Radially Expanding Internal Tube Patents (Class 29/523)
  • Patent number: 6561077
    Abstract: The present invention relates to a system and a process for assembling a tube in a connecting element, and a housing for a braking assistance servomotor, in a device for controlling braking including such a system. The system for assembling a tube (10) with a female connecting element (11) comprising a longitudinal bore (14) provided with a transversal shoulder (14a), system in which a hollow end portion (18) of the tube is inserted in the said bore in abutment against its shoulder, is characterized by the fact that the longitudinal wall of the said end portion comprises a zone (23) deformed by compression between the said shoulder and the remainder of the tube and deformed transversally within the internal wall of the bore to provide mechanical connection and tightness between the tube and the connecting element.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: May 13, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Philippe Georges Castel, Michael William Fanelli, Daniel Lordier, Michel Jean Vermoesen
  • Patent number: 6546779
    Abstract: A tool for forming an armature guide eyelet. The tool having a body with a working end, a support end and at least one sizing rib disposed along a longitudinal axis. The at least one sizing rib has a perimeter having a first portion and a second portion. The first portion has a substantially constant distance Dc, from the longitudinal axis. The second portion has a varying distance Dv from the longitudinal axis. Also, a method for forming the armature guide eyelet with the tool. The method including aligning at least one non-uniform sizing rib and an armature guide eyelet having a constant inner diameter along a longitudinal axis and forming the constant inner diameter of the armature guide eyelet into a non-uniform inner diameter with the at least one non-uniform sizing rib.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: April 15, 2003
    Assignee: Siemens Automotive Corporation
    Inventor: Jack David Oliver
  • Patent number: 6543636
    Abstract: Process for manufacturing a metal can with a threaded neck on which a removable head can be fitted, includes the steps of forming a can with a closed bottom end, a cylindrical wall and an open top end, forming a neck at the open top end, obtaining a ring with a spindle hole of known diameter and a threaded external surface, sleeve fitting the ring by driving the spindle hole over the neck, and plastically expanding the neck by an amount sufficient that its outer diameter exceeds the diameter of the spindle hole when unstressed.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: April 8, 2003
    Assignee: Cebal, S.A.
    Inventors: Franck Flecheux, Jacques Granger, Bernard Schneider
  • Patent number: 6519851
    Abstract: A method for manufacturing an air-gap-insulated exhaust pipe having a branch stub, as well as an exhaust pipe produced according to such a method and a tool for forming such an exhaust pipe. Two tubes are inserted into one another to form a double tube. The double tube is placed in a first internal high-pressure shaping tool, and exposed to internal high pressure fluid such that it expands to match the contours of the engraving of the first shaping tool, and a double-walled branch stub is blown out of the double tube. The partially formed double tube is then placed in a second internal high-pressure shaping tool, with the double tube being surrounded, between the two ends including the branch stub, circumferentially and throughout by a corresponding design of the engraving, by an expansion chamber.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: February 18, 2003
    Assignee: DaimlerChrysler AG
    Inventors: Pierre Bonny, Thomas Huelsberg
  • Publication number: 20030029020
    Abstract: A method for connecting a headrest guide tube in a vehicle seat frame comprises the steps of forming a hole in the seat frame, inserting a headrest guide tube into the hole, axially compressing the tube to form a pair of rings on opposite sides of the frame wall, and then axially crushing the rings to form a pair of beads tightly clamping the headrest guide tube to the seat frame. During the crushing process, a portion of the headrest guide tube is bulged into a notch in the hole in the seat frame to prevent the guide tube from rotating with respect to the seat frame.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 13, 2003
    Inventor: Arvind Pradhan
  • Patent number: 6513232
    Abstract: A vertical pipe expander to be used to expand the pipes assembled with fins of finned heat exchangers comprises, on a supporting frame, supports for rods of pipe expanding cones, performing vertical translational motion and arranged above a seat for a heat exchanger to be subjected to pipe expansion. At least one cone supporting rod magazine is further provided that is arranged vertically with the cones directed downward, for arrangement, during machine setup, at the seat, the supports for the rods being constituted by a rod engaging and supporting device. The rod engagement and support device is associated with a device for selecting the rods of the magazine to be engaged or released.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: February 4, 2003
    Assignee: C.M.S. Costruzione Macchine Speciali S.r.l.
    Inventor: Vinicio Maggiolo
  • Patent number: 6505389
    Abstract: In the present invention, at least one tubular blank and at least one article such as a metal stamping, to be attached to a hydroformed part, are loaded into a die. The tube is hydroformed using typical methods. The article is positioned in the die such that, when. the tube is hydroformed, the final hydroformed tube contacts the article at least at a point. Attachment means, such as a laser welder, are provided with access to the contact point between the article and the hydroformed tube so that a tack weld or other attachment can be made between the article and the hydroformed tube while still in the closed die. The hydroformed tube and attached article are then removed as a joint assembly from the die.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: January 14, 2003
    Assignee: F&P Mfg., Inc.
