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| Number | Title | Issue Date |
| 7942307 | Apparatus for applying metallic cladding to interior surfaces of pipe elbows An apparatus for applying a helical cladding bead to the interior surface of a pipe elbow has a rotor mounted to an elbow carriage so as to be rotatable about a primary axis. The elbow carriage is longitudinally movable parallel to the rotor's rotational axis. A rad... | 05/17/2011 |
| 7386927 | Apparatus to roll, cut, weld, and form tank car outer jackets A system and method of fabricating tank car outer jackets are provided that include supporting a plurality of coils of sheet metal on a plurality of coil supports such that the central longitudinal axes of the plurality of coils are generally parallel to a central l... | 06/17/2008 |
| 7287684 | Filter cartridge assembly and method of manufacture An apparatus for filtering well fluids and method of manufacture is disclosed. The apparatus comprises an inner support, a filter spirally wrapped around the inner support, and an outer support wrapped around the filter enclosing the filter between the inner and out... | 10/30/2007 |
| 6875942 | Methods and systems for fabricating spiral welded cylinders A method for forming a cylindrical body utilizing a continuous weld is provided. The method includes feeding a source material including a first edge and a second edge from a coil and offsetting at least one of the first edge and the second edge. The method further ... | 04/05/2005 |
| 6732906 | Tapered tower manufacturing method and apparatus Method and apparatus for the manufacture of large-diameter, elongated, generally conical members in a continuous operation. ... | 05/11/2004 |
| 6717093 | Methods and systems for fabricating spiral welded cylinders A method for forming a cylindrical body utilizing a continuous weld is provided. The method includes feeding a source material including a first edge and a second edge from a coil and offsetting at least one of the first edge and the second edge. The method further ... | 04/06/2004 |
| 5957366 | Helically formed welded pipe and diameter control A helical weld servo controller for controlling the diameter of helically formed welded pipes adjusts the auxiliary hold down wheel position and the helix angle based on information provided by transducers regarding outgoing pipe diameter and by a laser v... | 09/28/1999 |
| 5180095 | Machinery for welding helical-seam pipe from metal strip Machinery for welding helical-seam pipe from metal strip. It includes a strip feed, a strip shaper, a seam welder, a pipe output, and a downstream pipe sectioner. The pipe sectioner has a cutter that moves back and forth axially, trimming sections of diff... | 01/19/1993 |
| 4746049 | Apparatus for fabricating multi-layer spiral tubes An apparatus for fabricating multi-layer spiral tubes of the type that while the webs are being wrapped in a spiral form the adjacent edge portions of the webs are welded with each other to form spiral tubes, is improved in that the apparatus has a take-u... | 05/24/1988 |
| 4640453 | Apparatus for fabricating multi-layer spiral tubes An apparatus for fabricating multi-layer spiral tubes including first drive means for performing rotation of an inner cylinder around which a web is to be wrapped spirally a slide base moveable along the longitudinal direction of the inner cylinder, the s... | 02/03/1987 |
| 4505417 | Mill for manufacturing bodies of multilayer high-pressure vessels A mill for manufacturing bodies of multilayer high-pressure vessels comprises rotators (3) of the body (1) of the high-pressure vessel, which have the butt end portions of the body (1) of the high-pressure vessel secured therein. The body (1) of the high-... | 03/19/1985 |
| 4501948 | Method and apparatus for forming spiral tubing A method and apparatus for forming a spiral tube from a length of metallic strip material wherein the strip is fed through a closed tube forming die operative to form the strip into a spirally wound tube having its longitudinal edges in juxtaposed relatio... | 02/26/1985 |
| 4436239 | Method and apparatus for manufacturing spiral pipe In the manufacturing of a spiral pipe, there is first determined a maximum curvature which should be imparted to a strip of pipe forming material in order that a desired residual moment will be imparted to the finished pipe after the strip bent to the max... | 03/13/1984 |
| 4314125 | Electric seam welding device in the production equipment of hot-dip metal-coated steel tubes This invention relates to the means of continuously seam-welding the areas to be joined together of steel strips formed like tubes in the production of hot-dip metal-coated steel tubes from steel strips in a continuous supply. This seam welding device is ... | 02/02/1982 |
| 4295592 | Apparatus for joining and cladding pipe sections An apparatus for joining and cladding pipe sections has a cradle which holds two cylindrical pipe sections with their ends abutting axially and their axes coaxially horizontally aligned. A carriage is displaceable axially adjacent the cradle and carries a... | 10/20/1981 |
| 4141481 | Method and apparatus for making helically seamed tubing A thin perforate, helically wound welded edge tubing is used as a filter core for a roving wound filter. The slightly roughened external edges of the spirally formed welded joint greatly adds to the ability of securing the fiber roving to the tube and pre... | 02/27/1979 |
| 4121747 | Storage tank construction procedures Large diameter storage tanks are constructed from strip metal wound in a helical path in which the tank is built upwardly. The strip is fed to a support assembly arranged circularly on a base, and the upper edge of the strip that is fed to the support ass... | 10/24/1978 |
| 4074847 | Welded storage tank construction including a structural fin Method and apparatus for producing a large diameter storage tank from strip metal. The strip is fed to a support assembly arranged circularly on a base and which supports the strip vertically in a helical path. The upper edge of the strip is bent into a r... | 02/21/1978 |
| 4063058 | Apparatus for making seam welded tubing Apparatus for making seam welded tubing of the type comprising a first butt welding machine for joining together by submerged arc welding the adjacent ends of successive lengths of strip to form a continuous strip, a strip storing device for storing the c... | 12/13/1977 |
| 3997097 | Means for fabricating tapered tubing Tapered spiral tube in continuous lengths is fabricated with an alternating increasing and decreasing diameter, the length being severed at the locus of change. The taper may be straight, convex or concave, the tube being produced from strip-stock which i... | 12/14/1976 |
| 3997098 | Helically seamed tubing and apparatus and method for making same A thin perforate, helically wound welded edge tubing is used as a filter core for a roving wound filter. The slightly roughened external edges of the spirally formed welded joint greatly adds to the ability of securing the fiber roving to the tube and pre... | 12/14/1976 |
