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| Number | Title | Issue Date |
| 8171769 | Method of forming a flanged tubular member in hydroforming A method of forming a flanged tubular member includes the steps of: positioning a tubular blank in a die; applying nominal pressure; closing the dies; and increasing pressure within the blank, thereby converting the tubular blank to a hydroformed member having the f... | 05/08/2012 |
| 7587924 | Fitting and method for manufacturing a fitting A method for manufacturing a fitting. The method steps include: providing a pipe section; pressurizing the pipe section; forming a first end of the pipe section to create a press-fit connection having a smooth-walled seat for insertion of at least one of sealing and... | 09/15/2009 |
| 7543471 | Waste gas heat exchanger The invention relates to a heat exchanger, especially a heat exchanger for motor vehicles, comprising a bank of tubes through which a gaseous medium flows and around which a liquid coolant flows. The ends of said tubes are received in tube plates and are connected t... | 06/09/2009 |
| 7454942 | Hollow molded part with closed cross-section and a reinforcement The invention relates to a hollow molded part with a closed cross-section and a reinforcement, wherein the hollow molded part is formed as a single piece and exhibits a blank mold, with the first region (1) with a first star... | 11/25/2008 |
| 7441432 | Method and a production line for manufacturing a product by hydroforming A production line for the manufacture of a product through hydroforming, having a decoiler (11) for unrolling a steel strip (12) from a coil (13), a roll-forming unit (14) for folding the steel strip into a tube (16), a welding uni... | 10/28/2008 |
| 7430804 | Apparatus and method for manufacturing heat pipe A method of manufacturing a heat pipe, including the steps of: providing a hollow body with an open end and an opposite close end; filling a predetermined quantity of working fluid into the hollow body through the open end thereof after an interior of the hollow bod... | 10/07/2008 |
| 7426845 | Hydroforming apparatus and method of assembling same A hydroforming apparatus includes a hydroforming die member and a hydroforming press. A fastener couples the press to the die member, the fastener having a shaft and a shoulder. A spacer positioned on the fastener spaces the die member from the press. The shaft is s... | 09/23/2008 |
| 7392679 | Hydroform tube sealing assembly A hydroform seal assembly includes a seal housing and an annular nozzle carried by the seal housing and sized to insert into a tube end. A first actuator moves the seal housing to insert the nozzle. A plurality of jaws are carried by the seal housing and are movable... | 07/01/2008 |
| 7380429 | Tubular local expansion apparatus and method of locally expanding tubular member for vehicles An apparatus and method for locally expanding tubular member includes a pre-form die having a cavity with an expansion chamber therein to receive a portion of a tubular blank between ends thereof. The apparatus also includes a bladder apparatus for insertion in the ... | 06/03/2008 |
| 7370504 | Method of making variable thickness tubular member for vehicles A method of making a variable thickness tubular member for a vehicle includes the steps of providing a tubular member and positioning a mandrel inside of the tubular member. The method also includes the steps of hydroforming the tubular member into a variable thickn... | 05/13/2008 |
| 7305860 | Method for tube forming A method is provided for forming a tube between a pair of dies. The tube is captured between a pair of dies having die surfaces constructed of an electrically non-conducting material defining a die cavity therein. The ends of the tube are sealed and electrical curre... | 12/11/2007 |
| 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 |
| 7275409 | Method for manufacturing a heat pipe having an enlarged portion A method for manufacturing a heat pipe having an enlarged portion includes the steps of: preparing a hollow tubular material having a uniform outer diameter; forming the tubular material with an enlarged portion having a different or larger outer diameter by narrowi... | 10/02/2007 |
| 7269986 | Method of forming a tubular blank into a structural component and die therefor A method of forming an elongated metal blank into a structural component having a predetermined outer configuration. The method includes providing a shape imparting cavity or shell section formed from a rigid material which includes an inner surface defining the pre... | 09/18/2007 |
| 7204114 | Method of progressive hydro-forming of tubular members A method of progressive hydro-forming of a tubular member includes the steps of positioning a tubular member between open die halves mating with one another to define a first tubular cavity portion in a first stage. The method also includes the steps of progressivel... | 04/17/2007 |
| 7178240 | Method for molding bicycle tube This invention relates to a method for molding a bicycle tube and the method comprises the following steps: first, providing a tube and then controlling thickness of the tube by a drawing and extruding process for forming a molding portion. Second, plasticize other ... | 02/20/2007 |
| 7155952 | Device and method for forming piping components A method and apparatus for being hollow work pieces has a pressurizing arrangement that allows the pressure to be adjusted in an internal cavity defined within the work pieces between subsequent bending operations on any one work piece. The internal cavity is define... | 01/02/2007 |
| 7152679 | Downhole tool for deforming an object A downhole tool comprises a body defining a fluid chamber, a fluid outlet for directing fluid outwardly of the chamber, and an arrangement for producing a rapid reduction in the volume of the chamber, such that fluid in the chamber is displaced rapidly through the o... | 12/26/2006 |
| 7131312 | Pipe bending apparatus and method A pipe bending apparatus for performing a pipe bending method, wherein the method includes filling a workpiece with a liquid, pressurizing the liquid to a target pressure level, and bending the workpiece to create a bent pipe. Preferably, the pressure level is inver... | 11/07/2006 |
| 7096699 | Multiple bladder internal tube expansion and method Method and apparatus for the production of a plurality of uniform expansions of a tube in a plurality of tube supports simultaneously. A plurality of tubes are expanded in apertures of tube supports in a repetitive manner, each tube being expanded into the plurality... | 08/29/2006 |
