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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 |
| 7516634 | Electrohydraulic forming tool An electrohydraulic forming (EHF) tool having a pair of electrodes that can be used to generate a shockwave to facilitate forming a sheet metal blank against a forming die. The electrodes may be adjusted during the course of operation. This may be useful should cont... | 04/14/2009 |
| 7386938 | Method of joining hydroformed tubular members A hydroformed dovetail joint and method of joining tubular members includes a first hydroformed tubular member having a depression therein and a second hydroformed tubular member having an end. The end of the second hydroformed tubular member is disposed over the de... | 06/17/2008 |
| 7369140 | System, apparatus and method for subpixel shifting of sample positions to anti-alias computer-generated images A system, apparatus, and method are disclosed for modifying positions of sample positions for selectably oversampling pixels to anti-alias non-geometric portions of computer-generated images, such as texture, at least in part, by translating (e.g., shifting) shading... | 05/06/2008 |
| 7310990 | High-pressure press A high-pressure press includes a pressure vessel surrounded by a force-absorbing press frame. The high-pressure press also includes a detection structure for detecting changes in length of at least one column comprised in the press frame, the changes in length depen... | 12/25/2007 |
| 7284401 | Stent reducing system and device A system for reducing the diameter of a stent comprises a stent contracting assembly and a fluid source. The assembly comprises a plurality of contracting members that define a diameter reduction chamber for receiving a stent. When the chamber is in a pre-reduction ... | 10/23/2007 |
| 7284403 | Apparatus and method for performing a hydroforming process An apparatus and method for performing a hydroforming process cause either or both of the opposed end portions of the workpiece to be deformed to achieve desired shapes therein. Initially, a workpiece having a pair of end portions is disposed within a die cavity def... | 10/23/2007 |
| 7231793 | Warm hydro-forming device A warm hydro-forming device comprises: an upper mold and a lower mold respectively mounted to an upper mold die and a lower mold die; a lifting die installed to the lower mold die through a guide unit, an upper portion of the lifting die being connected to the upper... | 06/19/2007 |
| 7200935 | Work roll Improved work roll, particularly for use in closed gap rolling, has a composite structure comprising a cylindrical outer layer (14) made of steel, and providing the work surface of the roll, separated from a steel core (12) by an intermediate layer ( | 04/10/2007 |
| 7187510 | Method of magnetic transfer to flexible medium A signal such as a servo tracking signal is recorded on a flexible slave medium by magnetic transfer. When forming the flexible slave medium of a magnetic strip in a continuous length, the signal is recorded on the magnetic strip by patterned master magnetic transfe... | 03/06/2007 |
| 7172027 | Expanding tubing A method of expanding tubing downhole comprises providing a section of expandable tubing of a first diameter, and axially compressing the tubing to induce buckling, such that the buckled portion describes a larger second diameter. The resulting diametric expansion m... | 02/06/2007 |
| 7168497 | Downhole sealing A method of providing a downhole seal, such as a packer, in a drilled bore between inner tubing and outer tubing comprises: providing an intermediate tubing section defining a seal arrangement for engaging with the inner tubing; and radially plastically deforming th... | 01/30/2007 |
| 7127925 | Diaphragm support and a method for initial sealing in a pressure cell A press of pressure cell type, which comprises a press chamber in which a diaphragm device is arranged. The diaphragm device comprises a diaphragm which together with a press plate forms a pressure cell and is adapted to exert a forming pressure on a workpiece in th... | 10/31/2006 |
| 7125051 | Common-rail injection system for diesel engine A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can b... | 10/24/2006 |
| 7096699 | Multiple bladder internal tube expansion and method Method and apparatus for the production of a plurality of uniform expansions of a tube in a plurality of tube supports simultaneously. A plurality of tubes are expanded in apertures of tube supports in a repetitive manner, each tube being expanded into the plurality... | 08/29/2006 |
