Patents Examined by Ed Tolan
  • Patent number: 7325433
    Abstract: A press oven, especially for the pressing of dental material, includes a press stamp via which pressure can be exerted on a blank in a matrix mass of a muffle. An intermediate body is positionable between the press stamp and the blank and the heat conducting capability of the intermediate body (28) is less than that of the blank (26), the press stamp (22) or the matrix mass of the muffle (12).
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: February 5, 2008
    Assignee: Ivoclar Vivadent AG
    Inventor: Hans-Peter Foser
  • Patent number: 7325429
    Abstract: A round billet containing, by mass %, 10.50 to 14.00% of Cr with a value represented by the equation of “Cr+4Si?(22C+0.5Mn+1.5Ni+30N)” of not more than 9.0%, wherein the symbols of the elements represent the contents, by mass %, of the elements in the steel, is heated at a soaking temperature of 1100 to 1250 ° C. so that an in-furnace time (min) is not less than “0.5×Diameter of the round billet (mm)”, and then pierced and rolled with a piercing efficiency by a piercing mill of not less than 50%, a value regulated by the equation: “{(Diameter of the round billet?Roll gap at the foremost end of the plug)/Diameter of the round billet}×100” of not more than 8.0, and a plug shape represented by the equation: “Radius of foremost end of the plug (mm)/Diameter of the round billet (mm)” of 0.06 to 0.17. The thus-manufactured high-Cr seamless steel pipe or tube has excellent internal surface properties with minimized internal surface defects.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: February 5, 2008
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Kouji Nakaike, Tetsuya Nakanishi, Junji Nakata
  • Patent number: 7325430
    Abstract: Disclosed herein is a method for improving the formability of an aluminum alloy sheet by locally modifying the surface of the aluminum alloy sheet. The method comprises: a sheet fixing step of fixing a sheet to be locally surface-modified; and a local surface modification step comprising adhering a probe closely to a region of the fixed sheet, which is in need of surface modification, by the application of pressure, and then rotationally moving the probe on the region at high speed. According to the method, the region of the sheet in which a fracture can occur due to the concentration of strains and stresses during the formation of the aluminum alloy sheet into a product is subjected to local surface modification so as to improve the formability of the aluminum alloy sheet compared to the parent metal, so that the aluminum alloy sheet can be easily formed into a product.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: February 5, 2008
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Chang-Gil Lee, Sung-Joon Kim, Heung-Nam Han, Kwan-Soo Chung, Sang-Joon Park
  • Patent number: 7322221
    Abstract: The invention relates to a device for applying lubricants on the peripheral surfaces of rollers in roll stands for rolling strips, more particularly multiple roll stands with support rollers and working rollers (SW; AW), wherein the lubricants are applied in an area of the peripheral surfaces of the working cylinder (AW) which impinges upon the rolling strip (WB) located between the upper or bottom strip surface and the strippers (AS) placed against the peripheral surfaces. The improvement to said device is characterized in that the lubricant is applied by means of the application rollers (ATW) that can be pressed against the peripheral surfaces of the working roller (AW), whose periphery is impinged upon by the periphery of a coaxially mounted transmission roller (UW) on the peripheral surface of which lubricant is applied by means of spraying, splashing or dipping devices (SD; TW).
