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| Number | Title | Issue Date |
| 7500592 | Storage tank construction Large tanks are built by welding pre-formed plates in operations near the ground. An annular concrete base with extended lifter pads is poured. Floor plates are lifted using lifting nuts, are placed on compacted sand and river gravel and are welded laterally. Periph... | 03/10/2009 |
| 7389669 | Mechanical stress improvement process A process for reducing residual tensile stresses in high nickel-chromium alloy nozzle safe-end welds of pressurized water reactor nuclear pressure vessels such as are found at the reactor vessel inlet and outlet nozzles and the pressurizes surge, spray, safety and r... | 06/24/2008 |
| 7103956 | Method of fabricating a spherical cavitation chamber A method of fabricating a spherical cavitation chamber. Depending upon the chamber's composition and wall thickness, chambers fabricated with the disclosed techniques can be used with either low or high pressure systems. During chamber fabrication, initially two sph... | 09/12/2006 |
| 7042695 | Plastic container with electric dissipation capability The invention relates to a multi-layer plastic container (10) for the storage and transport of materials in particular with an explosion risk, comprising at least two layers of plastic, whereby the inner layer (14) is not electrically conducting and th... | 05/09/2006 |
| 7013551 | Method or manufacturing thin wall isogrid casings In one aspect of the invention a method of manufacturing a thin wall isogrid casing by a chip machining process comprises the steps of: positioning a substantially cylindrical casing (10) on a support (20); the support having a substantially continuous... | 03/21/2006 |
| 7011779 | Poly-steel double wall tank An improved double wall tank has two or more threaded fittings, with a steel outer tank and a thermoplastic inner tank. The inner tank is formed within the outer tank by rotational molding. The inner tank is bonded to the outer tank in an area of the fittings, but i... | 03/14/2006 |
| 6960078 | Liquid heating cooker A liquid heating cooker including a box-shaped vat having a bottom panel A, rear panel B, left panel C, right panel D, and holding panel E, which are separated by welding lines F to I. The welding lines F and G are provided on a front wall portion, a bottom wall por... | 11/01/2005 |
| 6958260 | Hydrogen gettering system A method, system and materials for use in hydrogen gettering in conjunction with microelectronic and microwave components that are generally hermetically sealed in an enclosure typically referred to as a “package”. Gettering materials that can be used include ti... | 10/25/2005 |
| 6955288 | Metallurgically bonded layered article having a curved surface A layered article having a curved surface made of a supporting metal metallurgically bonded to a supported metal. ... | 10/18/2005 |
| 6901770 | Removable filter dryer with capacity indicator for vapor compression systems A refrigerant filter/dryer assembly isolates, removes, and replaces a filter/dryer core, and allows the vapor-compression heat pump system to continue to operate while the filter/dryer is being replaced. The refrigerant flow is automatically by-passed and the filter... | 06/07/2005 |
| 6800150 | Manufacturing process for an element of a chemical device comprising a support part in metal and an anticorrosion metallic coating The aim of the present invention is a manufacturing process for assembly parts (101, 102, 111, 112) for the manufacture of elements of chemical devices (100), comprising the fixation of an anticorrosion metallic coating (31, 32) on an unprocesse... | 10/05/2004 |
| 6792678 | Method of manufacturing a gas sensor An improved manufacturing method for a gas sensor is provided which is capable of establishing a required hermetic seal in a body of the gas sensor. The method includes preparing a sensor assembly including a housing, an air cover, an insulation porcelain, and a sen... | 09/21/2004 |
| 6715668 | Fusion welded liquefiable gas cylinder with overpressure protection heads and method for making the same A liquefiable gas pressure cylinder and method for making the same with the cylinder including a cylindrical shell, and heads fusion welded at opposites ends of the shell. The side ends where the heads are joined to the shell are crimped radially inward to each end ... | 04/06/2004 |
| 6557747 | Highly gas tight chamber and method of manufacturing same A method of manufacturing a hermetically sealed chamber, including preparing two aluminum or aluminum alloy material members which face each other, forming a first extending convex portion on a surface to be metal-bonded of one of the two aluminum or alum... | 05/06/2003 |