    Inventors: Murray R. Manson, Neil Brereton
  • Patent number: 6497030
    Abstract: A method of manufacturing a sleeve mechanism without the use of machines by using a hydroforming process. The method includes the steps of providing an inner sleeve, an intermediate sleeve, and an outer sleeve concentrically within one another. The concentric sleeves are then expanded by using a hydroforming process such that an external thread is formed on the inner sleeve and an internal thread is formed on the outer sleeve. After the hydroforming process, the intermediate sleeve is removed by using any desired manner, such as melting or chemical dissolution. The relatively small space remaining between the inner and outer sleeves allow them to freely rotate about each other to ensure smooth operation of the screw and sleeve mechanism. Alternatively, the inner and outer sleeves may be hydroformed in separate operations.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: December 24, 2002
    Assignee: Dana Corporation
    Inventor: Richard A. Marando
  • Patent number: 6484384
    Abstract: A method of manufacturing a collapsible driveshaft assembly includes the steps of disposing an end of a first tube within a forming die having a non-circular cross sectional shape, expanding the end of the first tube into conformance with the die cavity, inserting an end of a second tube is inserted within the deformed end of the first tube, and expanding the end of the second tube into conformance with the end of the first tube. As a result of this expansion, outwardly extending regions and inwardly extending regions of the second tube extend into cooperation with outwardly extending regions and inwardly extending regions of the first tube so as to cause the first and second tubes to function as cooperating male and female splined members. As a result, a rotational driving connection therebetween to form the driveshaft. When a relatively large axial force is applied to the ends of the telescoping driveshaft, the second tube will move axially within the first tube, thereby collapsing and absorbing energy.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: November 26, 2002
    Assignee: Spicer Driveshaft, Inc.
    Inventors: Daniel W. Gibson, Christopher C. Cheney, Daniel C. Perry
  • Publication number: 20020157235
    Abstract: Guide-tubes for supporting the headrest of an automobile seat are lock-beaded into the top-rail of the seat-frame. The guide-tubes are formed from pieces of sheet metal, folded over to form cylindrical tubes. The edges of the sheet are interlaced, by means of dovetailing tabs and sockets, which are stamped into the side-edges of the sheet. The interlacing tabs and sockets are not present over the middle portion of the guide-tube, where the lock-beads are formed.
    Type: Application
    Filed: April 27, 2001
    Publication date: October 31, 2002
    Inventors: Alfred D. Napolitano, Jeffrey John Thomas, Matthew Richard Gleiser
  • Patent number: 6460250
    Abstract: A process for forming an elongate structural element of desired shape being of large and small cross-sectional dimensions at spaced locations along its length, the process including the steps of: (i) selecting a first tube for forming a first selected length of the element having cross-sectional dimensions within a first range of relatively small cross-sectional dimensions within the hydro-forming-elongation ratio capabilities of the material from which the first tube is formed, said first tube being of a first constant cross-sectional dimension along its length, (ii) selecting a second tube for forming a second selected length of the element adjacent to the first length, the second length of the element having cross-sectional dimensions within a second range of relatively large cross-sectional dimensions within the hydro-forming elongation ratio capabilities of the material from which the second tube is formed, said second tube being of a second constant cross-sectional dimension along its length which is
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: October 8, 2002
    Inventors: Peter Amborn, Simon Jonathan Giles Griffiths
  • Patent number: 6453539
    Abstract: An arrangement for locking a metal tube to a hose fitting in which the end of the metal tube is flared to form a generally conical tube end, and the conical tube end is inserted into a fitting to seat against an opposing conical shoulder. The portion of the fitting surrounding the tube is then plastically deformed around the tube firmly and sealingly to grasp the tube, but without scarring a corrosion resistant coating on the tube. A plurality of barbs preferably are formed on the radially outer surface of the flared end of the tube for engaging the fitting when the fitting is crimped over the flared end of the tube and thereby preventing rotation of the tube with respect to the body of the fitting. The other end of the fitting may be crimped or otherwise secured to a constituent part such as a fluid hose.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: September 24, 2002
    Assignee: Dana Corporation
    Inventor: Donald Howard Brugmann, Jr.
