By Twisting Axially Moving Work Patents (Class 72/64)
  • Patent number: 11801575
    Abstract: A method for manufacturing a high-torque hexagonal drill shank includes: firstly producing an air module, wherein the lower end of the air module is inserted into a molding cavity of a mold, a high-pressure air is injected into the air module, and the surface of the air module is provided with a plurality of air outlets; evenly mixing metal powder and an organic binder together; injecting obtained particulates in a heating-plasticizing state into the molding cavity by an injection molding machine to solidify and form a hexagonal drill shank blank; forming a non-cylindrical cavity inside the hexagonal drill shank blank under the action of the air module; removing the binder in the hexagonal drill shank blank by thermal decomposition; and, finally, obtaining a high-torque hexagonal drill shank by sintering and densifying.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: October 31, 2023
    Assignee: JALOR INDUSTRY CO., LIMITED
    Inventor: Ning Jiang
  • Patent number: 11072205
    Abstract: A method for manufacturing a straight steel monofilament for the reinforcement of belt ply of a pneumatic tyre, where the arc-height of the straight steel monofilament is less than 30 mm. The steel monofilament is plastically deformed by a twisting along the axis of the steel monofilament on a double-twist apparatus. The plastic twist deformation eliminates the surface stress difference on the steel monofilament and provides a strainght steel monofilament for belt ply reinforcement. This provides a simple solution with existing apparatus to manufacture straight steel monofilament suitable for tire reinforcement with high speed for mass production.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: July 27, 2021
    Assignee: NV BEKAERT SA
    Inventor: Aijun Zhang
  • Patent number: 10940527
    Abstract: A method for producing a drill includes cold forming of a rod-shaped blank to form a semifinished product having three or more rectilinear longitudinal ribs extending along a longitudinal axis of the semifinished product, introducing the longitudinal ribs into a first die and a second die in a working direction, where the first die bears against the longitudinal ribs in a direction of rotation about the longitudinal axis and the second die bears against the longitudinal ribs counter to the direction of rotation, pivoting the first die in the direction of rotation in relation to the second die in order to twist the longitudinal ribs between the first and second dies, pulling the longitudinal ribs 31 through the pivoted first die and the second die counter to the working direction in order to twist the longitudinal ribs and apply a drill head to the rear end in the working direction.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: March 9, 2021
    Assignee: Hilti Aktiengesellschaft
    Inventors: Guenter Domani, Carsten Peters, Florian Schroeder
  • Patent number: 10820911
    Abstract: The present disclosure is directed to a self-propelling surgical device and method for using the same. The device is configured to drill a hole into an object, such as a bone, and subsequently insert an implant, such as a screw or pin, into the hole. The device drills the hole and inserts the implant under its own power. The device may perform desired actions automatically or manually.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: November 3, 2020
    Assignee: Peninsula Surgical Solutions, LLC
    Inventors: Allan Michael Delman, Freidoon Rastegar, Connor Delman
  • Patent number: 10695811
    Abstract: A shear assisted extrusion process for producing cladded materials wherein a cladding material and a material to be cladded are placed in sequence with the cladded material positioned to contact a rotating scroll face first and the material to be cladded second. The two materials are fed through a shear assisted extrusion device at a preselected feed rate and impacted by a rotating scroll face to generate a cladded extrusion product. This process allows for increased through wall strength and decreases the brittleness in formed structures as compared to the prior art.
    Type: Grant
    Filed: February 17, 2018
    Date of Patent: June 30, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Vineet V. Joshi, Glenn J. Grant, Curt A. Lavender, Scott A. Whalen, Saumyadeep Jana, David Catalini, Jens T. Darsell
  • Patent number: 9205483
    Abstract: The systems and methods include a feed mechanism supplying multi-strand wire to a coil-spring winder. The coil spring typically has a plurality of turns and is resilient. The multi-strand wire is typically steel, but may be of other suitable material, or a combination of materials. The coil-spring winder receives wire from a spool of wire and forms that wire into a coil spring. Typically, but not always, the coil-spring winder cuts the coil spring to a desired length, and thereby forms a plurality of coil springs of the type that can be employed in mattresses, furniture, car seats, for industrial machines, or for any other application. To feed the coil-spring winder, the systems include a wire holder that supplies the wire to the coil-spring winder along a feed direction. The wire holder is supported for rotation about an axis that may be aligned with the feed direction. The rotation of the wire holder may be substantially synchronous with the formation of the turns of the coil spring.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: December 8, 2015
    Assignee: DREAMWELL, LTD.