| 6502739 | Method of manufacture of a structural body The rotary tools are disposed to weld along two spaced welding lines. The two rotary tools are inserted into respective welding joints and moved at the same time along the respective welding lines. At a position P1 of a portion of a window one rotary tool... | 01/07/2003 |
| 6499646 | Fusion welded liquefiable gas cylinder with overpressure protection heads and method for making the same A liquefiable gas pressure cylinder and method for making the same with the cylinder including a cylindrical shell, and heads fusion welded at opposites ends of the shell. The side ends where the heads are joined to the shell are crimped radially inward t... | 12/31/2002 |
| 6457630 | Tank trailer construction An improved method for constructing a container having at least three panels, all of which intersect at a common point and each adjacent pair of which intersect along a line, includes welding each adjacent pair of panels to join them together by placing a... | 10/01/2002 |
| 6412684 | Protective lining for pressure equipment which can be used in processes for the synthesis of urea The present invention relates to a new type of lining with two layers, one of which, obtained by welding deposit, can be used for the protection of internal surfaces of chemical equipment capable of abide pressures lower than 100 MPa, in processes for the... | 07/02/2002 |
| 6349873 | Above ground storage tank for holding combustible material and supporting equipment thereon An above ground storage tank for holding combustible material and for supporting equipment thereon, such as an electric power generator, has an inner tank with a bottom wall, opposed side walls, opposed end walls and a top wall preferably formed as metall... | 02/26/2002 |
| 6328197 | Aerosol dispensing container and method for manufacturing same A container body is made from a composite sheet having a metal layer which has at least one side covered by a corrosion-resistant layer, such as a layer of thermoplastic. The sheet is moved under one or more high-pressure water jets which remove a strip o... | 12/11/2001 |
| 6290085 | Partitioned closed container, its production method and pressure container An inventive partitioned closed container comprises a cylindrical main body, a partition provided within said main body in a body therewith along the longitudinal direction thereof and lids for closing openings of the main body. The lids are joined with t... | 09/18/2001 |
| 6276595 | Process and gas-permeable brazing foil for the production of a metallic honeycomb body A process and a brazing foil are used for the production of a metallic honeycomb body which is wound, stacked or twisted from at least partially structured sheet layers. At least one end surface of the honeycomb body which is produced from the sheet layer... | 08/21/2001 |
| 6273323 | Manufacturing method of a structural body Rotary tools 340A and 340B are disposed to weld along two joining lines. For this purpose spaced welding lines the two rotary tools are inserted and into respective welding joints moved at the same time along their respective welding lines. At a position ... | 08/14/2001 |
| 6268066 | Structure and process for automatic welding stainless steel boxes A structure and a method of making a burner box by providing a U-shaped body with end members. The end members each rest on an end of the body and of the U-shape body. The ends are welded to the end members to the U-shaped body by a tungsten arc gas weldi... | 07/31/2001 |
| 6267289 | Safety process for pressure equipment in contact with corrosive fluids Method for the safety and extension of the operating life of pressure equipment having an internal chamber suitable for containing a process fluid, surrounded by a pressure-resistant body (1) equipped with weep-holes (2), made of a material subject to cor... | 07/31/2001 |
| 6264095 | High temperature isostatic pressure bonding of beryllium pressure vessels with an interior void A process of bonding metal parts to one another to form seamless, hollow metal articles, particularly made from beryllium. Tooling is assembled to the parts, prior to hot pressing, to cause pressure to be applied to selective portions of the parts. The pa... | 07/24/2001 |
| 6247634 | Method and apparatus for forming a stir welded joint at meeting cylindrical edges A knock-down anvil assembly provides a rotary anvil ring inside the cylindrical end portions of tank sections to be stir welded together as a butt joint, and an external reactive roller unit is provided which bears against the outer faces of these end por... | 06/19/2001 |
