot welding A method and apparatus for continuously spot-welding galvanized steel sheets overlapped to be bonded by way of a spot welding machine having a pair of electrodes. The galvanized steel sheets clamp a resistance increasing material including a spacer to ens... | 08/11/1998 |
| 5552573 | Resistance welding process for aluminum and aluminum alloy materials A resistance welding process for aluminum and aluminum alloy materials for enabling the remarkable improvement of the electrode life comprises the steps of preparing an insert material having the overall thickness of 0.02 to 1 mm including a sheet-like co... | 09/03/1996 |
| 5484976 | Fusing methods and apparatus for use in making dynamo-electric machines In the performance of fusing operations which involve the application of force and heat to a workpiece, the heat being generated at least in part by electrical resistance heating resulting from passage of an electrical current through an electrical circui... | 01/16/1996 |
| 4922075 | Electric resistance welding for zinc plated steel plate An electric resistance welding method for welding zinc plated steel plates is disclosed. The zinc plated steel plates having at least one surface covered with a plating layer composed of mainly zinc can be welded by the present invention efficiently while... | 05/01/1990 |
| 4904842 | Blowhole.multidot.pit preventing agent and arc-welding method using the same In lap joint welding of galvanized sheets, the occurence of blowhole and pit is prevented by applying a blowhole.multidot.pit preventing agent comprising a phosphorus compound as an effective ingredient prior to the arc-welding.... | 02/27/1990 |
| 4902867 | Method of joining an insulated wire to a conductive terminal A high heat resisting wire (5) is made of amide-imide-coated wire, and a conductive terminal (4) is made of Cu or Cu alloy such as brass P-containing solder, BAg-1, BAg-2 are used as joining assistant (4). A high heat resisting wire (5) is made of an amid... | 02/20/1990 |
| 4481401 | Process for welding coated plates Interposing a coating-compatible strip material between a coated plate to be welded and a welding electrode that contacts that plate during the welding operation so that a coating-compatible film is applied to the plate during the welding process to preve... | 11/06/1984 |
| 4396819 | Method of forming a conductive connection A method of forming a conductive connection between predominantly miniature members by pressing the members together and heating by means of electrodes through which three successive pulses of electric current are passed. First and second pulses act to br... | 08/02/1983 |
| 4379961 | Method of making an apparatus containing a diaphragm The invention relates to a method for making a thin walled diaphragm unit of the type used in pressostats and thermostats. The method involves attaching a ring element to one end of a tubularly shaped diaphragm element which may have the bellows forming c... | 04/12/1983 |
| 4365134 | Method of resistance welding After measuring the bulk resistance the surface of high strength low alloy steel material is treated to form a high resistance coating on its surface. When resistance welding the material the coating permits weld formation without significant expulsion or... | 12/21/1982 |
| 4336437 | Method of extrusion-fusion welding of lead parts through an aperture in a battery case The present invention provides a novel method of extrusion-fusion welding of lead parts through an aperture in a battery case which uniformly controls the area of contact between members to be welded at the completion of the extrusion process in order to ... | 06/22/1982 |
| 4195215 | Weldable sealant forms The specification discloses methods of joining two or more metal members together by combinations of innovative sealants, welding and/or cure heat. More particularly, it relates to methods and materials for improving the sealing, welding, and spacing of m... | 03/25/1980 |
| 4122325 | Method of joining two sheet metal parts Metal parts are spot welded together. To prevent corrosion of the parts a thixotropic, non hardening, corrosion resistant material including a solvent and having a negligible gravity flow at temperatures less than about 400° F to 440° F and forming a he... | 10/24/1978 |
| 4092514 | Method for welding through paint Relates to a method of and apparatus for electric welding through insulation coatings, such as paint, on metallic surfaces by directing a vapor jet of paint solvent upon a selected area of a painted metal surface to first soften and then vaporblast the so... | 05/30/1978 |
| 4060888 | Method of improving ohmic contact through high-resistance oxide film A novel method is described for improving the ohmic contact through a relatively high electrical-resistance oxide film formed on at least one of two materials joined together to provide a low-resistance electrical junction. A current pulse of sufficient m... | 12/06/1977 |
| 4048463 | Method of joining aluminum to aluminum A method of welding aluminum to aluminum by thermal resistance welding, providing good electrical and mechanical characteristics. The method uses special electrodes for thermal heat that are hard and have a high electrical resistance, such as molybdenum o... | 09/13/1977 |
| 4037073 | Resistance welding of sheet metal coated with layers The invention relates to a method for the resistance welding of sheet metal coated with layers, wherein firstly electrical contact is established between the sheets to be interwelded and between the welding electrodes and said sheets, and subsequently wel... | 07/19/1977 |
| 4015326 | Method of mounting a strain gage to a surface A strain-deformable wire resistance strain gage is cemented to a ship's propeller or turbine blade, and covered with a water vapor curable silicone plastic polymer protective layer in an unset state; and metal screen overlay is track-welded with the aid o... | 04/05/1977 |
| 4009362 | Process and apparatus for welding sheet metal coated with layers Apparatus for the connection of sheet metal panels coated on at least one surface with an insulating layer by the electrical fusion of a metal, wherein the improvement comprises the steps of supplying an electric pre-warming current to only the upper most... | 02/22/1977 |
| 3989919 | Resistance welding of sheet metal covered with non-metallic layers The invention relates to welding of sheet metal covered with non-metallic layers, and relates more particularly to a method for the spot- or roller seam- welding of sheet metal covered with non-metallic layers by removing the layer from the zones to be we... | 11/02/1976 |
| 3988561 | Weld-bonded titanium structures Structurally stronger titanium articles are produced by a weld-bonding technique comprising fastening at least two plates of titanium together using spot-welding and curing an adhesive interspersed between the spot-weld nuggets. This weld-bonding may be e... | 10/26/1976 |
| 3988562 | Electrical resistance welding of coated sheet metals The invention provides a method for the electrical resistance welding of coated sheet metals, in which welding current is fed to at least one of the coated sheets indirectly through the metal layer thereof and contact is established between blanc areas th... | 10/26/1976 |
| 3978308 | Welding machine A pneumatically operated welding machine particularly useful for welding small diameter wires onto pins for electronic circuitry is described. In such welding an insulated wire is fed through a hollow upper electrode for welding between the electrode and ... | 08/31/1976 |
| 3967091 | Capillary flow weld-bonding Structurally stronger titanium articles are produced by a weld-bonding technique comprising fastening at least two plates of titanium together using spot-welding and applying a bead of adhesive along the edge of the resistance spot-welded joint which, upo... | 06/29/1976 |