  • Patent number: 6454493
    Abstract: A method is provided for expanding an expandable steel tubular including the steps of: flattening the unexpanded tubular; transporting the flattened unexpanded tubular to a location at or near the site where the tubular is to be installed; unflattening the tubular before positioning the tubular at said site; and expanding the tubular along at least a substantial part of its length before or after the tubular has been positioned at said site.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: September 24, 2002
    Assignee: Shell Oil Company
    Inventor: Wilhelmus Christianus Maria Lohbeck
  • Patent number: 6446323
    Abstract: A method of forming a profile (10) in a section of tubing (12) comprises: providing an expander device (14) having at least one radially extendable expander member (22); positioning the device (14) at a predetermined location in the tubing (12); and extending the member (22) to deform the tubing (12) to create a profile (10).
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: September 10, 2002
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Paul David Metcalfe, Neil Andrew Abercrombie Simpson
  • Publication number: 20020112338
    Abstract: A method of forming a profile (10) in a section of tubing (12) comprises; providing an expander device (14) having at least one radially extendable expander member (22), positioning the device (14) at a predetermined location in the tubing (12); and extending the member (22) to deform the tubing (12) to create a profile (10).
    Type: Application
    Filed: December 22, 1999
    Publication date: August 22, 2002
    Inventors: PAUL DAVID METCALFE, NEIL ANDREW ABECROMBIE SIMPSON
  • Patent number: 6409175
    Abstract: Methods and apparatus are provided for obtaining a secure mechanical connection and a pressure-tight seal in the overlapping area of two telescoping tubular bodies. The two bodies, including the overlapping area, are radially expanded to increase the inside diameter of the bodies. The expansion forces an annular seal in the overlapping area into a pressure-sealing engagement between the bodies. A string of pipe assembled from joints secured to each other by telescoping, threadedly engaged expanded pin and box connections may be radially expanded into a surrounding well bore to provide a cased well having an internal diameter greater than the original internal diameter of the pipe string. The seal in the connection comprises an annular elastomeric seal ring and an annular Teflon spacer ring carried in a specially dimensioned groove formed in either the box or the pin, or both members of the connection.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: June 25, 2002
    Assignee: Grant Prideco, Inc.
    Inventors: M. Edward Evans, D. Scott Costa, James N. Brock
  • Patent number: 6406237
    Abstract: The fastener of the fastener and panel assembly includes a body portion received in a panel opening and a tubular barrel having a free end extending radially inwardly and a midportion bowed outwardly having a diameter greater than the panel opening. The body portion has an outside diameter greater than the inside diameter of the panel opening to form an interference fit providing torque resistance and preventing push-through of the fastener. The method of installing a fastener includes inserting the fastener body portion into the panel opening with the barrel received in a first die member and the body portion supported in the panel opening by a second die member. The end of the barrel is deformed radially inwardly and toward the body portion by the first die member and the midportion of the barrel is deformed radially outwardly preventing withdrawal of the fastener element from the panel.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: June 18, 2002
    Assignee: FabriSteel Products, Inc.
    Inventors: Stanley E. Wojciechowski, John J. Vrana
  • Patent number: 6374489
    Abstract: A method for manufacturing a camshaft by inserting a hollow shaft 3 made of steel into an axial hole 400 of a cam lobe 4 made of a sintered alloy, by expanding the hollow shaft 3 by inserting a mandrel 1 into the hollow shaft 3, and by joining and fixing the expanded hollow shaft 3 and the cam lobe 4 while avoiding the constriction that might otherwise be caused by the retraction of the mandrel 1 inserted, of the expanded hollow shaft 3. The method includes an expanding step using a diverging long face 200, which is so formed on the leading head of the mandrel 1 as to diverge at an angle of about 8 to 30 degrees with respect to the axis toward the trailing end, and a bulging portion 2 formed to lead from the diverging face 200; and an expanding step using the bulging portion 2 of the mandrel 1 and a converging short face 201 which is formed so as to lead from the bulging portion 2 and to converge at an angle of about 8 to 30 degrees with respect to the axis toward the trailing end.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: April 23, 2002
    Assignees: Akegawa Electric Corporation Co. Ltd.
    Inventor: Michihiro Yokoyama
  • Patent number: 6372315
    Abstract: A base plate for press fitting into a boss hole of a predetermined nominal diameter. The base plate has a flange and a hub extending from a region at which the hub meets the flange to an outer end of the hub. The hub has a number of vertical slots cut through the hub extending from the outer end of the hub part way or all the way to the region at which the hub meets the flange a space between slots determining boundaries of a prong. The hub has an outer diameter which is greater than the predetermined nominal diameter or alternatively the hub has an outer diameter at the region at which the hub meets the flange which is not greater than the predetermined nominal diameter, in which case each the prong extends outward to a prong outer diameter which is greater than the predetermined nominal diameter. Also the base plate may have a corner relief that circumscribes the region at which the hub meets the flange.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: April 16, 2002
    Assignee: Intri-Plex Technologies, Inc.
