Did You Know...
...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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4876432 | Method for controlling a penetration bead A method for controlling a penetration bead, in an automatic one-side gas shielded arc welding wherein the backing material is adhered to the back of work pieces along a weld line and the welding is effected automatically from the surface side of the work... | 10/24/1989 |
| 4721844 | Electric arc welding process for filling a weld groove to a predetermined extent In order to maintain the degree of filling of weld seams constant, especially those seams having a changing size of the cross section of the weld groove, in arc welding, the spacing of the welding gun from the workpiece is kept constant, the welding amper... | 01/26/1988 |
| 4436981 | Vertical down welding process by gravity arc welding and welding machine therefor A vertical down welding process by gravity arc welding, in which a guide rail 5a is disposed aslant upwardly at an inclination angle θ1 of 40° to 60° to a vertical weld line 3 and, while a holder 6 of a welding rod 4 is brought down along th... | 03/13/1984 |
| 4394559 | Arc welding method An arc welding method in which with a welding electrode being oscillated within the groove in the width direction thereof, the movement of the electrode in the upright or vertical direction is controlled to always maintain the arc length constant. The gro... | 07/19/1983 |
| 4316076 | Automatic speed control for seam welding A welding machine for use in connection with seam welding a pair of metal parts which are positioned to form a welding groove, and wherein the groove width undesirably varies at random due to improper part positioning or deviations from desired tolerance.... | 02/16/1982 |
| 4296306 | Method of welding corrugated metallic materials In an automatic arc welding method for welding metallic materials having a vertically curved weld line, a change in the arc voltage is compared with a arc length setting voltage and the resulting difference signal is used to control the vertical position ... | 10/20/1981 |
| 4248371 | Welding machine A welding machine can form continuous welds of three hundred and sixty degrees on workpieces which are rotated through angles of less than three hundred and sixty degrees by moving the welding torch of that welding machine in one direction circumferential... | 02/03/1981 |
| 4234777 | Programmed welding machine with weld head speed override A welding machine includes a programming device to move a welding head relative to horizontal main X and Y axes, and to rotate the head about a vertical C axis. A sensor is connected to rotate with the welding head on a rotator. A sine cosine resolver is ... | 11/18/1980 |
| 4232209 | Apparatus for welding of stiffeners or the like on a plate Apparatus for welding a stiffening member or the like to a plate in which a box is provided having an opening in one wall thereof through which the stiffening plate enters the box. A plurality of guides are mounted to the box for holding welding rods in p... | 11/04/1980 |
| 4118620 | Computerized system for translating a torch head A computerized system for translating a torch head tip at a constant travel speed along a contoured workpiece including a driven skate characterized by an elongated bed, a pair of independently pivotal trucks connected to the bed in supporting relation th... | 10/03/1978 |
| 4008384 | Welding apparatus A system for supporting, guiding and controlling a welding head to maintain the welding head normal to the instantaneous surface contour of overlapping, convoluted metal sheets to weld the same together. The system is capable of being supported on the con... | 02/15/1977 |