    Inventors: Michael DeFranks, Michael Dimarco, Larry Banks
  • Publication number: 20140059975
    Abstract: Disclosed a reinforcement structure for reinforced concrete and methods for manufacturing thereof. In one aspect, the reinforcement structure includes a rod comprising a spiral strip having a pitch between 1.0 and 10.0 times a width of the strip and a ratio of thickness of the strip to the width of the strip in a range of 1:4 to 1:10. The surface of the spiral strip may be entirely or partially corrugated with ribs of arbitrary shape and having height in a range of 0.05% to 0.30% of the thickness of the strip. In another aspect, method for manufacturing a reinforcement structure comprises flattening a wire rod into a flat strip, corrugating it with ribs, and twisting the ribbed strip into a spiral of the specified pitch.
    Type: Application
    Filed: July 24, 2013
    Publication date: March 6, 2014
    Inventors: Chester Wright, III, Nicolai Boguslavschi, Arkady Zalan
  • Patent number: 8627696
    Abstract: Method of manufacturing a metal cable having two layers (Ci, Ce) of construction M+N, comprising an inner layer (Ci) having M wires of diameter d1 wound together in a helix at a pitch p1, M varying from 2 to 4, and an outer layer (Ce) of N wires of diameter d2, wound together in a helix at a pitch p2 around the inner layer (Ci), the method comprising the following steps performed in line: a step of assembling the M core wires by twisting to form the inner layer (Ci) at a point of assembling; downstream of the point of assembling of the M core wires, a step of sheathing the inner layer (Ci) with a diene rubber composition called “filling rubber”, in the raw state; a step of assembling the N wires of the outer layer (Ce) by twisting around the inner layer (Ci) thus sheathed; and a step of twist balancing. Also disclosed is a device for implementing such a method.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 14, 2014
    Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Establissements Michelin
    Inventors: Thibaud Pottier, Henri Barguet
  • Patent number: 8402801
    Abstract: A helical cord having an elliptical shape and the like is manufactured so that a length-to-width ratio or a dimension of a shaped form of the cord to be shaped in a longitudinal direction can be changed. A cord (C) is sequentially passed through through holes (21H, 22H) of stationary and movable shaping bodies (21, 22) opposing each other of a shaping device (20). At that time, the movable shaping body (22) is moved along the stationary shaping body (21) by a moving device so that the through holes (21H, 22H) become eccentric with respect to each other, and the cord (C) passing between the eccentric through holes (21H, 22H) is bent and deformed so as to be shaped.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: March 26, 2013
    Assignee: Bridgestone Corporation
    Inventor: Yuichiro Ogawa
  • Patent number: 8341991
    Abstract: An object of the invention is to provide a manufacturing method and an apparatus for a twisted flat bar which can prevent the pitch from becoming inconsistent and makes it possible to process a long flat bar into a twisted flat bar. A flat bar (5) is sandwiched between two round bars (7), which are positioned so as to be inclined at the same angle in different directions relative to the longitudinal direction of the flat bar from the two sides, and the above described two round bars are rotated relative to the flat bar around the rotational axis in the longitudinal direction of the flat bar, and at the same time, the flat bar is moved in the longitudinal direction of the flat bar relative to the round bars.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: January 1, 2013
    Inventor: Tsuneo Goto
  • Publication number: 20120186081
    Abstract: A flat conductor material before being formed into a flat conductor includes a in-slot conductor portion where a conductor having rectangular cross-section is continuously pre-formed in a zigzag pattern on a same plane and a plurality of conductors are so arranged as to be overlapped in the slot of the stator core, a coil end conductor portion where a plurality of conductors are arranged while overlapping as a coil end on the outside of the slot, and a bending portion which bends to connect both conductor portions. When the flat conductor is formed, the bending portions located at the opposite ends of the in-slot conductor portion are grasped by means of a pair of grasping tools, and the in-slot conductor portion is clamped by means of a twist tool in the setting process. Thereafter, the bending portions are twisted and bent into crank-shape in the machining process by displacing a predetermined axis to a predetermined direction while rotating the twist tool about the axis.