| 7080436 | Method of manufacturing an axially collapsible driveshaft A method for manufacturing a driveshaft for use in a vehicle drive train system that is axially collapsible in the event of a collision to absorb energy. A workpiece, such as a hollow cylindrical tube, is deformed by hydroforming to provide an axial collapse initiat... | 07/25/2006 |
| 7024897 | Method of forming a tubular blank into a structural component and die therefor A method of forming an elongated metal blank into a structural component having a predetermined outer configuration. The method includes providing a shape imparting cavity or shell section formed from a rigid material which includes an inner surface defining the pre... | 04/11/2006 |
| 7024898 | Method for hydroforming a hollow profile A process as claimed for the invention for internal high-pressure reshaping of a hollow section (12) in a reshaping tool, a fluid being introduced under high pressure P1 into a hollow section and this section having a transitional area with differe... | 04/11/2006 |
| 7013697 | Method for expanding a tubular blank A method for expanding tubular blanks includes pre-expanding or initially expanding a section of the tube by forcing a punch into an open end of the tube. The punching process may be repeated to achieve up to approximately 50% expansion from the original configurati... | 03/21/2006 |
| 6826943 | Process for forming tube-shaped hollow bodies made of metal A process for forming tube-shaped hollow bodies made of metal, particularly made of aluminum, is described. After forming a slab-shaped semifinished product into a closed cross-sectional profile and straight seam welding the opposing edges of the semifinished produc... | 12/07/2004 |
| 6766678 | Process for deforming a piece of thin-walled metal tube Process for deforming a piece of thin-walled metal tube, comprising the operations of bending the piece of tube with respect to its original axis, in which process the wall of the piece of tube is firstly provided, at least at the location where the bend is intended... | 07/27/2004 |
| 6763693 | Method for shaping an initial profile or a similar workpiece using an internal high pressure and profile therefor The invention relates to a method for shaping an initial profile (16a) or a similar workpiece, which comprises a profile space, into a final profile by using an internal high pressure that is generated in the sealed profile space by a flowable active m... | 07/20/2004 |
| 6725519 | Method of fabricating a gas tank A method of making a gas tank includes hydroforming two halves and welding the halves together. Two types of welds are used in welding the two halves together, tack welds for holding the two halves together, and stitch welds to complete the welding of the two halves... | 04/27/2004 |
| 6701763 | Hydroformed axle with weldless brake flange and bearing shoulder An axle assembly is provided that includes a tubular member having an outer wall and an interior cavity. The other wall includes a first interlocking feature. An axle component mounting member, such as a bearing shoulder sleeve and/or a brake flange, is a... | 03/09/2004 |
| 6698076 | Drive shaft manufacturing process A method of fabricating a driveline assembly including the steps of inserting a first member within a second member, heating the first member to a temperature greater than that of the second member and inserting both members into a die. The inner surface ... | 03/02/2004 |
| 6557233 | Method and intermediate product for producing a hollow body and a hollow body produced by said method The invention relates to method for producing a hollow body (26) from sheet metal, especially from aluminum or aluminum alloys. According to the inventive method, a substantially flat sheet metal blank (4) is provided. At least one wall intermediate eleme... | 05/06/2003 |
| 6530252 | Hydroforming method and hydroforming device A plurality of closing cylinder devices are provided between a bolster of a press machine and a bed containing a lower mold of a hydroforming device. An upper mold is attached to a slide of the press machine. The upper mold and lower mold come together to... | 03/11/2003 |
| 6418770 | Method for improving the fatigue life of a tubular stabilizer bar An autofrettage process employed on the inner surface of a tubular stabilizer bar. Road shock and other vibrations subject the stabilizer bar to tensile stresses. Tensile stresses cause fractures and decrease the fatigue life of the bar. In employing an a... | 07/16/2002 |
| 6401508 | Components of a hydroforming machine The components of a hydroforming machine include a die housing for containing a plurality of dies, a water distribution system, and a means for compressing the dies. The dies includes first and second die plates which are secured together by a key inserte... | 06/11/2002 |
| 6383442 | Apparatus for injection-molding or formation of work pieces An apparatus for injection molding or forming of work pieces, including closed profile work pieces, is provided that is less expensive and requires less space than known press apparatus. The apparatus locks a molding tool assembled from two or more tool p... | 05/07/2002 |
| 6378352 | Method and apparatus for winding thin walled tubing A system and method of winding a length of tubing into a coil. The system uses a mandrel to wind a length of tubing into the form of a coil. The length of tubing is both internally pressurized and placed under tension prior to being wound around the mandr... | 04/30/2002 |
| 6354124 | Method and apparatus for the hydraulic forming of workpieces Internal high pressure forming at present takes place by exerting a pressure between sheet metal blanks fixed by a marginal weld. It has already been proposed to deform under high internal pressure sheet metal blanks merely placed on one another in a comb... | 03/12/2002 |
| 6247344 | Method of producing a hollow profile with flange The invention concerns a method of producing a hollow profile with flange. To produce a hollow profile with flange in a simple way and to the requirements of the process, on which profile great enlargements and/or dimensional changes in cross section have... | 06/19/2001 |
| 6116074 | Extrusion arrangement and process for manufacturing hollow-profile workpieces made of metal An extrusion arrangement is disclosed for manufacturing hollow-profile workpieces made of metal, including an extrusion die which is guided in an extrusion chamber and compresses material situated in the extrusion chamber. For forming an extruded hollow p... | 09/12/2000 |
| 6112567 | Method and apparatus for manufacturing a hollow body from a tubular blank by internal high-pressure shaping The invention relates to a method for shaping a hollow body from a tubular blank inserted into a shaping tool that can be opened and closed, by internal high pressure introduced into the interior of the blank. The cross section of the blank, prior to the ... | 09/05/2000 |
