Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7523632 | Modular rolling mill A modular rolling mill comprises a plurality of rolling units having work rolls configured and arranged to progressively reduce the cross sectional area of a product received along a mill pass line. Gear units are mechanically coupled to each rolling unit, with each... | 04/28/2009 |
| 7424816 | Roll stand for rolling bar-shaped or tubular stock A roll stand for rolling bar-shaped or tubular stock, having a stand housing, having at least one roll which is arranged on a roll shaft rotatably mounted in the stand housing and is connected in a rotationally fixed manner to the roll shaft via a frictional connect... | 09/16/2008 |
| 7333925 | Manufacturing method and manufacturing apparatus of pipe, thickness deviation information derivation apparatus, and computer program A complex Fourier transform is performed on measured values of wall thickness at points in a cross section of a pipe in an axial direction, types of thickness deviation are classified, thickness deviation amount is calculated from the absolute value of the complex F... | 02/19/2008 |
| 7316144 | Rolling mill consisting of horizontal stands and vertical stands In a rolling mill which consists of at least one horizontal stand (1) and at least one vertical stand (2), which are connected with each other, between both stands (1, 2), connection elements (7) are releasably arranged, wherein the conne... | 01/08/2008 |
| 7301955 | Method for smoothing the transmission of a time-sensitive file The present invention is directed to a method and apparatus for preparing a transmission schedule that when utilized results in the smooth transmission of a time-sensitive file over a communications network. According to one embodiment of the invention, for each fra... | 11/27/2007 |
| 7234369 | Continuously adjustable self-lubricating mill roll drive Described is an adjustable roll drive including a fixed drive cylinder having a fixed drive gear, a fixed intermediate gear rotated by the fixed drive gear, a movable intermediate gear rotated by the fixed intermediate gear, and a movable driven cylinder having a mo... | 06/26/2007 |
| 7207204 | Crimper In one embodiment, an apparatus for shaping an article may comprise a plurality of movable dies arranged to form a chamber whose size may be varied by moving the dies. Each of the dies may have a contacting surface for contacting the article to be shaped. The chambe... | 04/24/2007 |
| 7191629 | Modular rolling mill A modular rolling mill comprises a plurality of separate rolling units arranged along a mill pass line. Each rolling unit includes at least two pairs of work rolls defining oval and round roll passes and carried on roll shafts that are staggered 90° with respect to... | 03/20/2007 |
| 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 |
| 7143625 | Stent crimper An apparatus for reducing the size of a medical device, the apparatus including at least one independently operable discrete section which can reduce the diameter of the medical device, the independently operable discrete section including a plurality of coupled mov... | 12/05/2006 |
| 7043953 | X-H rolling method for parallel-flange steel sections (supports) A method of X-H rolling of a parallel flange steel structural shape or beam with an H cross section using a compact rolling group. In the first universal mill frame the vertical roll have roll surfaces inclined to one another at an angle up to 10° whereas in the se... | 05/16/2006 |
| 7028518 | Method of producing seamless steel tubes A method of producing a seamless steel tube to enable it to suppress not only the deviations in wall thickness occurring in the direction of reduction in a mandrel mill but also the derivations in thickness occurring at places deviating from the direction of reducti... | 04/18/2006 |
| 7021114 | Stent crimper An apparatus for applying an inward force to a medical device may include at least two independently operable sections. Each section may include a plurality of movable blades arranged to form an aperture or chamber whose size may be varied. Each blade may be pivotal... | 04/04/2006 |
| 6945084 | Rolling mill for rolling or sizing metal pipes A rolling mill for rolling or sizing of metallic pipes, bars and wires has a plurality of rolling units which are arranged on a straight line close to one another and can be exchanged in total, partly or individually, each of the rolling units having at least three ... | 09/20/2005 |
| 6763561 | Continuous casting and hot rolling apparatus for parallel production of multiple metal shapes A continuous casting and hot rolling apparatus for the parallel production for a multiplicity of rolled shapes, wire and rod of circular, oval and polygonyl cross section in which a continuous caster or flow shaper produces initially a plurality of discreet strands ... | 07/20/2004 |
| 6647604 | Continuous casting and rolling of multiple rods A rolling system has a die having a row of separate throughgoing passages for producing a plurality of continuously advancing and parallel hot metal strands and a plurality of pinch rollers for pulling the strands out of the die and moving them in a direc... | 11/18/2003 |
| 6634073 | Continuous production facilities for wire The present invention relates a train of in-line continuous manufacturing equipment for producing steel wire, considered difficult with a block mill up to now, capable of efficiently carrying out controlled-rolling and slow-cooling by an effective in-line... | 10/21/2003 |
| 6564608 | Rolling method and line for rails or other sections Rolling method and line for rails or other sections starting from a steel bar, including a roughing step and a finishing step. The roughing step provides use of a two-high reversible roughing stand, or BDM (Break-Down Mill), associated with a reversible e... | 05/20/2003 |
| 6546777 | Method and apparatus for reducing and sizing hot rolled ferrous products A method of continuously rolling a ferrous workpiece into a finished round, comprising rolling the workpiece in successive first and second roll passes at an elevated temperature of between about 650 to 1000° C., the first and second roll passes each bei... | 04/15/2003 |
| 6546776 | High speed finishing block A multi-stand block for a rolling mill comprises a plurality of roll stands alternately arranged on opposite sides of a pass line along which a product is rolled in a downstream direction from an entry end to an exit end of the block. Drive shafts are pro... | 04/15/2003 |
