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| Number | Title | Issue Date |
| 8100312 | Variable linear geometry machine for continuously forming square tubes A machine for continuously forming square tubes includes, in sequence, forming stations suitable for progressively bending a sheet strip, at least one finishing station suitable for further approaching the edges of the bent sheet strip for the final welding and at l... | 01/24/2012 |
| 7909226 | Device for producing a longitudinally welded hollow profile using a holding-down device A method for producing a longitudinally welded hollow profile from a sheet metal blank having defined longitudinal edges, in which the sheet metal blank is initially preformed into an open seam profile with the aid of at least two tool parts allows for the economica... | 03/22/2011 |
| 7399264 | High frequency induction welding of austenitic stainless steel for pressure vessel tubing A process for producing high pressure tubing from austenitic stainless steels. The process entails passing a continuous austenitic stainless steel strip through pre-weld rolls enclosed in a forming housing to produce a continuous tubular shape having opposing edges ... | 07/15/2008 |
| 7293687 | Apparatus for manufacturing tubes An apparatus (1) for manufacturing tubes made from thin-walled material, especially made from sheet metal, with a welding machine for longitudinal-seam welding, as well as with a clamping device (2), which has clamping jaws, which are arranged on oppos... | 11/13/2007 |
| 7266886 | Method of continuously fabricating a corrugated coaxial cable The invention relates to a method of continuously fabricating a coaxial cable in which ring-shaped corrugations are imparted to a conductor of the cable in a corrugator. The corrugator is made to operate at constant speed. ... | 09/11/2007 |
| 7073259 | Apparatus and method for manufacturing an automotive beam In an apparatus and method for manufacturing an automotive beam for use as a beam in structural components of automobiles, the beam is provided with significant improvements in terms of torsional rigidity and yield strength. The beam improves the overall safety of p... | 07/11/2006 |
| 6828523 | Method and device for the formation of pipes A method for the manufacture of welded tubes is provided. The tube bodies are produced in a press or rounding apparatus and are fed to a welding machine, such as a laser or electron beam type welding machine. The tube is formed when the edges of the tube bodies are ... | 12/07/2004 |
| 6769597 | Bent work and bending method and bending device used therefor A bent work is integrally formed at low cost by bending a belt-shaped thick steel material having an L-shaped cross-section so as to form a cylinder and by welding ends of the belt-shaped thick steel material to each other, the bent work being used as a bearing-rece... | 08/03/2004 |
| 6750420 | Method for welding tubes and device for carrying out said method A tube welding machine (1) is of modular construction, the individual modules (2, 3, 4, 5) being arranged on a common support rail (6). ... | 06/15/2004 |
| 6688513 | Process for producing longitudinally welded tubes In a process for producing longitudinally welded tubes, a metal strip, which is continuously pulled from a supply, is gradually formed into a slit tube and the longitudinal slit of said slit tube is welded. The metal strip (2) is pulled through a pluralit... | 02/10/2004 |
| 6639194 | Method for manufacturing a multiple walled tube A method for manufacturing a multiple walled tube comprising a rolling of a plated metal strip through at least two complete revolutions to form a tube having at least a double wall which has a plated layer on the inside of the tube, said rolling being fo... | 10/28/2003 |
| 6629632 | Apparatus and method for manufacturing hollow shafts An apparatus and method for welding a shaft having an open seam defined between opposed longitudinal edges. The method comprising passing the shaft along its longitudinal axis through an array of pressure rollers which contact the surface of the shaft at ... | 10/07/2003 |
| 6588648 | Method and device for transferring a hollow-profile blank During manufacture of certain hollow profiles suitable for use in car body construction the welded profiles are subjected to a further deformation process, namely hydroforming. At present the corresponding welding machines are charged manually. The invent... | 07/08/2003 |
