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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 6894251 | Method for welding on stress-sensitive materials For stress-crack-sensitive materials, a weld pool is formed on a substrate. The weld pool is simultaneously plastically strained and cooled while the temperature of the hot metal weld pool lies substantially within a predetermined range in which hot cracking typical... | 05/17/2005 |
| 6462299 | Method of joining strips in a steel strip continuous processing line An abutting end portions of the strips are heated from below to a temperature range where annealing effects are obtained by means of a movable heating apparatus which performs high-frequency induction heating and a laser beam (or arc or electron beam) is ... | 10/08/2002 |
| 6069334 | Electroslag strip overlay method An apparatus and method for depositing an overlay material onto a metal surface. An electroslag strip overlaying process which distributes flux through a trailing flux tube and a forward flux tube eliminates many of the problems associated with electrosla... | 05/30/2000 |
| 5846057 | Laser shock peening for gas turbine engine weld repair A crack weld repair and method, particularly, for a gas turbine engine blade or other metallic component in the engine, providing a metallic substrate, a metallic filler bonded onto a substrate bond surface on the metallic substrate, and a region having d... | 12/08/1998 |
| 5372297 | Drum cathode for use in the production of metal foils and a method of producing the same The present invention provides a new and improved titanium metal drum cathode for use in the production of metal foils and a novel method of making the same. The method includes the steps of welding together the ends of a strip of titanium that has been r... | 12/13/1994 |
| 5296675 | Method for improving high temperature weldments A TIG weld produced from a rapidly solidified dispersion strengthened aluminum base alloy exhibits attributes of the alloy's microstructure extant prior to formation of the weld. TIG welding power is adjusted to minimize energy input into the weld. An arc... | 03/22/1994 |
| 4880956 | Device for radial machining and welding element A device for radial machining and welding of a tubular body, said device comprising a tool support which can be placed around the tubular body and including four rollers assuring its guiding in rotation. The support comprises a main body of relatively mas... | 11/14/1989 |
| 4545519 | Method and apparatus for preventing tip sticking during welding operation A method is provided for preventing tip sticking during the spot welding of workpieces including ultrasonic vibratory spot welding. The welding apparatus includes a welding tip and a complimentary anvil between which the workpieces to be welded may be ins... | 10/08/1985 |
| 4421971 | Arc welding process An arc welding process for welding a circumferential surface of a fixed pipe etc. by shielding a work part with a shield gas is provided. It is welded by a flat arc formed in a flat sectional view by simultaneously ejecting a gas from nozzles (19) to the ... | 12/20/1983 |
| 4309587 | Horizontal electro-slag welding process for surfacing Surfacing is conducted with horizontal electro-slag welding by using a strip electrode, and by applying a magnetic field, having component perpendicular to a base metal, to a molten metal and slag pool to control the flow of the molten pool.... | 01/05/1982 |
| 4228339 | Method of hardfacing tool joints An improved method for hardfacing tool joints for earth boring drill pipe. Annular bands of hardfacing are applied by an apparatus that creates an arc between a consumable steel wire and the tool joint. The steel wire is reciprocated across the width of t... | 10/14/1980 |
| 4190760 | Welding apparatus with shifting magnetic field The present invention relates to a welding process and apparatus. More particularly, the invention relates to a welding process and apparatus for performing welding in various positions characterized in that a shifting magnetic field is generated in the v... | 02/26/1980 |
| 3959619 | Method of drawing-in or flattening dents in sheet metal One side of a source of electrical energy is connected to a dented metal sheet and a hammer electrode connected to the other side of the source is successively brought into instantaneous contact with a multiplicity of locations spaced apart over the dent.... | 05/25/1976 |