    Inventors: Ryan Schmidt, Kevin Hanrahan, Steve Braunheim
  • Patent number: 6372314
    Abstract: A base plate for press fitting into an actuator arm boss hole of a predetermined nominal diameter. The base plate has a flange and a hub extending from a region at which the hub meets the flange to an outer end of the hub. The hub has a number of vertical teeth protruding from the hub extending from the outer end of the hub to the region at which the hub meets the flange. The hub has an outer diameter which is greater than the predetermined nominal diameter of the actuator arm boss hole. A corner relief is provided that circumscribes the region at which the hub meets the flange.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: April 16, 2002
    Assignee: Intri-plex Technologies, Inc.
    Inventors: Ryan Schmidt, Kevin Hanrahan, Steve Braunheim
  • Patent number: 6367140
    Abstract: A device for holding sintered cams during their binding on a tube by expansion of the tube, including, for each cam, two blocks intended for enclosing the cam in housings complementary to the cam contour. The dimensions of the housings are chosen so that the play between the housings and the largest cam within a predetermined tolerance range is as close to zero as possible by excess, the two blocks being provided to bear against each other whatever the dimensions of the cam within the tolerance range.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: April 9, 2002
    Assignee: Federal-Mogul Sintered Products
    Inventor: Henri Gueydan
  • Patent number: 6368685
    Abstract: A base plate for swage fitting into a boss hole of a predetermined nominal diameter. The base plate has a flange and a hub extending from a region at which the hub meets the flange to an outer end of the hub. The hub has a number of arcuate indentations in the hub extending from the outer end of the hub part way or all the way to the region at which the hub meets the flange. During a swaging operation the indentations amplify the expansion forces from the swage tool to engage the boss hole and can achieve snap-through shape change for permanent locking. For a press-in fit the diameter of the hub is greater than the nominal diameter. During a press-in operation a tool is inserted between the actuator arms and in alignment with the base plates. The tool is then activated a reach sufficient to urge each base plate hub into a corresponding boss hole for a press fit.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 9, 2002
    Assignee: Intri-Plex Technologies, Inc.
    Inventors: Ryan Schmidt, Kevin Hanrahan
  • Patent number: 6338191
    Abstract: The headrest support tubes are secured to the seat frame member not by the usual welding, but by gripping the web of the member between two rings or lock-beads swaged into the metal of the tube. The first ring is swaged-out by compressing the tube. The tube, with the one ring, is then assembled into a through-hole in the web of the frame member. Then, the second ring is swaged into the metal of the tube, on the other side of the web, and the web lies gripped between the rings. The seat frame member may be an I-section extrusion, or a round tube with localized squeezed-flat areas, flanked by flanges.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: January 15, 2002
    Assignee: Bend All Automotive Incorporated
    Inventor: Horst Udo Petersen
  • Patent number: 6328073
    Abstract: A body that slides over an end, opposite end, and outer diameter of a conduit is presented. A passage through the body has a groove in which a seal is located. A portion of the conduit is expanded to create an interference fit with the passage, groove, and ends of the body. As a result, an enlarged outer diameter of the conduit axially interlocks with the groove and compresses the seal therein to create a fluid-tight seal. In one embodiment of the present invention, a second enlarged outer diameter of the conduit is displaced outward over the opposite of the body to help lock the body to the conduit. Additionally, an outside diameter of the body can accommodate grooves for retaining seals. These seals can create a sealed engagement to a housing or another fitting, to form a complete conduit connection. The body can take the form of a housing, a male fitting, or a female fitting.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: December 11, 2001
    Assignee: Automotive Fluid Systems, Inc.
    Inventor: Robert J. Slais
  • Patent number: 6327771
    Abstract: A reduced resistance bead seal is integrally formed on a mounting surface of two matingly engageable members to form a leak-free seal between the two members despite any eccentricity or angular variances between the two members. In one embodiment, the reduced resistance bead is formed on an inner conical flange of an inverted flared end of a hollow fluid conduit. The bead presents a deformable surface as a fitting urges the flared end of the conduit into engagement with a conical seat in a receiver where eccentricity or angular variances exist between the flared end of the conduit and the conical seat. A unique method and a unique forming tool are used to form the reduced resistance bead in the flared end of the conduit simultaneously with the flaring of the end of the conduit.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: December 11, 2001
    Assignee: ITT Industries, Inc.