| 7090478 | Apparatus and method for manufacturing an anisotropic formed body An apparatus for manufacturing an anisotropic formed body in which functional, magnetic fine particles are oriented in a specific direction within a matrix and in which anisotropy is given to properties attributable to the functional fine particles. The apparatus al... | 08/15/2006 |
| 7036346 | Apparatus for exposing a pipeline to high internal pressure An apparatus for exposing a pipeline to a high internal pressure of the order of 1000 to 15000 bar, having at least a first, substantially stationary receiving device for a first end of the pipeline and a second receiving device for a second end of the pipeline, whe... | 05/02/2006 |
| 7024912 | Deformation of thin walled bodies A thin walled body such as a container is gripped at a holding station and tooling is engaged to deform the wall of the body at a predetermined zone. The predetermined wall zone is co-aligned with the tooling by means of co-ordinated movement of the tooling (typical... | 04/11/2006 |
| 7007362 | Method of forming a slip joint A method of forming a slip joint includes providing a forming mandrel having a plurality of axially extending external splines, placing an inner tube circumferentially about the mandrel, and applying radially inward pressure on the inner tube to deform the inner tub... | 03/07/2006 |
| 7004000 | Deformation of thin walled bodies A thin walled body such as a container is gripped at a holding station and tooling is engaged to deform the wall of the body at a predetermined zone. The predetermined wall zone is co-aligned with the tooling by means of co-ordinated movement of the tooling (typical... | 02/28/2006 |
| 7003999 | Deformation on thin walled bodies A thin walled body such as a container (1) is gripped at a holding station and tooling (10) is engaged to deform the wall of the body at a predetermined zone. The predetermined wall zone is co-aligned with the tooling (10) by means of coordinate... | 02/28/2006 |
| 7004257 | Apparatus and methods for separating and joining tubulars in a wellbore The present invention provides methods and apparatus for cutting tubulars in a wellbore. In one aspect of the invention, a cutting tool having radially disposed rolling element cutters is provided for insertion into a wellbore to a predetermined depth where a tubula... | 02/28/2006 |
| 6990840 | Conjoining apparatus using electromagnetic forming A conjoining apparatus using electromagnetic forming includes a field shaper for concentrating a magnetic field to a conjoining working object, a coil for generating and applying the magnetic field to the field shaper such that the field shaper can form a reactive f... | 01/31/2006 |
| 6976539 | Tubing anchor A method of installing a liner in a drilled bore below a section of bore previously lined with casing comprises the steps of: running a length of liner into the bore such that at least an upper end of the liner is positioned in overlapping relation with at least a l... | 12/20/2005 |
| 6968718 | Method for electromagnetically forming metallic member and metallic member formed by electromagnetic forming A method for electromagnetically forming a metallic member includes deforming an end of a metallic member by electromagnetic forming, pressing the outer surface of the deformed end on the surface of a mold to form a flange having a predetermined shape at the end of ... | 11/29/2005 |
| 6948225 | Hydroformed tubular structure and method of making same A method and apparatus is provided for strengthening tubular members and attaching components to the tubular member using a hydroforming process. In one embodiment, the outer tube has a non-circular inner surface and the inner tube has an outer surface with a shape ... | 09/27/2005 |
| 6931776 | Apparatus for the section-wise autofrettage of gun barrels An apparatus for the section-wise autofrettage of gun barrels (22) by a hydraulic pressure generated inside the barrel. The apparatus (1, 1′, 1″) comprises a mandrel-shaped insert (2, 2′, 2″) inserted into the barrel (22) from the... | 08/23/2005 |
| 6923261 | Apparatus and method for expanding a tubular A method of isolating a section of downhole tubing comprises: running a length of expandable tubing (20) into a tubing-lined borehole (12, 14) and positioning the expandable tubing (20) across a section of tubing to be isolated; deforming at lea... | 08/02/2005 |
