Patents Examined by E. Michael Combs
  • Patent number: 5085066
    Abstract: A method and system for suppressing necking and hunting of a hot rolled strip in a hot rolling line includes holding of the strip temperature at the outlet of a finishing mill at a temperature immediately above a transformation temperature. Air cooling of the strip is performed from the transformation start point to the transformation end point. The transformation end point, rapid cooling by water cooling is performed thereafter.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: February 4, 1992
    Assignee: Kawasaki Steel Corporation
    Inventors: Yuji Komami, Megumi Kan, Toshiyuki Tamai, Ttaru Hishinuma
  • Patent number: 5063767
    Abstract: A system and device for enabling the control of time intervals between billets in rolling mills of blocks or billets and/or similar equipments that allow such control is implemented using sensor controlled electronic circuits.The control system relies on a signal indicator which indicates to a mill operator the proper moment at which a billet has to be introduced in the first stand of the rolling mill. By observing a preset time interval and a real time interval indicator between billets, an effective time interval control technique for establishing an ideal spacing between billets minimizes the spacing gap guaranteeing, among other benefits, a significative increase in rolling mill productivity.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: November 12, 1991
    Inventor: Jose A. C. Drummond
  • Patent number: 5058410
    Abstract: A method and apparatus for performing forming operations on steels, metals, and alloys having low deformability and/or high resistance to deformation at room temperature, wherein the thickness of the stock material is small. In the method, stock material is heated by continuous rapid heating, to a temperature of at least 400.degree. C. and at most the AC-1 temperature of the alloy, and the heated material is subjected to a two-stage or multistage forming operation wherein the overall reduction in cross section is substantial. The apparatus includes a heating device of the electrical induction or direct contact type, followed by a temperature equalization and guide device and a multi-stand roll forming mill which may have cooling devices between each stand.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: October 22, 1991
    Assignee: Boehler Gesellschaft m.b.H.
    Inventors: Hans Losch, Johann Eilmer, Franz Rischka
  • Patent number: 5050418
    Abstract: In a bar steel rolling mill with a water-cooling segment upstream of a finishing train for thermomechanical finish rolling, respectively, one group of stands of an intermediate train or of intermediate trains, which is adjusted for rolling a larger finish cross-section than the smallest possible finish cross-section, is transferred to a stand location of the finish train, which has a water-cooling segment directly upstream of it. The finishing train for the smallest possible finished cross-section no longer needs to be refurbished to the larger finish cross-section, rather it is simply replaced by a group of stands from one or several intermediate trains, and rapid change devices are utilized for moving the strands and are all connected with each other by a pair of rails extending parallel to the rolling line up to at least one stand location of the finish train.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: September 24, 1991
    Assignee: SMS Schloemann Siemag Aktiengesellschaft
    Inventor: Johann Grotepass
  • Patent number: 5046347
    Abstract: Coolant containment apparatus for a rolling mill in which aqueous coolant liquid is sprayed onto the upper and lower work roll surfaces by upper and lower spray heads only on the exit side of the mill, including an enclosure maintained at subatmospheric pressure and surrounding the upper spray head and adjacent upper work roll and backup roll surfaces, upper and lower air dam members extending along the edges of the enclosure above and below the spray head to define narrow air gaps at the roll surfaces, slippers connected to ends of the dam members and in rubbing contact with the rolls to maintain the gap widths constant, and seal members mounted on the roll supports at the ends of the mill and cooperating with the enclosure to confine the enclosure interior.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: September 10, 1991
    Assignee: Alcan International Limited
    Inventors: Bruno Crosato, Gordon Harrison
  • Patent number: 5042279
    Abstract: There is disclosed a bending machine adapted to bend a pipe and other such workpiece in three-dimensional directions. The bending machine comprises a first actuator for vertically moving bend dies to select one of the bend dies for use, and a second actuator for horizontally moving the bend dies. The second actuator comprises a servomotor.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: August 27, 1991
    Assignee: Chiyoda Kogyo Co., Ltd.
