Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8047040 | Wire winding apparatus, method for wire winding and wire wound bobbin A wire winding apparatus for winding a wire on a bobbin includes a forming device forming the wire having a rounded cross section to have a polygonal cross section and a winding device winding the wire formed by the forming device on the bobbin. ... | 11/01/2011 |
| 7849723 | Rolling mill with stands with three adjustable rolls The invention relates to a rolling mill for tubes, in which a series of roll-holder containers (10) is housed in an external structure (2) extended along a rolling axis (L); the containers can slide inside the structure to be extracted therefrom and ea... | 12/14/2010 |
| 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 |
| 7367104 | Method and device for the production of a trimmed metal strip The invention relates to a method for production of a metal strip from a strip (6), cast directly from molten metal (4), whereby a trimming of the strip edges (9, 9′) of the strip (6) is carried out, characterised in that the strip edge... | 05/06/2008 |
| 7290424 | Push bench method for manufacturing small diameter tubing The present invention involves cost effective, efficient systems and methods for sizing pipe. In an embodiment of the present invention, a pipe sizing system includes a die having an opening operable to size the pipe, a hydraulic cylinder having at least one rod att... | 11/06/2007 |
| 7234334 | Saddle for backing assemblies in a rolling mill A saddle for a backing assembly in a rolling mill has non-cylindrical bearing surfaces that accommodate wear by allowing the saddles to self-align. The non-cylindrical bearing surfaces help prevent the needle bearings from being pinched and driven into the gear ring... | 06/26/2007 |
| 7086264 | Combined drive for a four-or-six-high rolling stand and an operating method for the same A roll stand has upper and lower rotatable working rolls defining a nip that pinches a workpiece strip and upper and lower vertically spaced rotatable backing rolls vertically flanking and engaging the working rolls. A drive includes a motor, upper and lower backing... | 08/08/2006 |
| 7024906 | Roll stand for rolling bar-shaped or tubular material The roll stand having at least one roll shaft 2, which carries a roll 6 and is subdivided into sectional shafts 3, 4 for the purpose of being able to change the roll, comprises at least one labyrinth-seal arrangement which is arranged in an annu... | 04/11/2006 |
| 6976514 | Pressing element of a machine for machining wood or plastic workpieces and method and device for adjusting such pressing element In a method for adjusting at least one pressing element of a molding machine for machining workpieces of wood or plastic material relative to a workpiece, transported through the machine and to be machined by the machine, the pressing element is adjusted outside of ... | 12/20/2005 |
| 6957488 | Material for rail of linear guide, rail for linear guide, process of manufacturing rail of linear guide, and linear guide A process of manufacturing a rail of a linear guide is described. The process includes preparing a material for a rail wherein the material has a surface formed in a convex shap and two side surface. The method includes a rolling process of forming raceway grooves i... | 10/25/2005 |
| 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 |
| 6938451 | Dynamic tapered extrusion system A hard metal or non-metal member can be formed or shaped to have varying amounts of curvature and tapering by passing the member through a forming channel defined by two sets of opposed, axially displaceable rollers which can be dynamically moved horizontally and ve... | 09/06/2005 |
| 6923035 | Method and apparatus for forming a modified conduit A conduit modifier may be used to corrugate at least a portion of a conduit. The conduit modifier may include at least a first plurality of rollers arranged in a first pattern around a passageway. The first plurality of rollers may form ridges and grooves lengthwise... | 08/02/2005 |
| 6920772 | Pinch roll unit A pinch roll unit for either propelling or retarding a product moving along the pass line of a rolling mill comprises a pair of levers mounted for rotation about parallel first axes. Roll shafts are carried by the levers with each roll shaft being journalled for rot... | 07/26/2005 |
| 6901782 | Method and apparatus for forming a modified a cross-section wire material A modified cross-section wire material is formed into piston rings such as oil-control rings for use in an engine. An apparatus of the present invention for forming the modified cross-section wire material has a forming unit (15) comprising in combination a n... | 06/07/2005 |
| 6865918 | Tube compressing roller die A tube reduction apparatus uses a pair of plates, each of the plates providing an X-shaped aperture therein. The X-shaped aperture comprises two pairs of opposing slots, and each slot provides a pair of opposing grooves. The grooves are oriented at right angles to t... | 03/15/2005 |
| 6840077 | Roll stand for rolling bar-shaped or tubular material The roll stand having at least one roll shaft 2, which carries a roll 6 and is subdivided into sectional shafts 3, 4 for the purpose of being able to change the roll, comprises at least one labyrinth-seal arrangement which is arranged in an annu... | 01/11/2005 |