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: January 29, 2008
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Andreas Löhr, Matthias Kipping
  • Patent number: 7322224
    Abstract: A drawing method for forming a reflective curved surface by pressing a metal plate fitted in a fixed die with a movable die. The fixed die is composed of a lower die and a core, and the movable die is composed of an upper die and a presser. During the drawing, the metal plate is pressed to have a compressed border portion between a non-pressed portion and a curved surface pressed portion. It is the most desirable to compress the border portion to have a thickness which is 70% of the thickness of the metal plate before drawing.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: January 29, 2008
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Koji Ohashi, Takayoshi Mori, Michio Yamada, Koji Ooi, Hisashi Yasumatsu, Toshio Naiki, Hiromu Nakamura
  • Patent number: 7316143
    Abstract: A seamless steel tube comprising, in mass %, C: 0.30 to 0.50%, Si: 0.5% or less, Mn: 0.3 to 2.0%, P: 0.025% or less, S: 0.005% or less, Cr: 0.15 to 1.0%, Al: 0.001 to 0.05%, Ti: 0.005 to 0.05%, N: 0.02% or less, B: 0.0005 to 0.01% and O (oxygen): 0.0050% or less, wherein Beff defined in following equation (a) or (b) takes a value of 0.0001 or more, where Beff=B?10.8×(N?14×Ti/47.9)/14—(a) when Neff=N?14×Ti/47.9?0, and Beff=B—(b) when Neff=N?14×Ti/47.9<0, thus enabling to provide seamless steel tubes having excellent cold workability, hardenability, toughness and torsion fatigue strength and being most suitable for hollow shaft blanks for use in making one-piece type hollow drive shafts as well.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: January 8, 2008
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Kunio Kondo, Yuji Arai
  • Patent number: 7316142
    Abstract: The present metal spin forming head includes two sets of rollers, with each set having a series of individual metal working rollers therein. The rollers of each set are circumferentially spaced evenly about the head, with each of the rollers of the second set being evenly positioned between corresponding rollers of the first set. The second roller set may be in a non-coplanar relationship with the first roller set. The first roller set comprises rollers having relatively broad widths, for forming the general contours of the workpiece. The second roller set comprises rollers having relatively narrow rims for forming circumferential grooves in the workpiece, resulting in corresponding beads within the workpiece for securing an article therein. The rollers are controlled independently of one another by a programmable logic control capable of driving the rollers cyclically as the workpiece (or spin forming head) rotates to form non-cylindrical shapes.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: January 8, 2008
    Inventor: Paul B. Lancaster
  • Patent number: 7314417
    Abstract: A method of manufacturing hollow body elements such as nut elements for the attachment to components consisting normally of sheet metal, in particular to the manufacture of hollow body elements with an at least substantially square or rectangular outer periphery by cutting individual elements by length from a section present in the form of a bar section or a coil after prior punching of apertures in the section, optionally with subsequent formation of a thread cylinder, utilizing a progressive tool having a plurality of working stations in which respective processes are carried out is characterized in that in each working station two respective operations are carried out for the section, or for each of a plurality of sections arranged alongside one another, for each stroke of the progressive tool at the same time. A hollow body element and also a progressive tool are also claimed.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: January 1, 2008
    Assignee: Profil Verbindungstechnik GmbH & Co. KG
    Inventors: Jiri Babej, Richard Humpert, Michael Vieth
  • Patent number: 7311124
    Abstract: Method of producing spring wires shaped as a cylinder. The wire includes at least one first plurality of layers of wound fibres, the layers being disposed on top of one another and impregnated with a matrix. The first plurality of layers includes at least two stacked layers of fibres which are wound in opposing directions along two coaxial helices around the same axis to the left and right thereof respectively. The tangents to the two helices together with the axis (10) form respectively two angles having values ?x-1 and ?x which are respectively equal to ?+k? and ??? k?, ? being a function of the value of the modulus of elasticity for the spring to be produced and k being a factor of between 0 and 1. The method is suitable for the production of helical cylindrical-type spring wires for the suspension systems of motor vehicles.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: December 25, 2007
    Inventor: Max Sardou
  • Patent number: 7310983
    Abstract: A machine arrangement includes a plurality of machines arranged to cooperate with each other in a manner which comprises a machine line. This machine line incorporates apparatus which is associated with and/or comprises part of the machines for: at least one of moving, holding, manipulating and shaping cans as they pass from a can infeed to a can discharge of the machine line and move along a path having a predetermined configuration. This apparatus minimizes operations necessary for changing from a set up suitable for modifying a can having a first set of dimensions to a set up suitable for a can having a second set of dimensions.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: December 25, 2007
    Assignee: Belvac Production Machinery, Inc.
