Patents Assigned to Fried. Krupp GmbH
  • Patent number: 5229000
    Abstract: A method and apparatus for the separation of viscous mixtures, comprising charging the mixture with solvent to form a dispersion before extraction to improve the extraction over a simple solvent extraction. The mixture to be treated is charged with solvent before the extraction and is then sprayed into the extraction column where it is dispersed. This treatment provides extraction of highly viscous, pasty materials. The charging with solvent can take place until the mixture is saturated with the solvent, and favorable temperature and pressure conditions for charging may be provided in a charging column that is separate from the extraction column.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: July 20, 1993
    Assignee: Fried. Krupp GmbH
    Inventors: Hedi Ben-Nasr, Ernst Kriegel, Klaus Reimann
  • Patent number: 5223337
    Abstract: A tool having an extended service lift and including a hard metal body, and at least one surface layer composed of at least one hard substance selected from the group consisting of carbides, nitrides, and carbonitrides of titanium and zirconium, and having a chlorine content ranging from a finite amount up to 4 mass percent, the tool being produced by plasma-activated CVD process including: a. positioning the hard metal body in a CVD chamber having means for supplying direct voltage thereto, the hard metal body being connected to the direct voltage supplying means as a cathode thereof, b. introducing into the CVD chamber a reactive gas mixture including a nitrogen-containing substance, a carbon-containing substance, and at least one compound containing at least one of titanium and zirconium, and c.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: June 29, 1993
    Assignee: Fried. Krupp GmbH
    Inventors: Hendrikus van den Berg, Udo Konig, Ralf Tabersky, Josef Blum
  • Patent number: 5149381
    Abstract: A process for the production of a powder having a nanocrystalline structure from powders of at least two materials of the groups including metals, metallic compounds, and ceramic materials, in a composition which tends to develop an amorphous phase. The starting powders are subjected to high stresses of at least 12 G in a neutral or reducing atmosphere at about 20.degree. C. until there are no crystallites larger than about 10 nm.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: September 22, 1992
    Assignee: Fried.Krupp GmbH
    Inventors: Hans Grewe, Wolfgang Schlump
  • Patent number: 5108523
    Abstract: A shape memory alloy for repeated use, containing no noble metals. NiTiZr and NiTiZrCu shape memory alloys having A.sub.s temperature which lies above 100.degree. C. are disclosed. These shape memory alloys have the following composition: 41.5 to 54 atomic % Ni; 24 to 42.5 atomic % Ti and 7.5 to 22 atomic % Zr.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: April 28, 1992
    Assignee: Fried. Krupp GmbH
    Inventors: Jurgen Peterseim, Wolfgang Schlump
  • Patent number: 5104509
    Abstract: A method of producing layers of hard carbon modifications on a substrate includes disposing the substrate in a vacuum chamber in which an anode electrode and a cathode electrode are disposed and spaced from one another. The anode electrode is made of a carbon containing material and serves as a carbon source when a direct current is formed between the spaced electrodes. The two electrodes are energized, thereby forming a direct current arc in the vacuum between the spaced electrodes; and hydrogen is introduced directly into the region of the arc by flowing hydrogen through at least one of the two electrodes while simultaneously maintaining the arc between the electrodes to feed the arc with carbon from the anode thereby coating a surface of the substrate with a hard carbon layer.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: April 14, 1992
    Assignee: Fried. Krupp GmbH
    Inventors: Volker Buck, Wolfgang Schlump, Jurgen Willbrand
  • Patent number: 5093151
    Abstract: A plasma-activated CVD process provides improved adhesion of the coated surface layers and employs, as the plasma exciting source, a pulsed direct voltage and a residual direct voltage which remains during the pulse intervals. The residual direct voltage is equal to or greater than the lowest ionization potential of the gases participating in the CVD process, but is no more than 50% of the maximum value of the pulsed direct voltage. The total thickness of the layer(s) does not exceed 30 .mu.m and the temperature of the basic tool body during the coating process is reduced, compared to prior art plasma CVD processes, and ranges from between 400.degree. to 800.degree. C., and is preferably kept below 600.degree. C.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: March 3, 1992
    Assignee: Fried, Krupp GmbH
    Inventors: Hendrikus van den Berg, Udo Konig, Ralf Tabersky, Josef Blum
  • Patent number: 5048259
    Abstract: A manipulating apparatus closes a standard barrel by picking up a lid, positioning it in the correct position above the barrel, pressing the lid onto the barrel, picking up a clamping ring, placing it in its spread-open state around the barrel top, and locking the clamping ring so as to retain the lid. The manipulating apparatus can also be used to open a closed barrel by moving a pivot member beneath the clamping lever of the clamping ring, rotating the pivot member to unlock the clamping ring, gripping the clamping ring, removing it while it is spread open, depositing the clamping ring at some convenient location, gripping the lid, removing the lid from the barrel, and depositing the lid. The manipulating apparatus is provided with three support arms (3-5) which form a support unit (1) which is movable horizontally and vertically by a guide unit (28) together with a central carrier (2) which projects beyond the support arms.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: September 17, 1991
