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| Number | Title | Issue Date |
| 8047045 | Apparatus and method for forming a tube with a tetragonal cross-section, having a reinforced end An apparatus for cold-forming a workpiece having a substantially round cross-section and an elongate body into a tube having a main portion with a substantially tetragonal cross-section and a reinforced end. The apparatus includes a die in which a received portion o... | 11/01/2011 |
| 7412866 | Tubular articles with varying wall thickness and method of manufacturing same A method for manufacturing a one-piece axle tube housing with localized sections of increased wall thickness includes providing a tube blank, inserting a mandrel having a reduced diameter profile, passing the tube through an extrusion die to conform the tube to the ... | 08/19/2008 |
| 7257982 | Apparatus for forming a beam member used as a torsion beam for the rear wheel suspension of an automobile An apparatus for forming a beam member for a torsion beam in a rear wheel suspension system of an automobile wherein said apparatus includes top and bottom dies for forming a U-shaped or V-shaped section and an extension section of the beam member, upper and lower p... | 08/21/2007 |
| 7219522 | Oval cross section metal tube producing device and producing method It is an object of the present invention to provide a novel aluminum tube of an oval cross section that has a wider range of applications and added values. A disk-shaped metal slug (21) is impact-extruded with the use of a die (14) and a punch (13 | 05/22/2007 |
| 7137281 | Process and apparatus for forming oversized circular pipe A process for forming oversized circular pipe has the steps of affixing an elliptically-shaped forming head onto a spiral pipe forming machine, driving a metal strip along the forming head such that the metal strip takes on a shape of the forming head, moving said m... | 11/21/2006 |
| 6929035 | Thin walled compartmented tubular structure and its manufacturing process Thin walled compartmented tubular structure and its manufacturing process. The elbow or T-shaped structure, includes an external wall (14)and continuous internal walls (22) made in one piece. This therefore materializes, between the inlet (10... | 08/16/2005 |
| 6926344 | Pleat or corrugation of a bellows of a connection between two hinge-linked vehicles or vehicle sections e.g., of an articulated bus The subject matter of the invention is a pleat or corrugation of a bellows of a connection between two hinge-linked vehicles or vehicle sections e.g., of an articulated bus, the corrugation or pleat in the corner zone of the bellows being comprised, for the purpose ... | 08/09/2005 |
| 6907766 | Lip forming tool for firearm magazines The present invention relates to the field of tools used to modify the magazines of firearms. A die and anvil are configured to engage and form the lips of magazines, like that of the M16A4 and M4A1, to correct damage and enhance the feed angle of rounds to improve ... | 06/21/2005 |
| 6902651 | Tube bank structure, and flow tube producing method The invention provides tube bank structure and a method of manufacturing a flow tube, which can improve the stabilization of the flow of stock in the tube bank of the headbox of a papermaking machine and prevent the development of turbulence and uneven concentration... | 06/07/2005 |
| 6752451 | Strengthening member for automobile An object of the present invention is to provide a lightweight strengthening member for an automobile, excellent in crush resistance in the axial direction and having high flexural strength. Further, another object thereof is to provide a strengthening member which ... | 06/22/2004 |
| 6725698 | Method for forming tube end At the time of spinning a tip reduced portion 3, an angle of inclination of the outer periphery of the tip reduced portion 3 with respect to an axis of a tube stock 2 is increased on a center side of the tube stock 2 and reduced on an end... | 04/27/2004 |
| 6712575 | Process for manufacturing a can with a polygonal cross section and a can with a polygonal cross section A process for manufacturing a can with a polygonal cross-section and a can with a polygonal cross-section, the process comprising the steps of milling the cylindrical lateral wall of a tubular body (10), providing said wall with a plurality of circumferential... | 03/30/2004 |
| 6655182 | Apparatus and method for reshaping tubes In a method of reshaping a tube, an apparatus is used which has a roller nip for rotating the tube, and a shaping roller assembly for altering the cross-section of the tube, for instance from round to oval.... | 12/02/2003 |
| 6637248 | Method for machining protuberance of special-shaped tube A revolution center line (C) of a roll (R) is made eccentric with respect to an axis (L) of an elliptic tube (1). The eccentric amount &3xb5; is set such that when the revolution radius of the roll (R) is gradually reduced from a state in which the roll (... | 10/28/2003 |
| 6481258 | Removable trailer hitch ball A removable trailer hitch ball in which a generally spherical configuration hollow ball with opposed upper and lower vertically aligned bore holes for removable attachment to a stud with a cross bore aligned with transversely aligned holes on opposite sid... | 11/19/2002 |
| 6397653 | Folded metal bellows A method of making a folded metal bellows wherein an n-sided mandrel is positioned within a metal tube at an initial position. A convolution is formed by: axially moving and turning the mandrel with respect to and within the tube from the initial position... | 06/04/2002 |
| 6349521 | Vehicle bumper beam with non-uniform cross section A method includes rollforming and sweeping a tubular beam with a constant longitudinal cross section, and then reforming the tubular beam 10 to form a tubular beam having a non-constant cross section. The non-constant cross sections have specific shapes c... | 02/26/2002 |
| 6325953 | Plastic working method and plastic working machine There is provided a plastic working machine for plastically working a tube by employing tube holding and spinning means for holding and spinning the plastically workable tube around the axis of the tube and first and second plastic working tools which fac... | 12/04/2001 |