    Inventor: Hideyuki Togoshi
  • Patent number: 5038437
    Abstract: A pair of separable hinge assemblies mount a seat cushion on a vehicle for positioning between a rearwardly folded regular seating mode and a forwardly folded stored mode. The hinge assemblies each comprise a body-half hinge plate mounted to the vehicle body and a seat-half hinge plate mounted to the seat cushion hardened undersurface. The body-half plate has upstanding side webs each formed with open end mirror image slots adapted to releasably capture a pintle pin extending transversely between parallel ear portions of the seat-half hinge plate. Each ear portion includes mirror image first and second cam shoulders adapted to frictionally retain the hinge assemblies in their respective seating or folded modes. Upon placement of the seat cusion in an intermediate position both sets of cam shoulders of each seat-half hinge plate are spaced from their associated body-half plate camming surfaces.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: August 13, 1991
    Assignee: Chrysler Corporation
    Inventors: Ronald W. Russell, Larry R. Cox, Siavash J. Jowkar
  • Patent number: 5036689
    Abstract: When a strip of e.g. hot steel is rolled by a rolling or roughing mill, scale develops on the surface of the strip which must be removed. The strip is passed over a bending roller which bends the strip and causes cracks in the scale. Then water is injected onto the strip to wash the roller and lift of the scale. Inertia then causes the water and scale to leave the surface of the strip and pass to a collection device whose water collecting surface is out of contact with the strip and on the opposite side of the bending roller from where the water is injected. In this way the time of contact of the water with the strip can be kept short and the strip is not damaged by contact with the collection device.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: August 6, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Teruo Sekiya, Tomoaki Kimura
  • Patent number: 5035019
    Abstract: A cold-forming tap is disclosed with a triangular-shaped body when viewed on end with concentric threads cut into the corners of the triangular-shaped body.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: July 30, 1991
    Assignee: North Attleboro Taps, Inc.
    Inventor: Maureen E. Dias
  • Patent number: 5033919
    Abstract: The invention comprises means to align and stabilize taps prior to the commencement of the actual cutting of the threads and to release air while tapping. On the tap a constant diameter stabilizer is placed before the tapered chamfer section of the tap. This front portion is of a diameter slightly less than the inner diameter of the hole to be tapped. The front portion is inserted into the hole and acts to align the tap and avoid cross-threading of the tapped hole. To release air trapped in a blind hole, the flutes of the tap are extended through the stabilizer portion.
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: July 23, 1991
    Inventor: Cha Y. Choe
  • Patent number: 5033181
    Abstract: Nails suitable for outdoor use, such as, for example, roofing nails, are formed from carbon steel wire precoated with a metallic layer, which has corrosion-resistant properties, such as, for example, a zinc layer applied by pre-galvanizing the stock carbon steel wire. Each nail is formed with a shank and with a head. The metallic layer is discontinuous within a region formed upon the head of each nail. The nails are collated by means of collating wires welded to the shanks of the nails. The collated nails are coiled. The coiled nails are cleaned in a cleaning bath, such as, for example, 1,1,trichloroethane. The cleaned nails are coated with a polymeric layer, which covers the region of the head of each nail where the metallic layer is discontinuous, thus restoring the corrosion-resistant properties of the nails.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: July 23, 1991
    Assignee: Illinois Tool Works Inc.
    Inventors: Geronimo Lat, William L. Gabriel, David Heminger, Lawrence S. Shelton
  • Patent number: 5031432
    Abstract: A process for rolling wire or rod material, such as hardenable steel, high speed steel and copper phosphorous alloys, includes feeding the material continuously from a supply roll through a heating zone and a rolling device for rolling the material in at least two stages, wherein the material at room temperature has a low deformation capacity unsuitable for rolling in the rolling device and therefore is heated in the heating zone to a temperature of improved deformation capacity suitable for rolling, the temperature of the material is continuously measured between the heating zone and the rolling device, a determination is made as to whether the material has been heated to a predetermined deformation temperature appropriate for rolling, diverting any portion of the material determined to have a temperature other than the appropriate rolling temperature away from the rolling device to prevent the diverted portion from entering the rolling device and being rolled, severing the diverted portion between the heati
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: July 16, 1991
    Assignee: Boehler Gesellschaft m.b.H
    Inventors: Hans Loesch, Johann Eilmer, Franz Rischka
  • Patent number: 5031262
    Abstract: A nail button and a method for manufacturing the nail button are disclosed. The nail button consists of a button cap and a base. The base comprises a collet and an attaching means associated with the collet. The collet is characterized in that it is not perforated and in that it comprises a lipped recess in the collet for joining the attaching means to the collet.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: July 16, 1991
    Assignee: Handy Button Machine Company
    Inventor: Lenard Baritz
  • Patent number: 5024076
    Abstract: The present invention concerns a method and tools for forming sheet metal, and in particular, a method for making a chase top from a stock rectangular piece of sheet metal. Creasing tools are described that each have a handle member and a creasing wheel suspended therefrom cooperates with a support lip to form first and second crease lines and first and second flange areas along each perimeter edge of the workpiece. A reinforcing ridge tool is shown having a handle member with a wheel rotatively suspended therefrom is used to indent the sheet metal along desired lines inwardly of the crease lines to form reinforcing ridges. A bending tool is described having cooperating bending members for clamping the workpiece along each second crease line for bending the workpiece there along to form vertical wall portions.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: June 18, 1991
    Inventor: Richard L. Warner
  • Patent number: 5024074
    Abstract: In conventional fabrication manufacture the thickness of the steel plates are often determined by the metal section required at the weld joints. The subject apparatus and method overcomes this problem by selectively forming a thickened edge along the edge of a thinner steel plate which can now be limited to the thickness required to withstand the stresses on the fabrication. The thickened edge is produced by forcing a plate supported by a table, by passing the plate through a forming apparatus comprised of a combination of rollers. The forming apparatus and table are automatically controlled to produce a thickened edge of constant shape along a non-linear edge of the plate.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: June 18, 1991
    Assignee: Caterpillar Inc.