    Type: Application
    Filed: September 30, 2009
    Publication date: July 26, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki Kamatani, Kazuhiro Sato
  • Patent number: 8122750
    Abstract: A cable hanger which can alternately and continuously form a Z-winding spiral and an S-winding spiral using a hanger wire. A hanger wire is supplied from one end of a housing and sent out from the other end thereof. A plurality of spiral forming dice are accommodated in a cylindrical space in the housing. Each spiral forming die includes a bottom face forming a shape corresponding to a curvature of a spiral on a plane intersecting with an axis at right angles between an inner peripheral face of the housing and the bottom face, a Z-winding wall face forming a shape corresponding to a pitch of the Z-winding spiral inclined with respect to the plane, and an S-winding wall face forming a shape corresponding to a pitch of the S-winding spiral. The S-and Z-winding wall faces intersect each other at a central portion of the spiral forming die.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: February 28, 2012
    Assignee: Kyoei High Opt Co., Ltd.
    Inventors: Minoru Nakamura, Hiroshi Iwase
  • Patent number: 8099991
    Abstract: Taught herein is a method for molding a bistable magnetic alloy wire, comprising: processing an alloy wire by heat treatment; and processing the alloy wire by cold treatment of mechanical twisting, the mechanical twisting being a repeated twisting in a continuous state. Also taught herein is a device for molding a bistable magnetic alloy wire.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: January 24, 2012
    Inventors: Nianrong Zhang, Huijun Xu, Yun Zhu, Zhuhui Zheng, Jian Chen, Fang Yu
  • Patent number: 8099843
    Abstract: A device for molding a bistable magnetic alloy wire having a feed reel, a feed roller, a furnace, a positioning roller, a receiving roller, and a receiving reel; a winch for passing the alloy wire through is disposed between the positioning roller and the receiving roller; the winch rotates around its axis; at least three wheels are distributed along the axis of the winch; the alloy wire passes an upper tangent point and a lower tangent point of an outer circle of the wheel; and the upper tangent point and the lower tangent point are disposed on the top and the bottom of the axis of the winch, respectively.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: January 24, 2012
    Inventors: Nianrong Zhang, Huijun Xu, Yun Zhu, Zhuhui Zheng, Jian Chen, Fang Yu
  • Publication number: 20100294011
    Abstract: An object of the invention is to provide a manufacturing method and an apparatus for a twisted flat bar which can prevent the pitch from becoming inconsistent and makes it possible to process a long flat bar into a twisted flat bar. The manufacturing method for a twisted flat bar is characterized in that a flat bar (5) is sandwiched between two round bars (7), which are positioned so as to be inclined at the same angle in different directions relative to the longitudinal direction of the flat bar from the two sides, and the above described two round bars are rotated relative to the flat bar around the rotational axis in the longitudinal direction of the flat bar, and at the same time, the flat bar is moved in the longitudinal direction of the flat bar relative to the round bars.
    Type: Application
    Filed: October 8, 2008
    Publication date: November 25, 2010
    Inventor: Tsuneo Goto
  • Patent number: 7637136
    Abstract: A method of working metal in which the microstructure of metal body is rendered fine to thereby enhance the strength, ductility or homogeneity thereof; a metal body obtained by the metal working method; and a metal-containing ceramic body obtained by the metal working method. In this metal working method, the deformation resistance of metal body or metal-containing ceramic body (hereinafter referred to simply as “metal body”) is lowered locally to thereby form low deformation resistance regions in the metal body, and shear deformation of the low deformation resistance regions is effected so as to fine the microstructure of metal body. In particular, the metal body is formed in unidirectionally drawn configuration so as to produce low deformation resistance regions crossing the metal body.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: December 29, 2009
    Assignee: Rinascimetalli Ltd.
    Inventors: Zenji Horita, Katsuaki Nakamura, Koji Neishi, Michihiko Nakagaki, Kenji Kaneko
  • Publication number: 20090158798
    Abstract: Rolling the linear strip of single and laminated (multilayer) plates to produce a spiral shell, constituting part or whole wall of a cylinder and tubular element, is a procedure performed by using the forms and moulds. The stringers (beams) of round or curved stairs and their handrails are examples of spiral shells and elements constituting part of cylinder wall. Pipes with spiral joints are the example of spiral shell constituting whole wall of a cylinder and tubular element. This patent provides the design of a spiral roller machine and its relevant calculations to adjust the machine, and the procedure to roll spiral shells and elements according to the required shape.
