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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 |
| 7291807 | TIG welding equipment and TIG welding method TIG welding equipment includes a first articulate robot having a first arm, a TIG torch holding member for holding a TIG torch at a specified position so that the TIG torch can perform a weaving operation, and a filler wire guide moving member formed so as to surrou... | 11/06/2007 |
| 7005607 | Welding method, welding device, welded joint, and welded structure A welding method is disclosed for butt welding a first base material 1 and a second base material 2 with each other. To also permit stable and efficient formation of a bead in the form of a fillet weld on a back side of a groove by conducting arc weldi... | 02/28/2006 |
| 6927360 | Method for continuously regulating or tracking a position of a welding torch or a welding head The invention describes a method of continuously controlling and tracking a position of a welding torch (10) and welding head relative to a weld seam to be produced on a workpiece (16), whereby the welding torch (10), spaced at a distance apart ... | 08/09/2005 |
| 6822195 | Automated weld location system for vehicles An automatically weld locating system locates welds on a subassembly including first and second components. First and second finite element analysis models of the first and second components are retrieved. Edges of the first component are located. An outline of the ... | 11/23/2004 |
| 6627848 | Guide device for electric arc torch welding A guide device for an electric arc torch having an insulator surrounding a contact tip through which a welding wire extends includes a sleeve having a first end for receiving the insulator and a second end through which the welding wire extends and which ... | 09/30/2003 |
| 6559405 | Positioning device for welding electrode A positioning device for positioning a welding electrode near objects to be welded. A laser projects a light ray which is affixed to, and has a known spatial relationship with, the electrode. The laser is adjusted as to position, until the light ray strik... | 05/06/2003 |
| 6155475 | Method for automatic multi-layer welding In a method for automatic multi-layer welding of a joint formed by two joint surfaces according to which method the contour of the joint in a number of cross-sections is established by means of a sensor emitting signals representative of the contour of th... | 12/05/2000 |
| 4857700 | Control apparatus for automatic arc welding machine The arc current is divided into two areas each corresponding to a 1/4 period of weaving, the two areas are compared with each other, and an area corresponding to a predetermined time period at the end portion of the larger area is substrated from the larg... | 08/15/1989 |
| 4816641 | Automatic arc-welding method An automatic arc-welding method, which comprises, when welding two objects to be welded together by means of a welding wire along a groove formed between the objects to be welded, continuously determining by calculation a target welding current, with whic... | 03/28/1989 |
| 4816640 | Automatic arc-welding method An automatic arc-welding method, which comprises, when welding two objects to be welded together by means of a welding wire along a first groove formed between the objects to be welded on a first side thereof, continuously determining by calculation a tar... | 03/28/1989 |
| 4785155 | Automatic welding machine path correction system A path correction system of an automatic welding machine has means for differentiating welding current values at respective left and right positions of a torch when weaving is performed, and means for sensing welding current when a value obtained from the... | 11/15/1988 |
| 4728774 | Automatic welding machine correcting for a varible groove width An automatic welding machine which welds two materials separated by a groove that may be of varying cross-section along its length. Cross-sections at the two ends of the welding line are input by a variety of means. The machine then calculates an oscillat... | 03/01/1988 |
| 4704513 | Groove tracing control method for high-speed rotating arc fillet welding A groove tracing control method for a fillet welding effected by rotating a welding torch and thereby rotating an arc at a high speed. The groove tracing control of the welding torch is effected in accordance with variations in the voltage waveform of the... | 11/03/1987 |
| 4658112 | Welding control by power integration This invention relates to automatic welding of confronting edges of two bodies between which is a groove to be filled with a material and, more particularly, to conditioning, processing and use of control signals representative of an integration of the ab... | 04/14/1987 |
| 4639573 | Automatic groove tracing control method for arc welding A control method in which during arc welding a welding torch is moved in its axial direction so as to maintain the arc current or welding current at a predetermined value and thereby maintain the arc length constant and the torch is caused to weave in the... | 01/27/1987 |
| 4639575 | Three o'clock narrow groove welding apparatus A three o'clock welding apparatus, wherein a lateral butt welded joint is formed by carrying out welding in a narrow groove. The narrow groove is inclined with respect to the horizontal in such a manner that the center face of substantially parallel upper... | 01/27/1987 |
| 4633059 | Method and apparatus for welding line tracer control A relative weaving motion of a welding torch relative to a weld line is given to a welding torch, by way of composing a weld main path vector for a relative movement of the weld torch along the weld line and a swing vector for a relative movement of the w... | 12/30/1986 |
| 4621185 | Adaptive welding apparatus having fill control correction for curvilinear weld grooves An adaptive welding apparatus has an optical sensing system for detecting the cross sectional configuration of a weld groove by linearly scanning a monochromatic light source across the groove while viewing the reflected light with a raster scan type TV c... | 11/04/1986 |
| 4617504 | Positioning device The invention relates to an adaptive control tool holder for fixing to the end of the carrier of a robot, controlling the displacement of said end in accordance with a stored path. The tool holder defines a degree of freedom about an axis and a degree of ... | 10/14/1986 |
| 4608481 | Method of automatically controlling height of a weld bead A welding control method in which a deviation of a groove line or variation of a groove width is detected by utilizing the characteristics of a welding arc itself without using a separate sensor and a welding torch is caused to accurately follow the groov... | 08/26/1986 |