| 6187395 | Process for the production of a weld joint and conveying and storage containers produced according to this process for burned out nuclear fuel cartridges The invention relates to a process for the production of a welded joint for at least three components of a multiple butt joint. In order to create the welded joint in the multiple butt-joint by welding from one side only, and to allow components to be fit... | 02/13/2001 |
| 6188741 | Machined stub tube in a bottom head of a boiling water reactor An integral stub tube which simplifies the reactor pressure vessel fabrication process, provides a structural transition between the penetration and head, and facilitates future remote inspection of the attachment weld is described. In one embodiment, a s... | 02/13/2001 |
| 6161272 | Liquid storage tank apparatus and method of forming same A method of fabricating a tank including placing the tank lid on a support surface such that a surface of the lid faces downwardly, affixing first and second sides and first and second ends along and adjacent to a perimeter of the lid on an opposite surfa... | 12/19/2000 |
| 6036078 | Repairing a weak spot in the wall of a vessel A method of repairing a weak spot in the wall of a vessel, which method comprises (a) securing at least one support element to the wall of the vessel in the neighborhood of the weak spot, wherein the ends of the support element(s) are fixed to the wall of... | 03/14/2000 |
| 6010669 | Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea A method for repairing and restoring the functionality of equipment subjected to internal corrosion during its operation at high or medium pressure in a plant for the synthesis of urea. The method includes the cleaning of the corroded area, the formation ... | 01/04/2000 |
| 5927590 | Spin beam for spinning a plurality of synthetic filament yarns and its manufacture The invention relates to a spin beam for spinning a plurality of synthetic filament yarns, and which has the shape of an elongate, hollow parallelepiped block formed by two side walls, a lower wall, an upper wall and end walls. The spin beam comprises a n... | 07/27/1999 |
| 5878940 | Method of fabricating sheet metal structures by welding and structure formed thereby A method of joining sheet metal parts is disclosed which includes forming tabs on one and slots in the other of a pair of parts being welded together with the tabs having a length equal to half the dimensional thickness of the parts. The tabs fit accurate... | 03/09/1999 |
| 5842271 | Apparatus for assembling an electric motor employing a casing body having low dimensional accuracy There is provided an apparatus for assembling an electric motor capable of equalizing a gap formed between a stator and a rotor even when a casing body has low dimensional accuracy. In assembling an electric motor, such as an electric motor section of a s... | 12/01/1998 |
| 5809098 | Method for sealing a stub tube in a nuclear reactor Methods for sealing cracks adjacent stub tube attachment welds in a reactor pressure vessel of a nuclear reactor are described. The reactor pressure vessel includes at least one stub tube through which a control rod housing extends. The control rod housin... | 09/15/1998 |
| 5791551 | Vacuum insulation vessels and methods of making same The present invention involves the use of a braze preform (28) for sealing and maintaining a vacuum in an insulation vessel (10). The braze preform (28) comprises particles of a braze material that are at least partially sintered together and at least sub... | 08/11/1998 |
| 5662264 | Method for welding aluminum plates A method for manufacturing a large basically spherical vessel from plane aluminum plates having a thickness in the range from about 20 mm to about 70 mm, comprises (a) forming at least first and second plane plate assemblies by downhand welding together p... | 09/02/1997 |
| 5661894 | Method for assembling an electric motor employing a casing body having low dimensional accuracy There is provided a method for assembling an electric motor capable of equalizing a gap formed between a stator and a rotor even when a casing body has low dimensional accuracy. In assembling an electric motor, such as an electric motor section of a scrol... | 09/02/1997 |
| 5628449 | Method of welding a carbon steel and an austenitic stainless steel together and resultant structure Method of welding a carbon steel and a austenitic stainless steel involves using high density energy beam like a laser beam or electron beam. Welding using high density energy beam is effective to obtain a high precision welding. For the purpose of obtain... | 05/13/1997 |