    Inventors: Joseph G. Schill, Jeffery L. Shortridge, Christopher D. Shuey, Dennis E. Green
  • Patent number: 7308813
    Abstract: A method of manufacturing a clutch housing having a boss portion and a drum portion integrally provided with the boss portion, is characterized by steps of integrally forming the boss portion and the drum portion by hot forging, and forced-cooling at least a portion of the boss portion, continuous to the integrally forming step.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: December 18, 2007
    Assignee: NSK-Warner K.K.
    Inventor: Yasuhito Koike
  • Patent number: 7308814
    Abstract: A method for perforating a sheet (1) with the aid of a stamp (3) and a matrix (2) is described, the sheet (1) being elongated before the hole punching in accordance with the setpoint diameter in the hole boundary area through bulging of the hole area. In order to be able to stamp flat perforated sheets, it is suggested that the sheet (1) be countersunk through embossing in the hole boundary area on the side diametrically opposite the matrix (2) after the hole punching to equalize internal tensions.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: December 18, 2007
    Assignee: Gassner Ges.m.b.H. & Co KG
    Inventor: Wolfgang Gassner
  • Patent number: 7308812
    Abstract: A process for producing a seamless steel pipe, in which the occurrence of inner surface flaws in the pipe can be reduced through the lowering of the friction coefficient during the elongation rolling by means of a mandrel mill is provided. The reduction of inner surface flaws is accomplished through the use of a lubricant composed mainly of either or both of graphite and mica coated to the surface of a mandrel bar, and another lubricant composed mainly of an alkali metal borate that is applied onto the inner surface of the hollow stock pipe. The temperature of the pipe prior to receiving the lubricant, during lubricant application, and prior to elongation rolling is controlled. The time between descaling or piercing and lubricant application and between lubricant application and elongation rolling is also controlled.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: December 18, 2007
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Sumio Iida, Tetsuya Nakanishi
  • Patent number: 7299670
    Abstract: A preparatory molding roll 4 having a convex push surface 41 is pushed to an outer peripheral surface of a work 1A while the work 1A is chucked by a pair of molds 2 and 3 and is rotated by applying axial propelling force, to bend inward the outer peripheral surface of the work in a radial direction. The work is then chucked by the preparatory molding roll and the upper and lower molds. Next, the preparatory molding roll is moved back and the work is crushed in the axial direction to form a bent portion 1a. A molding roll 5 is pushed to mold the outer shape of the work. A grooved roll 6 is next pushed to the outer peripheral surface of the work and a groove 1b is formed on the outer peripheral surface.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: November 27, 2007
    Assignee: Denso Corporation
    Inventors: Hiroshi Shohara, Tatsuji Hayashi, Yuji Eguchi, Shigeo Hattori
  • Patent number: 7299830
    Abstract: A cable tie installation tool tensions a cable tie about a plurality of elongated objects and severs an excess portion of the cable tie. The cable tie includes a head portion and a tail portion. The tool includes a housing having a blade guard having a front portion and an anvil portion, a tensioning mechanism operatively supported by the housing for tensioning the cable tie to a predetermined tension setting and retaining the cable tie head portion at least partially against the blade guard, and a severing mechanism including a linearly reciprocating blade for severing the excess portion of the cable tie near the head portion once the cable tie has been placed into the predetermined tension setting by the tensioning mechanism. The linearly reciprocating blade passes behind the front portion of the blade guard and in front of the anvil portion of the blade guard.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: November 27, 2007
    Assignee: Panduit Corp.