    Type: Application
    Filed: August 6, 2008
    Publication date: June 25, 2009
    Inventor: DARYUSH FARHANGI
  • Patent number: 7458242
    Abstract: An apparatus for manufacturing a cable bolt from a cable (1) includes first and second clamps (2, 3) adapted to releasably clamp the cable (1) with the cable (1) extending along the longitudinal axis (4) of the apparatus. A first cable displacement device (12) longitudinally displaces the first clamp (2) relative to the second clamp (3) along the longitudinal axis (4). A first clamp rotation device (14) rotates the first clamp (2) relative to the second clamp (3) about the longitudinal axis (4). The apparatus also has a second clamp displacement device (19) for simultaneously longitudinally displacing the first and second clamps (2, 3) along the longitudinal axis (4).
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: December 2, 2008
    Assignee: Dywidag-Systems International Pty Limited
    Inventors: Mieczyslaw S. Rataj, Alan Henderson, Albert Taylor
  • Patent number: 7269987
    Abstract: The invention relates to a method of manufacturing a connecting device having common axial core material and a plurality of helical fins, flanges or ridges that extend outwards from the core. The method uses an elongate preform member, and comprises forcing the preform member in the axial direction of its core through a helical deformation arrangement (22) in order to deform the preform member helically.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: September 18, 2007
    Inventor: William Henry Ollis
  • Patent number: 7111483
    Abstract: Apparatus and methods are utilized to form turbulators. The apparatus includes a first mechanism for accepting a ribbon of material along an axis, a second mechanism for rotating an end of the ribbon of material, and a third mechanism for moving the second mechanism substantially parallel to the axis. The third mechanism is configured to operate independently from the operation of the second mechanism.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: September 26, 2006
    Assignee: Alco Industries
    Inventors: David King, John Deibert, Gerald Ziolkowski, Jeffrey G. Cotter
  • Patent number: 7096705
    Abstract: A shear-extrusion method of severe plastic deformation for fabrication of metal shapes with ultra-fine structures is described. The improvements of the method include unidirectional shear of any required intensity during one step processing and under high hydrostatic pressures, fabrication of long products with different cross-sections, refinement of low ductile alloys, the increase of productivity and cost reduction. The method can be realized as forward extrusion, backward extrusion, semi continuous extrusion and extrusion of hollow shapes in portal dies with a welding chamber.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: August 29, 2006
    Inventor: Vladimir M. Segal
  • Patent number: 7069757
    Abstract: The present invention relates to a twisting apparatus for an ultrafine rectangular bar, comprising: a chuck; chuck driving means; at least two vise clamps each of the vise clamps having a pressing surface capable of contacting to a side surface of the ultrafine rectangular bar; and vise clamp driving means. The chuck driving means and the vise clamp driving means are so controlled that, after the proximal end of the ultrafine rectangular bar is held by the chuck where the vise clamps are placed closely to the ultrafine rectangular bar, the chuck disengages the ultrafine rectangular bar when the vise clamps contact to the ultrafine rectangular bar and then engages again the ultrafine rectangular bar, in a ease where the vise clamps are approached closely to the ultrafine rectangular bar held by the chuck to twist the ultrafine rectangular bar upon isolating, as rotated correlatively, the chuck and the vise clamps from each other.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: July 4, 2006
    Assignee: Mani, Inc.
    Inventor: Kanji Matsutani
  • Patent number: 6804980
    Abstract: Adaptor and twister apparatus, which adapts an existing bender apparatus to also twist vertically oriented metal stock, is provided. Removing the alternate function's parts avoids interaction between them. The twister has an adjustable clamp which grips the supporting pedestal, having an attached adjustable stock bottom locator. A vertical opening in the adaptor offset from the pedestal receives stock to be twisted, and pivotably mounts a lever for twisting the stock. The stock extends along the side of the pedestal through the lever, the vertical opening and the clamp. Vertical aligned holes in the clamp and the lever, which are also aligned with the vertical opening in the adaptor, are arranged to grip the stock cross-section, which results in only the stock between these parts being twisted. The location of the clamp and bottom locator can be changed to adjust the length and the location of the twisted portion.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: October 19, 2004
    Inventor: Marshall R. Bulle
  • Publication number: 20040177665
    Abstract: The present invention relates to a twisting apparatus for an ultrafine rectangular bar, comprising: a chuck for holding a proximal end of the ultrafine rectangular bar; chuck driving means for holding or releasing the proximal end of the ultrafine rectangular bar by driving the chuck; at least two vise clamps structured to contact with and isolated from the ultrafine rectangular bar held by the chuck, each of the vise clamps having a pressing surface capable of contacting to a side surface of the ultrafine rectangular bar; vise clamp driving means for driving the vise clamps to move the vise clamps to contact with and isolated from the ultrafine rectangular bar; moving means for correlatively moving the chuck and the vise clamps along the axial center of the ultrafine rectangular bar held by the chuck; and rotating means for correlatively rotating the chuck and the vise clamps around the axial center of the ultrafine rectangular bar held by the chuck.
