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| Number | Title | Issue Date |
| 8186199 | Tubular member having multiple sized splines A driveshaft assembly includes a tubular slip member having a first spline member having a plurality of splines formed thereon having a first tolerance and a second spline member having a plurality of spline sections. The plurality of spline sections includes a plur... | 05/29/2012 |
| 8117882 | Multi-layer pipe and method for its manufacture A method for manufacture of a multi-layer pipe (5) by means of a bending roller with individual material layers (1, 2) to be combined into the multi-layer pipe (5) being placed one upon the other, and the multi-layer material thus formed being s... | 02/21/2012 |
| 8037732 | Method of producing seamless metal tube and punch for use therein A hole 30 is formed in the center of the rear end face 20 of a round billet 10. The hole 30 has a predetermined depth from the rear end face 20 and a plurality of grooves 31 are provided in the side surface thereof. Each gro... | 10/18/2011 |
| 7861571 | Trapped ball draw process for reducing the diameter of tubing A mechanical process to reduce and/or reform the mass of a tube (either metallic or of some other material) to specified dimensions, by any or all of the following means: thinning the wall of the tube, reducing the diameter of the tube, and elongation of the tube. T... | 01/04/2011 |
| 7849724 | Method of manufacturing a ring-shaped member The outer side of a pair of curved parts 3d of a longitudinal annular blank is pressed and energized towards the curved part 3d of the opponent side with a molding outer die 14 of a shaping device 13 to press and widen each ... | 12/14/2010 |
| 7788960 | Multi-walled tube and method of manufacture A method of forming multi-wall tube from a single-wall piece of tube. The multi-wall tube is formed by relative motion between a die shoe and the single-wall tube to deform the material. ... | 09/07/2010 |
| 7587923 | Method of making a tubular A method of marking a tubular includes the steps of applying an identification indicia onto the outer diameter of the tubular, forming an indicator onto at least one of the ends of the tubular such that the indicator corresponds to information in the identification ... | 09/15/2009 |
| 7451631 | Spiral pipe machine A spiral pipe machine includes a feeding assembly for continuously feeding a web of material, and a forming assembly for accepting the web. The forming assembly bends the web to form a first section of a spiral pipe having a first predetermined diameter. A controlle... | 11/18/2008 |
| 7418849 | Process of producing profiles whose cross-section is variable in the longitudinal direction A process of producing profiles whose cross-section is variable in the longitudinal direction, characterised by the process stages of cutting a blank 31 with a substantially constant width along a longitudinal direction, deforming the blank 31 by deep-... | 09/02/2008 |
| 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 |
| 7290337 | Manufacturing method for frame body and frame body In this manufacturing method for a frame body, after ring rolling a metal material to form a ring-shaped member, a rectangular member is formed by pressing and deforming this ring-shaped member in the radial direction. At this time, an angle of corner portions that ... | 11/06/2007 |
| 7174761 | Method of manufacturing a seamless pipe When manufacturing a seamless pipe by carrying out elongation rolling and sizing on a mother tube for forming a seamless pipe, the occurrence of portions of thickness variation in the seamless pipe is suppressed by previously identifying the portions of wall thickne... | 02/13/2007 |
| 7107682 | Method for manufacturing tubes and profiles The invention relates to a method for manufacturing tubes and profiles with variable wall thickness over the length. The method comprises the steps of flexible rolling of continuous material strip with variable thickness in the longitudinal direction of the strip ma... | 09/19/2006 |
| 7051768 | Hydroform process and hydroform product When hydroforming a steel pipe, a tubular deformation assisting member made of an incompressible material softer than the steel pipe is fitted on the outer peripheral surface of the steel pipe. The deformation assisting member is attached at least to an area corresp... | 05/30/2006 |
| 7047703 | Metal framing strut with coiled end portions A building strut is formed as a cylinder having a plurality of contiguous sidewalls. Opposing terminal ends of the sidewalls define the ends of the cylinder. One or more of the sidewall ends are formed as a coiled spiral. These spirals may be formed within one of th... | 05/23/2006 |
| 7010951 | Feeding mechanism of an automatic pipe bending machine A feeding mechanism of a pipe bending machine is equipped with several auxiliary hydraulic cylinders in addition to an original power source for providing power to feed a pipe; the auxiliary hydraulic cylinders are joined to an auxiliary fixing member at output rods... | 03/14/2006 |
| 6948649 | Method of producing steel pipes, and welded pipes The high yield ratio problem intrinsic in high-strength steel pipes is solved and a method of producing a steel pipe, while securing the pipe roundness is provided. A steel pipe produced from a steel plate by forming and welding is subjected to 0.3 to 1.2% of expans... | 09/27/2005 |
| 6851172 | Method for securing a rod-shaped part in a holding member In a method of securing a rod-shaped part in a surrounding holding member, a flat holding member is fabricated with opposite side edges that are formed with elements configured for interlocking engagement. The side edges of the holding member are bent upwards, and t... | 02/08/2005 |
| 6785947 | Method of producing a core board product A method of making core board product may be under the control of a processing unit. A first tubular core may be dispensed to a conveying portion to support the first tubular core at an interim location. The first tubular core may be conveyed to a flattening positio... | 09/07/2004 |
| 6589373 | Selectively heat treated airbag canister and method for making same A selectively heat treated canister for use in a vehicle airbag deployment system is configured to contain combustion materials and to contain gases produced from the combustion thereof. The canister includes a tubular body having a length and a longitudi... | 07/08/2003 |