| 6675623 | Method and apparatus for manufacturing keystone type superconducting compacted stranded wires The present invention relates to a method and an apparatus for manufacturing keystone type superconducting compacted stranded wires. In manufacturing the keystone type superconducting compacted stranded wires, a large number of superconducting wires are s... | 01/13/2004 |
| 6658910 | Roller device and method for adjusting said device A rolling apparatus is proposed with four rolls arranged in the shape of a star whereby one drive unit each is assigned to the rolls and whereby an adjusting unit each precedes the rolls through which the rolls are arranged adjustably in a radial and an a... | 12/09/2003 |
| 6568056 | Hot continuous-rolling system with vertical-roll stand A rolling system has a plant producing a plurality of continuously advancing and parallel hot metal strands, a vertical-roll stand receiving the strands, and a horizontal-roll stand. The vertical-roll stand has an upstream row of vertical pairs of rolls a... | 05/27/2003 |
| 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 |
| 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 |
| 6490900 | Pipe gauging and rounding apparatus and method Apparatus and method for gauging and rounding, at room temperature, a section of fully formed seamless ductile iron pipe that has an out-of-round initial cross-section profile and/or a larger than desired initial gauge. The apparatus includes a set of hou... | 12/10/2002 |
| 6484388 | Sequential roll-forming process for a stator A process to perform a flaring operation on a rotating electrical device (stator) designed with a number of these spaced axially oriented splines around its perimeter. The design of the stator requires that these perimeter splines possess a flared outer e... | 11/26/2002 |
| 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 |
| 6397650 | Roll stand for bar and wire rod rolling mill The present invention relates to a roll stand for bar and wire rod rolling mill, capable of being applied to various sizes of bars and wire rods by a small number of housing block sets, permitting maintenance work therefor to be carried out easily, and ha... | 06/04/2002 |
| 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 |
| 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 |
| 6216513 | Apparatus for manufacturing a rectangular-wire coil A circular wire with a circular cross section is wound on a coil reel. When a winding-form motor rotates a winding form, the circular wire is pulled and drawn from the coil reel. Rectangular forming rollers press the circular wire, so that a rectangular w... | 04/17/2001 |
| 6216520 | Rolling mill A rolling mill comprising a roll unit and a drive unit for driving the roll unit. The drive unit comprises an outer housing, a pair of large-diameter ring-like driving bevel gears disposed concentric with the pass line, an input shaft mechanism for rotati... | 04/17/2001 |
| 6209376 | Adjustable single/double shaft driven metal press mill A metal rolling mill having four rolls arranged in the shape of a cross for the purpose of rolling bar, wire, tube and other specially shaped metal rolling stocks. The roll system forms the core component and includes four rolls mounted on shafts placed a... | 04/03/2001 |
| 6116071 | Rolling mill for sizing tubes or cylindrical bodies in general in the iron and steel industry The invention relates to a rolling mill for sizing tubes or cylindrical bodies such as bars, rods and so on, and is intended for the iron and steel industry. The rolling mill is made up of a multiplicity of fixed three-roll rolling units, i.e. of the type... | 09/12/2000 |
| 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 |
| 6079243 | Method of production of welding wire In manufacturing of welding wires, rough surfaces are formed on the product wires to ensure retention of applied lubricants for satisfactory feeding performance. For this purpose, steps of dry hole die drawing with an application of powder lubricants, rol... | 06/27/2000 |
| 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 |
| 5953949 | Method and apparatus for producing a metal strip having areas of different thickness over its width The invention relates to the production of a metal strip having formed-in thinner areas. To this end the strip B is drawn through a drawing nip 1, 2 formed by the end face of a working roll 3 adjusted at an angle and a support roll 4, which can take the f... | 09/21/1999 |
| 5953948 | Wire rolling apparatus In a wire rolling apparatus, a pair of first wall portions of a roll housing support the rotating shaft of a backup roll, and a second wall portion connects the pair of first wall portions to each other. Even if a large force is applied to the rotating sh... | 09/21/1999 |
| 5865055 | Spline forming die A spline forming die is made up of: upper and lower ring-shaped holders; and rollers vertically rotatably retained between the upper and lower holders and projected from a circumferential end of a holder. Using this spline forming die, splines having a st... | 02/02/1999 |
| 5857372 | Housing for cluster mills A cluster mill housing applicable to 20-high and 12-high cluster mills. The mill housing is similar in size and form to a comparable monobloc housing but is made of four distinct parts. The first part is a floor portion having a central lower roll cavity ... | 01/12/1999 |