| 6923030 | External activation mechanism for pressurized forming cavity A mechanical mechanism is disclosed for supplementing the action of a pressurized working gas in hot blow forming of a sheet material. Opposing complementary heated forming tools grip the sheet material and form a shaping surface on one side of the sheet and a gas p... | 08/02/2005 |
| 6920935 | Expandable downhole tubing A tubing coupling method is provided. In one aspect, the method comprises providing a length of expandable tubing and a length of larger diameter non-expanding tubing, connecting an end portion of the expandable tubing to an end portion of the non-expanding tubing, ... | 07/26/2005 |
| 6823709 | Synchronized rivet gun system A rivet gun system includes a rivet gun frame having two ends. A die is coupled to one end, and a force sensor coupled to the rivet gun frame. The force sensor detects force applied to the die and generates a force signal in response to the force. A holding coil def... | 11/30/2004 |
| 6802195 | Isostatic press and process of using same An isostatic press and the process of using same is disclosed and claimed. The isostatic press includes a yoke; a bottom cover affixed to the yoke; a top cover affixed to the yoke; and, a body moveable between a first position and a second position. A process for is... | 10/12/2004 |
| 6684475 | Method of making large volume hollow bodies A large dimension hollow body such as a fuel tank is formed from cold deformable sheet metal by cutting a sheet metal blank of a conformation matching the hollow structure to be formed and which has a nonuniform cross section between its ends. The sheet m... | 02/03/2004 |
| 6639962 | Preventive maintenance method and apparatus of a structural member in a reactor pressure vessel A preventive maintenance method and apparatus for a structural member in a reactor pressure vessel according to the present invention reduce a tensile residual stress on a surface of the structural member by impinging a water jet from a nozzle onto a plan... | 10/28/2003 |
| 6619094 | Method and apparatus for forming a metal sheet under elevated temperature and air pressure A drawing mold has a contoured mold surface receiving a metal sheet thereon. A tensile drawing machine applies a drawing tension to the sheet edges to deform the sheet onto the mold. Heated pressurized air supplied through air holes in the mold surface fo... | 09/16/2003 |
| 6345083 | Preventive maintenance method and apparatus of a structural member in a reactor pressure vessel A preventive maintenance method and apparatus for a structural member in a reactor pressure vessel according to the present invention reduce a tensile residual stress on a surface of the structural member by impinging a water jet from a nozzle onto a plan... | 02/05/2002 |
| 6343496 | Can shaping apparatus and method A method and apparatus for providing a contoured design confirguration in the wall of an open ended container workpiece employs plural molds on a rotating turret an which a plurality of molds are provided with each mold having an inwardly facing wall havi... | 02/05/2002 |
| 6299709 | Bow-formed bumper, a method of forming a bow-formed bumper, and a method of hydroforming a blank therefor A blank with a closed profile is made of hardenable sheet steel and is hydroformed when hot. The tool is cooled and the blank is heated to a hardening temperature and formed so fast that it will not have time to harden before it contacts the tool and beco... | 10/09/2001 |
| 6257121 | Piston with piston rod The piston (1) has a ball receptacle (14) for the rod head (4) of the piston rod (2) of a swash plate compressor. For absorbing particularly high pressures the rod head (4) has a relatively large diameter, so that the ball receptacle (14) extends close to... | 07/10/2001 |
| 6176113 | Inflatable device for removing dents in components of vehicles An inflatable device for simply and efficiently repairing a dent, crease, or other surface irregularity in a component of a vehicle, or, alternatively, for simply and efficiently supporting, raising or moving an object to a desired position. The device in... | 01/23/2001 |
| 6128935 | Hybrid matched tool-electromagnetic forming apparatus incorporating electromagnetic actuator The present invention includes an apparatus for forming a metal work piece into a target shape, the apparatus comprising: (a) an male mold portion having a mold side and a back side; (b) a female mold portion having a mold side and a back side; the mold s... | 10/10/2000 |