    Type: Application
    Filed: February 26, 2004
    Publication date: September 16, 2004
    Inventor: Kanji Matsutani
  • Patent number: 5634363
    Abstract: In a bending type mechanical descaling method, streak-like scales remain, which cause a die seizure in the subsequent drawing process. In the present invention, there is provided a quite new mechanical descaling technique capable of eliminating such streak-like scales. The new mechanical descaling method includes the step of passing a metal wire through a torsion generating portion for forcibly turning the metal wire around the axial center thereof while running the metal wire, thereby removing scales due to a difference in toughness between the metal wire and scales.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: June 3, 1997
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Tamotsu Shozaki, Kozo Katsube, Mamoru Murahashi, Katsumasa Tanaka, Yasuhiro Oki
  • Patent number: 5183442
    Abstract: A double helix is formed from two partial helices each having the same winding direction and each having an oval cross-section with nearly straight upper and lower winding legs. The facing winding arcs of the two partial helices encircle each other. The upper winding legs of the partial helices extend at a different angle with respect to the longitudinal axis of the partial helices than the lower winding legs of the respective partial helix. The upper winding legs of one partial helix extend at the same angle with respect to the longitudinal axis as the lower winding legs of the other partial helix and vice versa.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: February 2, 1993
    Assignee: Siteg Siebtechnik GmbH
    Inventor: Johannes Lefferts
  • Patent number: 5107694
    Abstract: Apparatus for twisting a strip of flat material into a helix or other suitable shape comprising one or more feed rollers adapted to feed the strip in to means for guiding and locating the strip in the plane of its longitudinal axis, and from whence the strip passes into twist rolls which are angularly rotatable with respect to the guide means and which are provided with surfaces which grip the strip and when so angularly rotated twist the strip about its longitudinal axis.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: April 28, 1992
    Assignee: Helix Reinforcements Limited
    Inventor: Ernest Kemp
  • Patent number: 4770016
    Abstract: A wire straightening method involves feeding a wire from a reel to a wire twisting and stretching mechanism, where by wire straightening elements having working surfaces in each pair of such mechanisms arranged in opposition to each other, the wire is twisted in two opposite directions to plastic deformation of the material of the wire, and simultaneously stretched to within elastic deformation of the wire material. The wire is then received by a take up reel.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: September 13, 1988
    Assignee: Belorussky Politekhnichesky Institut
    Inventors: Alexandr V. Stepanenko, Vladimir G. Voitov, Leonid S. Bezverkhy
  • Patent number: 4766751
    Abstract: An apparatus for continuously producing a tube having helical grooves in its surface comprises a first drum, a flier having an axis intersecting the axis of the first drum at right angles therewith and rotatable around the first drum, and a second drum. One of the two drums serves as a pay-off drum for paying off a tube having straight grooves in its inner surface, while the other drum serves as a take-up drum for winding thereon the helically grooved tube obtained. At one side of the pay-off drum where the paid-off straight-grooved tube is to be transferred to the flier, a device is provided for preventing the torsion of the tube produced by the rotation of the flier from being transmitted toward the pay-off drum. A correcting device is provided between the flier and the take-up drum for remedying deformation of the helically grooved tube. With the rotation of the flier, the straight-grooved tube is twisted, whereby the straight grooves are deformed to helical grooves to afford a helically grooved tube.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: August 30, 1988
    Assignee: Hamana Iron Works Co., Ltd.