| 6579579 | Container made of a light metal alloy and process for its manufacture A container, in particular a container with a tube-shaped wall, made of a light metal alloy for use as a reaction chamber in a process for manufacturing wafers. The container wall is made by way of extrusion or ring-rolling, and the container wall is made... | 06/17/2003 |
| 6516646 | Device for manufacturing a hollow body from two plates A device for manufacturing a hollow body from two plates. The device includes an internal high pressure forming tool having an interior surface defining a mold chamber corresponding to a shape of the hollow body. The forming tool being arranged to receive... | 02/11/2003 |
| 6336254 | Curved handle adapted for attachment to a wheelbarrow or the like, and a method of manufacturing the same A handle attachment is appended to a straight wheelbarrow handle. A first portion of the attachment has a specially designed flared end which is fitted to securely engage a rectangular portion of the wheelbarrow handle. The first portion of the attachment... | 01/08/2002 |
| 6237389 | Apparatus and method for forming screw-thread on a pipe In an apparatus and a method for forming threaded portions around a metal pipe with accuracy and ease, a preliminary forming is performed so as to recess portions of the metal pipe a little bit inwardly in the radial direction thereof by advancing auxilia... | 05/29/2001 |
| 6234000 | Ball-bat repairing method The present invention provides a ball-bat repairing apparatus to repair, for example, softball and baseball bats, in which particularly aluminum ball-bats which have been deformed from repeated use are returned to substantially their original diameter alo... | 05/22/2001 |
| 6196530 | Method of manufacturing stabilizer for motor vehicles Stabilizer (1) for motor vehicles which has a toroidal cross section, and which is formed of several stabilizer sections that, together, create a U-shape having a pair of U-legs (2) connected by a U-back (3) via arcuately shaped transitional shoulder area... | 03/06/2001 |
| 6059321 | Grip coupling for joining conduit A fitting is provided for joining to a smooth exterior periphery of a tubular conduit with a seal member sealing therebetween. The fitting has a tubular body with a central passage for receiving the tubular conduit. The central passage defines a central a... | 05/09/2000 |
| 5979201 | Hydroforming die assembly for pinch-free tube forming A die assembly having die structures that are cooperable to define a die cavity into which a metallic tubular blank can be disposed. A first die structure is moveable to seal the die cavity, and after the die cavity is sealed, the first and second die str... | 11/09/1999 |
| 5964019 | Method for making irrigation standpipe flow diverter A flow diverter 10 for mounting on the flange 53 of an irrigation standpipe valve 52 comprising a hollow cylindrical body 12, having a side opening 14, an anchor strap 16 formed integrally with the body 12 below the side opening 14, and a cap 18 mounted t... | 10/12/1999 |
| 5956988 | Process for heading pipe ends and device for implementing it The present invention is a novel device and method of shaping an end of a pipe. One end of a pipe is inserted into a shaped die in such a way that the outer surface of the pipe rests against the interior portion of the die. A piston is then inserted into ... | 09/28/1999 |
| 5924316 | Method of manufacturing pipes having sections with different wall thicknesses A method of manufacturing pipes having sections with different wall thicknesses from an initially plane sheet metal in which a starting sheet metal is subjected to a rolling deformation so as to intentionally produce areas of different wall thicknesses in... | 07/20/1999 |
| 5903964 | Common rail and method of manufacturing same A common rail is provided which is simple in structure and capable of connecting a piping component to a thick wall pipe thereof in a highly sealed and light weighted manner. In a common rail adapted to connect a pipe component to at least one end of a th... | 05/18/1999 |
| 5836624 | Metal part including a spherical wall element, and an exhaust ball-coupling including such a part The spherical wall element (2, 15) is provided with a series of work-hardened annular strips (16, 17) spaced apart and extending substantially coaxially so as to form reinforcement that is not very deformable for the spherical wall element.... | 11/17/1998 |
| 5819807 | Braided conduit and method of making a braided conduit Flexible convoluted conduit covered with braid made by cold forming the braid to an end of the conduit. Cold forming can involve magneforming. Resulting conduit is not brazed, welded, or annealed, thereby facilitating construction of convoluted conduits w... | 10/13/1998 |
| 5803128 | Braided conduit and method of making a braided conduit Convoluted conduit covered with braid made by cold forming the braid to an end conduit or an end section of the convoluted conduit. Cold forming can involve magneforming. Resulting conduit need not be brazed, welded, or annealed, thereby facilitating cons... | 09/08/1998 |
| 5393109 | Pipe connection having a cutting ring In a pipe connection having a cutting ring comprising a metallic compound, in particular an alloy with the constituents CrNiMo, which cutting ring surrounds the pipe wall and can be pressed into same with at least one cutting edge, the cutting ring is cut... | 02/28/1995 |
| 5310163 | Barriers A barrier is fixed on a wall or other perimeter structure by way of support posts. The barrier has a support shaft along which a number of rotatable units are mounted. Each rotatable unit is formed from two interengaged elements, each element having been ... | 05/10/1994 |
| 5226981 | Method of manufacturing corrosion resistant tubing from welded stock of titanium or titanium base alloy A method of manufacturing corrosion resistant tubing from seam welded stock of a titanium or titanium alloy metallic material having a hexagonal close-packed crystal structure. The method includes cold pilgering a seam welded tube hollow having a weld are... | 07/13/1993 |
| 5090477 | Evaporator having integrally baffled tubes A tubular manifold for an evaporator includes an integral baffle formed by deforming a wall section of a header tube onto an opposing wall section and crimping the two side walls inwardly at an axial point where the wall section is deformed. The internal ... | 02/25/1992 |
| 4961576 | Constant wall shaft with reinforced tip A hollow metallic shaft for sporting implements includes a cylindrical tip section having a first constant wall thickness, a shank section including a tapered portion and having a second constant wall thickness, and a cylindrical portion located adjacent ... | 10/09/1990 |