    Inventors: Paul E. Anglin, Glen Gibbs
  • Publication number: 20010040167
    Abstract: Process for manufacturing a metal can (1) equipped with a threaded neck on which any type of removable head can be fitted, comprising at least the following steps:
    Type: Application
    Filed: October 8, 1999
    Publication date: November 15, 2001
    Inventors: FRANCK FLECHEUX, JACQUES GRANGER, BERNARD SCHNEIDER
  • Patent number: 6312018
    Abstract: In an apparatus for connecting tubular members together by cold forging a plurality of rollers are carried on a shaft which includes a tapered portion cooperating with the rollers to force the rollers radially outwardly to forge the tubular member into the end portion of a surrounding tubular member. The forging apparatus is provided with a gear mechanism which incrementally rotates the rollers upon completion of each reciprocal pass so that substantially all of the internal surface of the tubular member is contacted by the rollers to forge the tubular member into the end portion of the surrounding tubular member.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: November 6, 2001
    Inventor: Charles F. Martin
  • Patent number: 6286196
    Abstract: The invention relates to a process for fastening components on a hollow shaft (1), during which process the components (21, 22, 23), exhibiting an opening, are put into specified positions on the hollow shaft (1) and for the purpose of fastening components (21, 22, 23) the hollow shaft (1) is expanded by introducing a pressure medium. Support matrices (3) are arranged only between the components (21, 22, 23) for the purpose of bracing the regions of the hollow shaft (1) between the components (21, 22, 23) during the expansion operation.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: September 11, 2001
    Assignee: Erich Neumayer GmbH & Co. KG
    Inventor: Manfred Vogel
  • Patent number: 6286213
    Abstract: A method of securing intake tubes in an intake manifold is provided in which leakage of brazing material from the joint between the intake tubes and the intake tube mounting rings is prevented. For securing each intake tube in the intake manifold, the intake tube 3 is fitted into the intake tube mounting ring 5. Then, a jig 13 of a tubular shape is inserted into insert areas of the intake tube 3 and the intake tube mounting ring 5. The jig 13 includes separate sections 16 defined by slits extending to a predetermined length in parallel to the axis and has a plurality of projections 19 and 20 provided on the outer side of the separate sections 16 thereof. A bar-like pressing tool 14 reduced in the diameter towards its front end is inserted into the interior of a tubular shape of the peen locking jig 13, and it is then advanced relatively towards the insert area by the action of pressing means.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: September 11, 2001
    Assignees: Aichi Kikai Kogyo Kabushiki Kaisha, Sanoh Kogyo Kabushiki Kaisha
    Inventors: Masatoshi Hada, Yasuo Sunaga
  • Patent number: 6272728
    Abstract: A hollow self-lubricating thrust rivet or fastener is adapted to pivotably fasten first and second members to one another. The fastener is laminated on its outer surface with a self-lubricating or lubricious bearing material such as an organic polymer or plastic material. The bearing material provides the fastener with requisite lubricity to enable the members to rotate about the fastener without requiring application of a discrete lubricant to the interface of the fastener and the members. The fastener thus effectively combines the functions of a conventional fastener and a conventional bearing into a single unitary device. The fastener preferably includes an annular thrust portion laminated with the lubricious bearing material and adapted for placement between the members. The thrust portion effectively eliminates the need for installation of a discrete washer between the members.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: August 14, 2001
    Assignee: Norton Performance Plastics Corporation
    Inventors: Albert Lenac, Antoni Jan Szwedziuk, Louis V. Portelli
  • Publication number: 20010004804
    Abstract: A device and method for joining fitting parts provided with a passage opening on hollow profiles through partial expansion of the hollow profiles at the location of the fitting parts is provided. The fitting parts are slid on with the passage openings and are held in position by means of fluid high internal pressure expansion of the hollow profile. The device includes an expanding lance, which can be slid into the hollow profile and exhibits an axial borehole for the purpose of guiding the pressure fluid. The axial borehole is connected to a fluid high pressure generating system and exhibits a cross channel with an outlet for the pressure fluid in the direction of the hollow profile location to be expanded. The shell surface of the expanding lance exhibits sealing elements that are spaced apart and that define the outlet so as to seal axially on both sides against high pressure.
    Type: Application
    Filed: November 30, 2000
    Publication date: June 28, 2001
    Inventors: Henning Bloecker, Martin Kruessmann, Jochen Paus
  • Patent number: 6221506
    Abstract: The invention relates to a method of manufacturing a bushing baseplate, and to a bushing baseplate. The bushing baseplate is characterized in that it comprises tips (18) constituted by hollow tubular elements of outside diameter slightly smaller than the inside diameter of holes (16) in the plate (12) forming the bushing baseplate, which tips are subjected to a step of being expanded radially relative to their axes. The method is simpler and less expensive.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: April 24, 2001
    Assignee: Engelhard-CLAL S.A.S.