    Inventors: Iwao Ueda, Sukimoto Minobu
  • Patent number: 4604884
    Abstract: An apparatus for the manufacture of a root canal reamer and a method of manufacture of the same. An apparatus for twisting reamer material has a triangular or rectangular cross-sectional opening, a chuck portion holding root part of taper-like reamer material and vice composed of a plurality of vice-claws capable of pressing side faces of reamer material while rotating. The distance between vice-claws and chuck is variable. The vice-claws adjacent to said vice are arranged alternately and are able to be moved back and forth in accordance with thickness of reamer material. The inside opening of vice varies corresponding to the sectional taper of the reamer material. The present invention also discloses a method of manufacturing a reamer which has an enlarged rake angle and a smaller relief angle than conventional reamers. This is accomplished by an inside opening dimension of the vice being a little larger than the sectional figure of the reamer material.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: August 12, 1986
    Assignee: Matsutani Seisakusho
    Inventor: Kanji Matsutani
  • Patent number: 4601187
    Abstract: Apparatus and method for twisting thin strip material such as thin aluminum strip in which the strip material is guided from a supply of strip material along a feed path 21 to a guide mechanism 11 which maintains the strip in a first plane and is then passed to two rolls 31, 32, at least one of which is driven. The rolls have on their outer circumferential edges 33, 34 grooves 41 which grip opposite edges of the strip, the rolls 31, 32 being mounted so that their axes of rotation are twisted with respect to one another whereby the strip is driven forwards by the rolls 31, 32 and twisted as it passes through the rolls to form a helically twisted strip.
    Type: Grant
    Filed: May 14, 1984
    Date of Patent: July 22, 1986
    Assignee: The Wellform Engineering Company (Sussex) Limited
    Inventors: Frank Johnson, Sidney D. Akehurst
  • Patent number: 4367641
    Abstract: A method and apparatus for bending an elongated piece, wherein the piece is fed to and held by feeding rolls and bending rolls which are spaced from each other, the piece is bent by displacing the bending rolls in directions perpendicular to the longitudinal axis of the piece and is twisted by rotating the bending rolls about the longitudinal axis of the piece.
    Type: Grant
    Filed: August 22, 1980
    Date of Patent: January 11, 1983
    Assignee: Inoue MTP Kabushiki Kaisha
    Inventor: Tomihiko Mizutani
  • Patent number: 4300378
    Abstract: A method and apparatus for forming elongated articles whereby a torque is transmitted to the deforming material as it passes through a die cavity to facilitate the reduction in the cross-section thereof as it passes therethrough. In one embodiment, the apparatus includes a rotatable die member having a longitudinally extending die cavity, the end region thereof having a reduced diameter circular cross-section. A cavity region upstream of the downstream end region has a non-circular cross-section. Means are provided for positively rotating the die member about its longitudinal axis.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: November 17, 1981
    Inventor: Sinnathamby Thiruvarudchelvan
  • Patent number: 4194380
    Abstract: A corrugated elliptical waveguide comprises a unitary, fluid-impervious, corrugated metallic tube with a substantially elliptical cross section. The corrugated tube is permanently twisted about its longitudinal axis for connecting two terminals having their E planes out of register with each other. The twist is uniformly distributed along a predetermined length of the corrugated tube. The twist is formed by twisting a corrugated circular waveguide about its longitudinal axis and simultaneously converting the circular cross section to an elliptical cross section, thereby causing the twist to be set in the elliptical waveguide.
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: March 25, 1980
    Assignee: Andrew Corporation
    Inventors: Fred Brown, Anthony D. Vinezeano
  • Patent number: 4075880
    Abstract: A method and apparatus for cold working steel lengths on a continuous basis so as to impart the cold working properties to the steel. The steel is twisted and immediately untwisted so as to impart torsional force into the steel. Tensile forces are also imparted simultaneously into the steel.
    Type: Grant
    Filed: November 12, 1976
    Date of Patent: February 28, 1978
    Assignee: Reinforcing & Allied Industries (Proprietary) Limited
    Inventor: William Raeburn Copeland
  • Patent number: 3961514
    Abstract: This invention comprehends torsional strengthening of two-phase metal materials. One application of the torsionally strengthened material is in the field of springs wherein the energy storage capacity is increased. The invention provides for methods and processes for increasing the torsional strength of two-phase metal materials. Also comprehended is an apparatus that provides the increased torsional strength by its novel combination of machines.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: June 8, 1976
    Assignee: Brunswick Corporation
    Inventor: Arthur L. Geary
  • Patent number: 3955390
    Abstract: This invention comprehends torsional strengthening of two-phase metal materials. One application of the torsionally strengthened material is in the field of springs wherein the energy storage capacity is increased. The invention provides for methods and processes for increasing the torsional strength of two-phase metal materials. Also comprehended is an apparatus that provides the increased torsional strength by its novel combination of machines.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: May 11, 1976
    Assignee: Brunswick Corporation
    Inventor: Arthur L. Geary