    Inventors: Robert F. Levin, Lawrence A. Hillegonds
  • Patent number: 7296454
    Abstract: An upsetting method high in productivity of an upsetting manufactured product is provided. An extruder 11 and a closed-die 20 divided into two pieces are prepared. The divided members 21 and 21 of the closed-die are combined with each other so that the tip end portion of an extrusion nozzle 13 is arranged in a cavity 25 of the closed-die 20 with the extruded raw material 1 extruded from the extrusion opening 15 of the extrusion nozzle 13 of the extruder 11. With this, the closed-die 20 is formed, and the extruded raw material 1 is clamped by and between clamping portions 22 and 22 provided at both the divided members 21 and 21.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: November 20, 2007
    Assignee: Showa Denko K K
    Inventor: Atsushi Otaki
  • Patent number: 7296450
    Abstract: A production apparatus for a tapered steel pipe which holds the two ends of the steel pipe by shafts on carriers and moves it in the axial direction while rotating it to draw it to a taper by an intermediate working roll, wherein the shaft of the working roll is inclined 20 to 40 degrees with respect to the axis of the steel pipe and a roll caliber of the working roll is made an outwardly curved surface with little difference in roll peripheral speed; the face plate for mounting the working roll is positioned and supported with respect to the body by a hinge mechanism and is fastened to the body by fastening members; and the bearing of the working roll at the side close to the steel pipe is made smaller than the bearing at the side far from the steel pipe and the two bearings are connected by a tie-rod.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: November 20, 2007
    Assignee: Nippon Steel Corporation
    Inventors: Yasuyuki Kuroda, Yukihisa Kuriyama, Manabu Ueda, Hirotoshi Hishida, Itsuroh Hiroshige, Takashi Motoyoshi
  • Patent number: 7296453
    Abstract: A method of making nano/sub-micron sized grains in a work piece material having a lateral side has the steps of providing a die. The die has an entrance channel with a longitudinal axis and an exit channel. The entrance channel and the exit channel are connected to one another to form an angle. The method has the step of providing a first sacrificial material with a complementary size to the work piece and placing the sacrificial first material and the work piece in an entrance channel. The first sacrificial material and the work piece are aligned with the longitudinal axis. The method has the step of extruding the combination of the first sacrificial material, and the work piece through the intersection of the entrance and the exit channels. The resulting shear deformation forms the nano/sub-micron sized grains in the work piece. This configuration reduces frictional effects thereby producing homogenous nano grain structure.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: November 20, 2007
    Assignee: General Electric Company
    Inventors: Ramkumar Kashyap Oruganti, Pazhayannur Ramanathan Subramanian, Judson Sloan Marte
  • Patent number: 7293443
    Abstract: A method for manufacturing a seamless pipe, capable of preventing the carburization phenomenon that occurs in a manufacturing process of pipe and simplifying an elongation rolling process, is provided. In this method, after piercing in the piercing rolling process, rolling is performed without using an inside regulating tool in the elongation rolling process, or without performing the elongation rolling followed by reducing rolling in a reducing rolling process, and thickening is then performed by use of a cold mill or cold draw bench in a cold rolling process. According to this method, the trap of graphite fine particles in the inner and outer surfaces of the pipe that took place in the conventional elongation rolling process can be minimized to prevent the carburization of the pipe. The method of the present invention is effective, particularly as a measure for preventing the carburization of an ultra-low carbon stainless steel or high alloy steel.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: November 13, 2007
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventor: Chihiro Hayashi
  • Patent number: 7290426
    Abstract: A device which is designed as a spray head and is intended for lubricating and cooling molds, in particular forging dies and tools in metal forming, is described, in which device the feed passages for coolant, compressed air and lubricant are accommodated in a common compact housing but are designed to run separately from one another, and in which spray nozzles are in each case assigned to these separate flow passages, these spray nozzles being specifically designed for spraying the lubricant and the coolant, respectively. By means of this measure, the spraying operation can be designed in an optimum manner and it becomes possible to keep the lubricant and coolant consumption low.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: November 6, 2007
    Assignee: Lechler GmbH
    Inventors: Klaus Landvatter, Hermann Lange