    Inventors: Jean-Paul Guerlet, Franck Pouliquen, Daniel Michel
  • Patent number: 6205661
    Abstract: A fabricating method for a one-piece refractory metal rocket engine chamber is described. Hollow liner sections of a platinum group metal or alloy are inserted into a chamber barrel portion to form the combustion chamber, connecting into a conical portion, a venturi throat and into a second conical portion, forming an expansion nozzle exit of the chamber. The hollow liner sections correspond to the interior shapes of the chamber portions. A refractory metal split hollow mandrel completes an assembly which is subjected to a hot isostatic pressing cycle. This HIP cycle expands the hollow mandrel, supporting the liner, outward against the chamber wall, pressure bonding the liner sections to the chamber portions. Scarfed edges of the liner sections are also bonded. The split mandrel is then chemically removed from the chamber resulting in a lined rocket engine chamber.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: March 27, 2001
    Inventor: Peter John Ring
  • Patent number: 6195868
    Abstract: A conveyor belt with rods and connective links that engage one another so as to resist lateral and rotational movement about the rods during conveyor operation. The links are affixed on the rods by resistance welding the rod to the link apertures. In addition to the resistance weld, the rods include diametrically enlarged protrusions or swells that are placed proximate the link apertures to constrain the links from lateral movement on the rod. At the ends of the rod, this protrusion is in the form of an upset or button head. Alternative embodiments also include rotational constraints of the links relative to the rod. The additional fixation steps such as manual welding used in conventional belt manufacture are thus eliminated. By affixing the links and rods together in the manner disclosed, repeated movements of the link legs relative to the rods are eliminated thereby significantly reducing the chances of fatigue failure of the links.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: March 6, 2001
    Assignee: Ashworth Bros., Inc.
    Inventors: Michael Etherington, William F. Funkhouser, Marshall L. Veach
  • Patent number: 6189194
    Abstract: A process for fastening at least one part, such as a cam, gear wheel, disc, etc., onto a shaft in a torsionally resistant manner. The process includes a combination of features, including threading the part with a mating play onto the shaft, the part seating on the shaft with a seating surface which has a profile of a plurality of curved spline surfaces which are preferably offset by the same angles around the circumference and gradually rise up inwards over a cylindrical reference surface and fall back down again onto the reference surface. The process also includes the feature of eliminating the mating play between the shaft and the part and the feature of turning the part relative to the shaft into an intended position for fastening after eliminating the mating play. The torque required for turning the part into an intended angular position can be measured and can serve as a check to determine if a desired frictional engagement has been achieved.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: February 20, 2001
    Assignee: DaimlerChrysler AG
    Inventor: Hans Kühl
  • Patent number: 6182361
    Abstract: A method for making a lightweight composite camshaft, includes the steps of providing at least one lightweight cam element having a lobed outer surface and a hub with a cylindrical bore, at least a portion of the hub not being radially occluded by the outer surface; providing at least one lightweight journal element having a cylindrical outer surface and a hub with a cylindrical bore, at least a portion of the hub not being radially occluded by said outer surface; providing a hollow cylindrical tubular shaft member having a diameter sized to form a snug sliding fit in the hubs of the cam element and the journal element; positioning the cam and journal elements on the shaft in required axial and radial orientations; and applying means, on the hub of each element and that portion of the shaft which is in registry with the hub, for establishing a permanent interlock to fix each element in its required axial and radial orientation on the shaft.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: February 6, 2001
    Assignee: The Torrington Company
    Inventors: Allan D. Cox, Giovanni C. Albini, Robert E. Schomburg, William A. Gordon
  • Patent number: 6183841
    Abstract: An optimized low profile swage mount or press-in fitted base plate for attachment of a suspension assembly to an actuator arm in a hard disk drive. The base plate has a base plate thickness, TBP, overall height, HH, hub inner diameter, DID, hub outer diameter, DOD, hub inner surface depth, HIS, hub radial width, WH, which is one half the hub outer diameter minus the hub inner diameter (DOD-DID)/2, and a counter bore depth Hcb.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: February 6, 2001
    Assignee: Intri-Plex Technologies, Inc.
    Inventors: Kevin Hanrahan, Ryan Schmidt
  • Patent number: 6170888
    Abstract: A conduit connection joint is formed to connect a tube (10) and afitting body (12) in fluid tight relation. The joint is made by axially compressing the tube (10) in a bore (14) in the fitting body (12) so as to cause formation of a first bead (52) in a bead formation area. Further axial compression of the tube (10) causes the sequential formation of an additional bead (54) in the bore (14) so as to provide engagement between the tube (10) and the fitting body (12). The engagement of the fitting body (12) and the tube (10) may be further strengthened by axially compressing and radially expanding the beads (52, 54).