    Inventors: Dennis L. Blunier, Phillip J. Shankwitz, Maurice L. Caudill, Ronald C. Bowar, Dwight E. Aussieker
  • Patent number: 5022135
    Abstract: A method for fabricating metallic conduit and the like having exterior surface details such as beads, bulges and flares by inelastic flow of the metal of an extruded blank which does not exhibit the detail. The process comprises the steps of placing a blank in a high pressure die, injecting oil or other incompressible pressure-transmitting fluid into the blank, and using advancing core punches, pressurizing the fluid to cause the metal of the blank to flow into detail cavities of the die.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: June 11, 1991
    Assignee: Brazeway, Inc.
    Inventors: Donald E. Miller, Milan A. Virsik
  • Patent number: 5020354
    Abstract: A compact rolling mill for rolling sections includes rolling stands such as universal rolling stands and two-high rolling stands arranged along several rolling lines. Provided in the rolling lines are longitudinal conveyors for transporting the rolling stock along these rolling lines and cross conveyors for transporting the rolling stock between the rolling lines. At least two universal rolling stands are combined with one two-high edging stand to define a universal tandem compact group which together with further universal stands and two-high rolling stands may be displaced from one rolling position to another rolling position in a same rolling line or in a different rolling line. The drive unit is directly coupled to the stands along the outermost rolling line while the other remaining stands are indirectly connected to the drive unit transversely across the other rolling lines via other rolling stands.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: June 4, 1991
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Dietmar Kosak, Wolfgang Ellinghaus, Hugo Feldmann, Georg Engel
  • Patent number: 5020350
    Abstract: The invention includes apparatus and method for lubricating and cooling a workpiece, dies or ironing rings, and punch at the interface between the workpiece and such dies or ironing rings and punch in forming a workpiece into a hollow closed end cylindrical article.A lubricant liquid phase is injected into a coolant liquid phase to form a "dispersion" prior to application to the metal-tool interface. Providing the lubricant as a dispersion in the coolant liquid phase rather than as an emulsion provides several advantages. The quantity of lubricant and the time of lubricant injection can be varied to control lubricity and, thus, friction. The invention makes it possible to achieve differential friction in the ironing process by having higher lubricity on the ironing die (low friction) and lower lubricity on the punch surface (high friction). Lubricities and cooling are controllable for the specific metal forming process employed to produce closed end hollow body containers.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: June 4, 1991
    Assignee: Aluminum Company of America
    Inventors: James E. Knepp, Robert E. Welsh, James A. Miller, Raymond Miller
  • Patent number: 5016456
    Abstract: Hollow billet (13) in a first operation of a piercing mill (1, 2) is advanced over a piercer (10) placed on front end (5) of a piercer rod (6) and is retracted after removal of the piercer. During the advance of hollow billet (13) a lubricant is applied to the hollow billet inside wall processed immediately before by piercer (10) with the help of an inert carrier gas current through outlet openings (16, 17) on front part (14) of piercer rod (6). In this way the lubricant is distributed uniformly on the hollow billet wall in the first operation for processing in the second operation of the piercing mill and in the latter for processing in a third operation (in a reeling mill). Thus, no delay whatsoever occurs in the processing, i.e., the operations can be performed without interruption successively, and no environmental pollution by the agent occurs.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: May 21, 1991
    Assignee: Lonza Ltd.
    Inventors: Hansjorg Furrer, Raimo Peltoniemi, Norbert Richle, Dietrich Ulrich
  • Patent number: 5016459
    Abstract: A pair of slit type horizontal fin rolls (18) and a pair of vertical side rolls (19) having such a shape as having the conventional vertical side roll (19) formed by contracting its center portion are utilized, and due to the construction in which one set of each horizontal fin roll (18) and vertical side roll (19) adjustable horizontally, the depressing force is not applied to the material, and since the edge is restrained and shifted widthwise only with the horizontal force of the vertical side rolls (19) rotating freely, threading can be conducted very smoothly irrespective of the sectional shape of the material after break down, and even if the material size is changed, the threading can be conducted very smoothly without adjusting the roll position as strictly as in the past.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: May 21, 1991
    Assignee: Nakata Manufacture Company Limited
    Inventor: Ryosuke Kuramoto