| 6257041 | Method of forming a one-piece steering shaft member A method for forming a one-piece steering shaft member, such as an externally splined male steering shaft member (or yoke shaft) or an internally splined female steering shaft member (or slip yoke) is disclosed. A hollow cylindrical tube is initially prov... | 07/10/2001 |
| 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 |
| 6155092 | Apparatus and method for forming a double ended upset pipe Apparatus for and method of extruding a metal pipe having a uniform inner diameter, and forward and rearward end sections which are thicker than the middle section of the pipe. A metal billet having a bore is inserted into an open ended cylindrical bore o... | 12/05/2000 |
| 6119501 | Method of deforming an initial pipe having a circular cross-section into a U-shaped section and device for carrying out the method A method of deforming an initial pipe having a circular cross-section into an U-shaped section and a device for carrying out the method wherein the inner surface of one half of the initial pipe rests in a positively engaging manner against the inner surfa... | 09/19/2000 |
| 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 |
| 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 |
| 5834651 | Heat treated rapid response pressure gauge spring In general, the invention features a spring assembly for a gauge with a hollow metal tube that changes in volume in response to differential pressures applied across the walls. The tube has a neck connected to a fitting of the gauge, a body connected at o... | 11/10/1998 |
| 5666848 | Device for cutting and crimping pipes or tubes A crimping and cutting device for use on pipes comprises a frame (1 ) provided at one end with an anvil (4) to locate a pipe (P) during a crimping and cutting operation. The device includes a crimping head (18) and a cutting blade (28) which are movable t... | 09/16/1997 |
| 5526670 | Process and device for shaping the end of a tube with an oblong cross-section to a circular cross-section A process and device for shaping the end of a tube with an oblong cross-section to a circular cross-section, where the shaping occurs in a single radial compression stage from the exterior. The tube is disposed with its shortest axis in correspondence wit... | 06/18/1996 |
| 5431326 | Method of forming a tubular member with separate flange A hydroformed vehicle body component has an attachment flange or the like-formed as an integral part of the hydroforming process. For a given flange shape, a parting plane for the dies is established relative to which the various surfaces of the flange sh... | 07/11/1995 |
| 5394947 | Tubular hitch member ball connection for an implement Hitch ball assemblies for implement hitches are welded directly into holes formed in sidewalls of tubing ends which have been flattened to provide direct load transfer from the tubing to the implement frame. Several different flattened end cross-sectional... | 03/07/1995 |
| 5353639 | Method and apparatus for sizing multiple tubes A sizing die for sizing a plurality of micro-extruded tubes has a side fence, a clamping fence in substantial parallel relation with and movable with respect to the side fence, a base fence adjacent to and perpendicular to ends of the side fence and the c... | 10/11/1994 |
| 5339667 | Method for pinch free tube forming A method of forming an elongated box shape tubular frame member from a round tube includes the steps of: providing a lower die member having a cavity submerged substantially below the top surface of the lower die and having a cavity width equal to the wid... | 08/23/1994 |
| 5230135 | Top bar for carding machine A top bar for carding machines formed from an elongated hollow cold drawn annealed profile. The annealing relieves any stresses developed in the profile during the cold drawing and a dimensionally stable top bar results therefrom.... | 07/27/1993 |
| 5214848 | Method for making a tube for a heat exchanger A heat exchanger such as an engine cooling radiator for a motor vehicle has a tube bundle comprising a multiplicity of parallel heat exchange tubes arranged in at least one range, with each tube having a body terminating in an end portion which is receive... | 06/01/1993 |
| 5165168 | Method of making a high rise spout and spout made according to the method A method of making a water spout (20) from an elliptical preformed tube (24, 26, 28). An outlet end (30) is formed from the tube at the opposite end of a central body portion (38) from an inlet end (34). The central body portion (38) has an arcuate extent... | 11/24/1992 |
| 5070717 | Method of forming a tubular member with flange The method of forming a flanged tubular member is accomplished by sizing the tubular blank to the largest cross section circumferential measure of the desired end product and then using a hydro-forming die and process to expand any excess circumferential ... | 12/10/1991 |
| 5015383 | Slotted screen scallops for high loading pressures and method of making same An elongated screen assembly, which in various forms, is useful as a scallop in a reactor, or as an underdrain for a gravity filter system, has a cross-section in a direction normal to its axis which is at least twice as wide as it is high. A method is al... | 05/14/1991 |
| 4998871 | Apparatus for deforming plastic tubing for lining pipe Apparatus is provided for lining a pipe wherein a thermoplastic liner is initially formed in a cylindrical shape with a diameter slightly larger than the internal diameter of the pipe. The liner is temporarily deformed at an elevated temperature to a diff... | 03/12/1991 |
| 4930331 | Apparatus and method for fabricating elliptical tubing An apparatus (10) and method for fabricating metal tubing of generally elliptical shape by cold pressing round tubing stock into the desired shape. The apparatus (10) includes a first pair of opposing dies (16 and 18) secured to the platens (12and 14) of ... | 06/05/1990 |
| 4667517 | Rapid response pressure gauge spring In general, the invention features a spring assembly for a gauge comprising a hollow metal tube adapted to change in volume in response to differential pressures applied across its walls, the tube having a neck portion adapted to be connected to a fitting... | 05/26/1987 |
| 4612695 | Method of manufacturing a hollow cam shaft The method of manufacturing a lightweight, low cost hollow cam shaft includes the steps of forming an integral journal portion in a hollow pipe member by inwardly deforming a portion of the pipe member, such as by coining or spinning, the outer surface of... | 09/23/1986 |