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: January 9, 2001
    Assignee: Universal Tubular Systems, Inc.
    Inventor: Ralph G. Ridenour
  • Patent number: 6158122
    Abstract: The present invention relates to a method for making a vehicle frame member having a shock absorbing mounting portion constructed ad arranged to be mounted to a structural component within a motor vehicle. The method comprises hydroforming a tubular blank within a hydroforming die by supplying pressurized fluid to the hollow interior of the blank. A drawforming member is moved inwardly with respect to the cavity of the hydroforming die while the fluid is pressurized so that the drawforming member deforms a portion of the tubular wall inwardly to form a recessed portion having an annular side wall portion and a bottom wall portion. The formed tubular blank is then removed from the hydroforming die and a mounting structure is disposed inside the recessed portion and the blank and mounting structure are then disposed within an injection molding die. Molten shock absorbing material is injected into the recessed portion so that the molten material surrounds the mounting structure.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: December 12, 2000
    Assignee: Cosma International Inc.
    Inventor: Tommy J. Skudutis
  • Patent number: 6134767
    Abstract: The invention relates to a method and a device for embedding connection elements in a wall. The connection elements (14, 34, 50) exhibit in each case a punch-like section. The punch-like section pierces the wall (22) based on the influence of a shearing force (Fs), wherein the shearing force (Fs) opposes the pressure force (Fd) of an internal high pressure acting on the wall (2). The punch-like section remains in the wall (2) after piercing the wall (2). A wide range of connection possibilities and a high connection loadability is thereby guaranteed at a low expenditure.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: October 24, 2000
    Assignee: Meleghy Hydroforming GmbH & Co. KG
    Inventor: Bernd Schulze
  • Patent number: 6131265
    Abstract: A plastic pipe adaptor (10) includes a length of pipe (12) having a plastic pipe wall (14) with a substantially rigid pipe stiffener (32) disposed inside the pipe and a substantially rigid collar (34) disposed about the pipe exteriorly of the pipe wall (14), the collar having a recess (40) therein. The stiffener (32) and collar (34) are positioned such that a portion (50) of the plastic pipe wall is disposed between the stiffener (32) and the collar recess (40) and at least a portion (52) of the pipe stiffener is deflected outwardly against the pipe wall portion (50) by an amount sufficient to wedge the pipe wall portion (50) into engagement with the collar recess (40). The result is a firm grip to the pipe which allows the collar to serve as an attachment to another member such as a mechanical joint (30). A method of making the adaptor (10) is also described.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: October 17, 2000
    Assignee: M & FC Holding Company
    Inventor: Edwin A. Bird
  • Patent number: 6131281
    Abstract: A method of manufacturing an end assembly of an engine oil cooler with an apparatus that includes (i) a compression member having a roller surface defined thereon, (ii) a motor operatively coupled to the compression member such that the motor can rotate the compression member around a central axis of rotation, and (iii) a drive cam for urging the compression member outwardly from the central axis of rotation, wherein the end assembly includes (i) an outer component which defines a first lumen and (ii) an inner component which defines a second lumen is described.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: October 17, 2000
    Assignee: Caterpillar Inc.