| 6494360 | Method and device for producing straight bead welded pipes from flat sheet metal blanks An apparatus to produce straight bead welded tubes from flat sheet metal blanks with two parallel longitudinal edges includes two form tool halves. The two form tool halves have outer cylindrical half shells borne by a tool support, and are disposed later... | 12/17/2002 |
| 6405919 | Process for the continuous production of longitudinally seam-welded and corrugated metal tubes In a process for the continuous production of longitudinally seam-welded and corrugated metal tubes (46), a metal band drawn off from a supply reel is formed into an open-seam tube, welded at its longitudinal edges, and the welded smooth tube (45) corruga... | 06/18/2002 |
| 6386424 | Apparatus for making roof flashing units and method of making the units Ultrasonic welding apparatus is used for making roof flashing units. The roof flashing unites typically include a generally flat aluminum plate and a cylindrical aluminum element joined to the generally flat plate. Two ultrasonic welders are used to make ... | 05/14/2002 |
| 6367684 | Method and device for working a weld on a support sleeve A method for smoothing and compacting a weld on a cylindrical support sleeve includes mounting the support sleeve on an abutment and moving a device across the support sleeve such that a roller on the support sleeve rolls on the weld under pressure so tha... | 04/09/2002 |
| 6223407 | Apparatus for manufacturing an optical fiber cable In an apparatus for manufacturing an optical fiber cable that includes a metal tube (3) in which at least one optical fiber (2) is arranged in a viscous plastic mass, which apparatus includes a device continuously forming a metal strip (5) into a slit tub... | 05/01/2001 |
| 6216940 | Pipe forming roll apparatus and method A forming stand for continuously forming a skelp material into a pipe, by pressure of spaced-apart forming rolls supported by spaced upper and lower shafts, the forming rolls having two portions, with one portion fixedly fitted on one side of its shaft, a... | 04/17/2001 |
| 6215084 | Method and apparatus for welding container bodies In a guide and calibrating tool for guiding container bodies for welding, at least one of the guide rollers is driven. The drive is pneumatic, by compressed air blown by a nozzle onto recesses in the roller. The roller is driven only initially upon restar... | 04/10/2001 |
| 6098869 | Seam welding method and apparatus To weld a workpiece rounded from plane metal sheet on a seam welding machine, the workpiece is introduced into a preform (7) whose internal shape is approximately the same as the workpiece. Stops (11, 12, 14) are used to fix the workpiece in place in the ... | 08/08/2000 |
| 6027011 | Method and device for producing long metal tubes During the production of long metal tubes with small diameters, where a metal tape is drawn from an annular coil, is gradually formed into a tube with a longitudinal slot and the longitudinal slot is welded, the internally and externally located metal tap... | 02/22/2000 |
| 5975404 | Apparatus for manufacturing an optical cable from a metal tube In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outs... | 11/02/1999 |
| 5934544 | Apparatus and method for making an automotive bumper beam Disclosed is an apparatus and method for making an automotive bumper beam by a single roll forming. The apparatus of the present invention comprises an uncoiler; a straightener; a brake press; a first group of roll formers; a second group of roll formers;... | 08/10/1999 |
| 5868299 | Method and apparatus for maintaining seam alignment in seam welded tubes The invention comprises a method and apparatus for maintaining seam alignment in seam welded tubes comprising the tube being formed to be advanced through a shaping station after seam welding and prior to the cooling of tube wherein the tube is preformed ... | 02/09/1999 |
| 5796065 | Apparatus for producing contact/connection member for electric and electronic parts An apparatus for producing a contact/connection member for electronic parts has a base material supply unit for continuously supplying a flexible belt-shaped base material, a wire material supply unit for continuously supplying a precious metal wire mater... | 08/18/1998 |
| 5782398 | Device for inside scarfing of longitudinally welded tubes or profiles A device for the inside scarfing of tubes or profiles longitudinally welded in a tube welding line consists of a tool carrier guided on guide rollers inside the tube to which a cutting ring is attached. The cutting ring is clamped in a cutting ring holder... | 07/21/1998 |