| 4590355 | Method of controlling multi-layer welding In the multi-layer welding of a joint of two pieces of metal to be welded by arc welding, the proper number of passes and the desired tracing positions of a welding torch for each layer are automatically established during the welding of the preceding lay... | 05/20/1986 |
| 4587398 | Weld line system and method for control A system and method for weld line profile control wherein an electrical quantity corresponding to the arc of a welding torch is detected and the deviation between the electrical quantity and a reference quantity is monitored so that correction movements o... | 05/06/1986 |
| 4577089 | Automatic welding machine The automatic welding machine has a pair of closely spaced magnetic rollers which grip the surface of a workpiece and which are driven to rotate the workpiece. The workpiece may rest on a support on the end of a double articulated arm. The driven rollers ... | 03/18/1986 |
| 4570049 | Band welding installation for joining plates, sheet bars, and bands A band welding installation includes a welding machine having a control device and a welding torch for joining ends of pieces in a band processing line transverse to the direction of the band run. At least two sensor units are coupled ahead of the torch f... | 02/11/1986 |
| 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 |
| 4540870 | Machine for electric arc welding and air carbon arc gouging on vertical curved or straight walls A portable machine for electric arc welding and air carbon arc gouging on vertical wall surfaces is disclosed. A table-mounted carriage arm carrying a vertical positioning assembly for welding nozzles or a gouging torch is driven horizontally around a ver... | 09/10/1985 |
| 4531192 | Apparatus and method for sensing a workpiece with an electrical arc Apparatus and method for sensing the topography of a workpiece with an electrical arc by measuring a parameter of the electrical arc signal as an electrode is scanned across the surface of the workpiece by a tool manipulator such as a multi-axis robot arm... | 07/23/1985 |
| 4525619 | Automatic weld line following method An automatic weld line following method for use with an arc welding method of welding a work by feeding a consumable electrode toward the weld line of the work through the tip of a welding torch and by oscillating the welding torch. The average and effect... | 06/25/1985 |
| 4508953 | Method of multi-layer welding A method of multi-layer welding in which the welding operation is performed according to a path of welding defined by interpolating a plurality of instructed points by a suitable line, the method being characterized by storing in a memory device the coord... | 04/02/1985 |
| 4495400 | Method and apparatus for positioning a welding torch in automatic electric welding This invention relates to automatic welding of confronting edges of two bodies between which is a groove to be filled with filler material and, more particularly, to conditioning, processing and use of control signals for automatic operation.... | 01/22/1985 |
| 4491718 | Template-matching adaptive control system for welding A template-matching adaptive control system for welding comprising noncontacting means for sensing the lateral profile of a weld joint while the welding electrode moves laterally across the joint, means for comparing the sensed lateral profile to a predet... | 01/01/1985 |
| 4485291 | Method for controlling the position of welding electrode in arc-welding with weaving An arc-welding method, which comprises: arc-welding objects of welding together along the line of a groove formed between said objects of welding by continuously moving a welding electrode along the line of said groove while reciprocating said welding ele... | 11/27/1984 |
| 4468695 | Robot A robot comprises a platform, a movable arm capable of moving to the platform for operation based on the information prestored in a memory, a working assembly provided movably to an end of the arm, means for detecting the deviation between a position for ... | 08/28/1984 |
| 4434352 | Arc welding method for automatically reversing a welding torch in the width direction of the groove at a set position In an automatic arc-welding method, which comprises: continuously moving a carriage along the longitudinal direction of a groove formed between the objects of welding; reciprocally moving in the width direction of the groove a welding electrode directed s... | 02/28/1984 |
| 4417126 | Method of controlling a weaving path of a welding torch in arc welding with a consumable electrode A method for controlling a weaving path of a welding torch to trace a welding line in consumable electrode arc welding, including: detecting in a rightward weaving stroke of weaving motion a welding current level IL1 at the left end position of... | 11/22/1983 |
| 4410786 | Method of aligning a welding torch with a seam to be welded and of welding such seam A method of locating and welding a seam with a welding torch includes the steps of swinging the welding torch transversely of its feed direction, moving the torch at an angle of up to 30° with respect to a preprogrammed torch path, operating the torch at... | 10/18/1983 |
| 4380695 | Control of torch position and travel in automatic welding To maintain control of arc position in travel along a predetermined welding path, wherein the arc or equivalent heat source is given at least a minimal lateral reciprocation, an electrical characteristic, such as current, is sampled to obtain a continuous... | 04/19/1983 |
| 4365132 | Welding apparatus for polygonal cross-sectioned tubing A welding apparatus which is designed to weld together tubular members having any exterior configuration. The welding electrode is mounted on mounting structure which in turn is movably mounted upon the periphery of a housing. The workpiece to be welded i... | 12/21/1982 |
| 4350868 | Follow-up control apparatus for controlling the movement of a welding weaving device A method and apparatus for follow-up controlling the weaving movement of a weaving device in consumable electrode type arc welding, in which welding currents at both ends of the left and right side of the weaving motion of the torch with respect to a weld... | 09/21/1982 |
| 4316075 | Automatic welding position control method, and device A welding method in which a pair of base metals are welded together by swinging the welding torch right and left, and a device for practicing the method. In the method, the arc current is continuously detected, and sampling pulses are formed in time slots... | 02/16/1982 |