| 6505491 | Rolling mill and rolling-mill train This invention provides a rolling mill and a rolling-mill train which are compact. Reducers to be coupled with them can be made compact. The inner surfaces of pipes to be rolled with the rolling mill and the rolling-mill train can be prevented from becomi... | 01/14/2003 |
| 6502446 | Rolling unit for a rolling mill for rolling or sizing metal pipes, bars or wires A rolling unit for a rolling mill for rolling or sizing metal pipes, bars or wires has at least three rolls arranged in a star arrangement. Each roll has a separate drive mechanism and is rotatably mounted on bearings on both sides of it. The rolls are ad... | 01/07/2003 |
| 6490902 | Compact two-line rod-rolling stand A two-line roll stand has a frame, an upper shaft on the frame, and two lower shafts on the frame spaced horizontally from each other below the upper shaft and forming with the upper shaft an isosceles triangle. Identical drive units each have a pair of r... | 12/10/2002 |
| 6490901 | Rolling unit for a rolling mill for rolling or sizing metal pipes, bars or wires A rolling unit for a rolling mill for rolling or sizing metal pipes, bars or wires has at least three rolls arranged in a star arrangement. Each roll has a separate drive mechanism and bearings on both sides of the roll. The rolls are adjustable radially ... | 12/10/2002 |
| 6442989 | Wire sizing rolling method In a sizing rolling method carried out by installing at least 3 sets of 4-roll rolling mills in series, a central angle θ1 of the perfect circle forming section of each rolling roll in a first path is set to less than 15°. The central angle Î... | 09/03/2002 |
| 6408665 | Finish hot rolling method for structural steels The present invention provides a finish hot rolling method for structural steels capable of realizing enhanced dimensional accuracy and a uniform microstructure, using a 2-stand 3-roll finishing mill, wherein an area reduction rate of the final finishing ... | 06/25/2002 |
| 6405573 | Wire rod rolling line The present invention relates to a wire rod rolling line in which a finishing mill group rear stage is composed of a combination of a plurality of 4-roll mills. An object of the present invention is to provide a wire rod rolling line having a very high op... | 06/18/2002 |
| 6276181 | Three-roll-type reducing mill for electro-resistance-welded tube A three-roll-type reducing mill including three forming rolls brought into contact with an outer periphery of an electro-resistance-welded steel tube for reducing its diameter. Two left and right sliding brackets respectively mounted with two follower for... | 08/21/2001 |
| 6276182 | Rolling stand, having three or more swinging and adjustable arms The invention relates to a mill for rolling pipes or other bodies such as flat blooms, bars, rods and the like. The rolling mill is formed by an outer load-bearing structure in which holders are accommodated so as to be extractable therefrom; in the holde... | 08/21/2001 |
| 6161412 | Multi-strand finishing block A multi-strand finishing block finishes two or more daughter strands slit from a parent bar. Each strand is rolled by at least two pairs of rolls arranged in tandem with the rolls of each pair being at right angles to the rolls of the other pair. A common... | 12/19/2000 |
| 6134930 | Lubrication system A system is disclosed for applying a liquid lubricant to first and second components enclosed in a housing, with the lubricant applied to the second components being exposed to contamination by a liquid coolant applied to the exterior of the housing, and ... | 10/24/2000 |
| 6128939 | Roll train and the relative rolling process with an improved yield A roll train includes a plurality stands positioned in series, wherein the stands are of at least two different types, one stand type being alternated with the other one. Each one of the stands has four rolls, opposed to each other in a two by two disposi... | 10/10/2000 |
| 6092408 | Steel mill processing by rhombic reversal reduction rolling A steel billet is reduced to a bar in a hot steel mill rolling operation by plural reductions successively produced by passage of a workpiece through a series of reducing mill stands. Each mill stand produces a workpiece having a rhombic shaped cross sect... | 07/25/2000 |
| 6085565 | Eight-roller type rolling mill and method of rolling using the mill A final finish-rolling stand of a rolling machine for producing round bar material is constructed as an eight-roller type rolling machine comprising: front four rollers of "+" distribution and back four rollers of "X" distribution which are contained in o... | 07/11/2000 |
| 6053022 | Modular rolling mill In a modular rolling mill gear units are installed between selected rolling units in place of other rolling units which haven removed from the mill pass line to thereby provide a gap in the rolling sequence. Each gear unit is coupled to the drive units pr... | 04/25/2000 |
| 6047578 | Multi-stand mandrel-free stretch reducing mill A roll pass of a roll set having three rolls for a multi-stand mandrel-free stretch reducing mill has a roll pass shape that deviates from the circular. A tube is passed in its longitudinal direction through the non-circular roll pass shape enabling modif... | 04/11/2000 |
| 6041635 | Unit for rolling pipes on a mandrel A rolling mill for rolling pipes on a mandrel (40) is formed by an alignment of rolling units according to the invention, each rolling unit comprises an outer annular structure (2) formed by at least two plate-shaped elements (3) connected rigidly to one ... | 03/28/2000 |
| 6035685 | Rolling unit Disclosed is a rolling unit (10) consisting of two roll stands (12, 14). The roll stands (12, 14) each have pairs of openings (24a) defined through a housing (24) to locate on each side of the pass line (PL), and a pair of eccentric members (26) each havi... | 03/14/2000 |
| 5983481 | Method of making forged steel bar A steel bar is made by first producing a continuously cast forgeable steel strand of generally square cross section with flat beveled corners at a temperature above a transformation temperature. This strand is then cut into billets which are passed throug... | 11/16/1999 |
| 5927128 | Roll stand arrangement for single strand rolling A block-type roll stand arrangement for single strand rolling including roll stand housings mounted on a support structure. The roll stand housings are all of the same construction and each receives a pair of roll support shafts and the drive gear units t... | 07/27/1999 |