    Inventor: Roy Morley
  • Patent number: 6125537
    Abstract: In order to fasten parts, such as cams, gear wheels, and discs, in a torsionally resistant manner on a hollow shaft, it is proposed to expand the shaft by pulling an expanding drift through the shaft after threading on the parts, which are provided with slight mating play, and consequently to establish at least frictional engagement between the shaft and the parts. A particularly secure connection can then be achieved when the bore of the parts is provided with a profiling into which the material of the shaft displaced by the expanding drift is pressed. Expansion of the shaft may be performed in stages by using an expanding drift having a staged increase in its effective diameter or successively using a plurality of expanding drifts of respectively larger effective diameter.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: October 3, 2000
    Inventor: Hans Kuehl
  • Patent number: 6092287
    Abstract: A rigid connection of structural parts of a motor vehicle and a tool and for establishing the connection are provided. The structural parts are fixed together after a coating during their assembly to one another in a simple, joined and effective manner without plastically deforming the respective exterior structural part and damaging the coating in the process and therefore visually impairing the visible side of the structural parts. The two structural parts to be connected are designed as oblong hollow bodies with one structural part having axially spaced radial cross-sectional reductions along the length of the connection in which the other structural part is held on it while forming a releasable plug-type connection and in that the first structural part--starting from the plug-in position. Because of the expansion between the plug-type connection points, during an internal high-pressure deforming, the parts are locked in a form-fitting manner.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: July 25, 2000
    Assignee: DaimlerChrysler AG
    Inventor: Volker Thoms
  • Patent number: 6088902
    Abstract: A method of fixing a tubular metal member in an aperture which comprises, locating the tubular metal member in the aperture and deforming the 10 metal of the tubular member to expand to extend within the confines of said aperture, which may be formed in masonry. A method of fixing two tubular metal members one to the other, is disclosed, which comprises locating a first tubular metal member (10) through a transverse aperture (12) in a second tubular metal member (11) and deforming the metal of the first member (10) to expand (13) to extend within the longitudinal passage of the second member (11) at the location of the transverse aperture (12) therethrough. A tool for carrying out the method is also disclosed.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: July 18, 2000
    Inventor: Dennis Arthur Summers
  • Patent number: 6081984
    Abstract: Members of an assembly, a first of which has an aperture and a second of which is of deformable sheet-like material, are fastened together by piercing and deforming the second member using a punch and die to provide a pierced aperture having a peripheral wall of helical form analogous to a screw-thread, assembling the members together with the apertures aligned, inserting a tubular fastener having a head and a shank into the apertures so that the head abuts a face of the first member and the shank extends through the second member, and then expanding at least part of the shank within the pierced aperture of the second member and thereby causing the peripheral wall of the pierced aperture to impress a helical peripheral groove into the external surface of the shank of the fastener. The shank can be expanded by pulling a tapering mandrel head into or through it.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: July 4, 2000
    Assignee: Avdel Textron Limited
    Inventor: Neil J Sherry
  • Patent number: 6065211
    Abstract: A method for manufacturing a part in the shape of a hollow profile is disclosed, with a hollow profile made of light metal being expanded by high internal pressure deformation. In order to be able to manufacture parts in the shape of hollow profiles based on light metals, even with high degrees of deformation, in simple fashion in a safe process, a sleeve made of a material with a greater ductility than the light metal, especially a steel material, is slid onto the hollow profile. The sleeve is located on the hollow profile in such fashion that a predetermined area of the hollow profile is covered that is to be deformed during subsequent expansion with a high degree of deformation that exceeds the expandability of the light metal.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: May 23, 2000
    Assignee: DaimlerChrysler AG
    Inventor: Arndt Birkert
  • Patent number: 6052888
    Abstract: A method of stiffening a flexible pipe using inserts or stiffeners. To account for non-uniformities and toe in of the flexible pipe, the method involves inserting a pipe stiffener into an end of the pipe and expanding the pipe stiffener within the end to a desired diameter. The stiffener is expanded using an expander, and may be sized to any desired diameter. The pipe stiffener may be expanded within the pipe until its outside diameter approximates the inside diameter of the pipe. Alternatively, the pipe stiffener may be expanded within the pipe by an expander until its inside diameter approximates the inside diameter of the pipe before the pipe stiffener is expanded within the pipe. Finally, the stiffener may be expanded within the pipe until the outside diameter of the pipe approximates the outside diameter of other pipes to be joined thereto.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: April 25, 2000
    Assignee: M & FC Holding Company, Inc.
    Inventor: Edwin A. Bird
  • Patent number: 6039502
    Abstract: A method of forming a formlocking connection of two telescopic tubes and including providing in one of the two tubes at two diametrically opposite locations, elongate cut-outs, with the cut-outs having their respective end sides limited by at least one web, providing in another one of the two tubes, at two diametrically opposite locations, longitudinally extending strips extending from an end surface of the another one of the two tubes, inserting into the elongate cut-outs of the one of the two tubes, a forming tool, and thereafter, telescopically connecting the two tubes and pushing the two tubes toward each other so that the strips are pressed against the forming tool which causes the strips to roll over the webs, and a formlocking connection obtained by this method.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: March 21, 2000
    Assignee: Etablissement Supervis
    Inventors: Dominik Naff, Rene Lorenz
  • Patent number: 6035737
    Abstract: A transmission assembly includes an inner housing member and an outer band member. The outer band member is slidingly received over the outer surface of the inner housing member. An inner surface of the outer band member includes a plurality of notches. After the outer band member is placed in a desired radial and axial alignment with the inner housing member, a plurality of deformations are lanced in the inner housing member. The deformations extend radially outward into the notches formed in the band member. The cooperation between the lanced deformations and the notches maintain the two pieces of the transmission assembly in an desired axial and radial alignment.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: March 14, 2000
    Assignee: Koppy Corporation
    Inventor: Ronald E. Prater