| 5756167 | Rigid elongated member for use in vehicles and producing method and apparatus therefor A method of producing an elongated member having a main body portion and terminal portions extending form ends thereof includes bending an elongated strip between circumferential faces of first forming rolls and second forming rolls having parallel centra... | 05/26/1998 |
| 5738723 | System for forming metal tubing A system is disclosed for forming metal tubing and, more particularly, brake tubing. The system includes a mill for rolling a metal strip into a tube so that at least a portion of the strip overlaps itself. The strip is then brazed so that the overlapping... | 04/14/1998 |
| 5653898 | Method of manufacturing optical fiber cable covered with metal pipe, and apparatus for manufacturing this optical fiber cable An apparatus for manufacturing an optical fiber cable covered with a metal pipe forms a metal pipe by abutting two sides of a metal strip to be pulled, introduces an optical fiber or an optical fiber bundle into the metal pipe, and seals the opening of th... | 08/05/1997 |
| 5613631 | Method for producing a lengthwise welded metal tube In a method for producing a lengthwise welded metal tube with an outside diameter of 1 to 6 mm, whereby a metal band is shaped into a lengthwise slotted tube by a forming tool, and the lengthwise slot of the tube is welded by a laser welding installation,... | 03/25/1997 |
| 5607098 | Tubular shape finishing apparatus for an electro-resistance-welded pipe A tubular shape finishing apparatus in a steel pipe manufacturing system which molds band steel in a tubular shape while passing through a plurality of sets of forming roll stands and welds the butt portion by a seam welding unit, the tubular shape finish... | 03/04/1997 |
| 5560536 | Apparatus and method for making coaxial cable having longitudinally welded outer conductor An apparatus for making cable including an elongate core and a surrounding longitudinally welded tube includes one or more pairs of opposing tube forming rolls which form a tape into a generally tubular shape surrounding the advancing core. A pair of tube... | 10/01/1996 |
| 5499580 | Process for fabricating a sleeve shaped printing form A sleeve-shaped printing sleeve for a form cylinder of a printing machine is fabricated from a blank of metallic material by cutting the blank to a width corresponding to the form cylinder and to an intermediate length which exceeds the circumference of t... | 03/19/1996 |
| 5497935 | Automated production lines for rolled and welded ferrules The invention is in the field of metallurgy and relates to an automatic machine for the continuous production of cylindrical shells from a pile of flat metal sheets. Said machine is characterized in that it is comprised of, from the output of the shell to... | 03/12/1996 |
| 5494209 | Method for the manufacture of an internally enhanced welded tubing A metallic strip having at least one surface enhanced with a texture pattern is formed into a welded tube. A fin insert shapes the edges of the metallic strip prior to welding and minimizes the formation of a protruding weld bead. The longitudinally runni... | 02/27/1996 |
| 5474227 | Method of forming seamed metal tube The method of forming a coated seamed metal tube of this invention is particularly, but not exclusively adapted to existing continuous tube forming mills, wherein the tube is formed from a metal strip and welded with the seam located in an upper portion o... | 12/12/1995 |
| 5454504 | Apparatus for roll-forming end bumper for vehicles An end bumper for vehicles constructed from a single sheet of high-tensile strength steel roll-formed to provide two side-by-side tubular sections. Each section has a front wall, an outer side wall, a rear wall, and an inner side wall, the inner side wall... | 10/03/1995 |
| 5366137 | Method and apparatus for shaping metal sheets into can bodies and feeding the can bodies to a welding station The can body to be welded in a welding station is shaped by gradually bending flat metal sheets zone by zone along a linear conveying route until the can body has been shaped. This linear conveying route at the same time leads to the welding station. In t... | 11/22/1994 |
| 5360156 | Welding management apparatus A welding management apparatus for use with a tube production machine. A workpiece fed from a roll of metal strip is formed in a tubular formation having side surfaces opposite to each other. An upsetting pressure is applied to joint the opposite side sur... | 11/01/1994 |
