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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7633032 | System and method for clamping and resistance welding An improved spot welding system for clamping and welding a plurality of workpieces at predetermined datum locations includes a clamping element, and at least one electrode. The preferred electrode(s) and element are concentrically alignable during engagement, and co... | 12/15/2009 |
| 7170025 | Welding device IMPROVED RESISTANCE WELDING DEVICE that includes a mobile electrode in a support assisted by a spring, gas cylinder or expansion element, allowing its movement on being compressed so that the time lapse for the welding is sufficiently long to be effective, without a... | 01/30/2007 |
| 7126078 | Sub-micron adjustable mount for supporting a component and method An arrangement is provided including an electrode extending to an electrode tip for contacting a workpiece. A welding configuration of the electrode tip is established by exposing the electrode tip to a selected welding environment for use in forming a weld having a... | 10/24/2006 |
| 7075028 | Sub-micron adjustable mount for supporting a component and method Attaching an attachment surface of an electrically conductive workpiece to an electrically conductive support surface is described. In one aspect, a biasing force is distributed at least partially around a weld region of the workpiece to urge the attachment surface ... | 07/11/2006 |
| 6770834 | Welding machine An improved apparatus and method for the prevention of deformation and buckling of metal plates during welding processes is disclosed. The improved apparatus and method are used to apply pressure to a welded seam created between two metal plates during the welding p... | 08/03/2004 |
| 6191383 | Welding device A device for mutually connecting by laser welding of sheet-metal objects laid flat against each other at least in determined zones, for instance two or more flat or previously profiled plates, for instance stainless steel or other objects for mutual conne... | 02/20/2001 |
| 6069338 | Method and apparatus for controlling spot welding robot The disclosed spot welding robot controlling method and apparatus is able to carry out an operation for pressurizing a spot welding gun without a dead time of a spot welding robot which has the spot welding gun driven by a fluid pressure. The control meth... | 05/30/2000 |
| 4831228 | Electrical resistance welding guns having workpiece clamping and independent electrode biasing An electrical resistance welding gun includes a hydraulically or pneumatically actuated clamping device for forcing workpieces into contact with one another, and a device for preloading and maintaining loaded contact between welding electrodes located on ... | 05/16/1989 |
| 4760242 | Fused eyeletting machine A machine for setting eyelets and the like in printed circuit boards includes a generally U-shaped frame having a pair of spaced-apart support arms defining a workpiece receiving zone therebetween, a first tool movably mounted in one of the support arms, ... | 07/26/1988 |
| 4420673 | Electrodes for use in the extrusion-fusion welding of lead parts through an aperture in a battery case and method of extruding, fusing and forging lead connections in battery cases A novel method for producing a homogenous weld exhibiting a superior grain structure, higher strength, and superior durability, using an extrusion-fusion type battery intercell welder having a novel electrode construction which provides improved current c... | 12/13/1983 |
| 4368373 | Apparatus for fabricating through-the-partition battery connections An extruder and electrode assemblage for interconnecting the upstanding lugs of plate straps connected to the positive and negative grids of battery cell units through apertures provided in partitions, separating the cell units of a battery from each othe... | 01/11/1983 |
| 4346282 | 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 ... | 08/24/1982 |
| 4296303 | Method for making intercell connections in multi-cell storage battery In an intercell connection of a multi-cell storage battery of the type having, in each unit cell separated by at least a partition wall of battery cell having an opening for said intercell connection, a pair of upstanding connectors integral with straps e... | 10/20/1981 |
| 4166210 | Electrodes for use in the extrusion-fusion welding of lead parts through an aperture in a battery case The present invention provides a novel electrode construction for use in extrusion-fusion type battery intercell welders, which alters the current carrying characteristics of the electrodes and produces a homogeneous weld exhibiting a superior grain struc... | 08/28/1979 |
| 4015098 | Apparatus for making intercell connectors by an extrusion-fusion technique Improved extrusion-fusion-type intercell connectors and process involving: casting the plate strap lugs to be welded from a hypoeutectic lead-antimony alloy containing at least about 2 percent by weight antimony; initially extruding the lugs into contact ... | 03/29/1977 |
| 4013864 | Apparatus for fabricating through-the-wall battery connectors An apparatus for automatically connecting battery plate units of adjacent cells through apertures in partitions between adjacent cell chambers of battery cases with said connection being effected by pressing lead projections of adjacent battery plate unit... | 03/22/1977 |