    Assignee: Fried. Krupp GmbH
    Inventors: Siegfried Cox, Rolf Schwerhoff, Ulrich P. Vogt
  • Patent number: 5031732
    Abstract: The shock absorber is mounted on a vehicle chassis. It comprises an outer guiding housing and a supporting member movable axially and rotatable relative to it. A hydraulic chamber is located between the guiding housing and the supporting member. This hydraulic chamber is formed by a hydraulic cylinder in this supporting member and is closed by a piston connected axially and nonrotatably with the guiding housing. The hydraulic cylinder may comprise the supporting member alone or may be a separate unit within the supporting member.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: July 16, 1991
    Assignee: Fried. Krupp GmbH
    Inventors: Peter Batek, Hans Weiskopf
  • Patent number: 5022839
    Abstract: A device for cleaning a molding tool in a plastics processing machine, for example the molding tool of hydraulic presses for pressing molded components from fiber reinforced plastics. The device including a cleaning tool which can be brought to at least one of the surfaces to be cleaned in at least one of a male mold and female mold of the molding tool. In order to be able to perform automatic cleaning of the molding tool in a minimum amount of time and simultaneously avoid the danger of damage to the tool and the machine, the cleaning tool is provided with a holder which is disposed at a carrier of the molding tool, with the movement of the holder being synchronized with the operating stroke of the machine.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: June 11, 1991
    Assignee: Fried. Krupp GmbH
    Inventor: Richard Brussel
  • Patent number: 5011594
    Abstract: A process for the continuous extraction of mixtures of organic substances including high boiling point constituents and/or constituents which do not boil but which melt with at least one solvent in the supercritical state, selected from the group consisting of CO.sub.2, propane, butane, pentane, petroleum ether, water, and having a critical temperature, T.sub.k, and a critical pressure, P.sub.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: April 30, 1991
    Assignee: Fried. Krupp GmbH
    Inventors: Eckhard Haeffner, Hedi Ben-Nasr, Bernd Knuth, Hubert Jasper, Klaus Reimann
  • Patent number: 4993834
    Abstract: A polychromator in a Paschen-Runge mounting in which intensity measurements are made by means of a row of photodiodes. The spectral intensity distribution of at least two spectral regions on the Rowland circle is transmitted to the row of photodiodes by image conductors and is measured there.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: February 19, 1991
    Assignee: Fried. Krupp GmbH
    Inventors: Christoph Carlhoff, Claus-Jurgen Lorenzen, Klaus-Peter Nick
  • Patent number: 4909303
    Abstract: A steel manufacturing system such as a mini-steel plant includes a series of treatment stations, one of which is a furnace which preferably receives scrap as the starting material. In order to significantly reduce the volume of the buildings needed for the steel manufacturing system, and thus the investment costs, the treatment stations are arranged in a furnace hall whose cross section is substantially adapted to the components of the treatment stations. With respect to the flow of material and the centers of the stations, each treatment stations is disposed along a straight line with an adjacent station. The steel manufacturing system also includes a continuous caster which is disposed in a casting hall and which receives molten steel from the furnace hall.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: March 20, 1990
    Assignee: Fried Krupp GmbH
    Inventor: Peter Meierling
  • Patent number: 4904262
    Abstract: Joint prosthesis of perforated sheet metal strips which, for the formation of a hollow shaft, are welded together and to a collar having a protrusion for attaching to a ball joint. The collar is provided with an opening leading to the inside of the hollow shaft.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: February 27, 1990
    Assignee: Fried. Krupp GmbH
    Inventor: Gunter Bensmann
  • Patent number: 4904264
    Abstract: The invention relates to an artificial joint system which, by a combination of defined pretension in the implant in the resection plane and a wholly or partially resorbable shaft or clamping system connects, after a transition period after implantation, the intermediate member of the implant with the remaining bone in the resection plane and the shaft required in the long bone during the transition period decomposes at the surface or the clamping system of the intermediate member deomposes to such an extent that unphysiological force transmission into the bone through the shaft of the implant or through the clamping system is no longer possible.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: February 27, 1990
    Assignee: Fried. Krupp GmbH
    Inventor: Rudiger Scheunemann
  • Patent number: 4898990
    Abstract: A process for the extraction of vanillin by means of the extraction from a vanillin-containing, water-containing, liquid mixture of substances with carbon dioxide at a temperature of 0.degree. to 110.degree. C. as well as a pressure of 30 to 400 bar and a subsequent separation of vanillin is described. It is contemplated that with this process the vanillin-containing carbon dioxide is passed through an aqueous hydrogen sulfite- or sulfite-solution at the extraction temperature and the extraction pressure, that this solution is subsequently acidified with sulfuric acid to a pH value of 2 to 4, and that the vanillin-free carbon dioxide is fed back into the extraction stage.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: February 6, 1990
    Assignee: Fried. Krupp GmbH
    Inventors: Hubert Coenen, Reinhard Konrad
  • Patent number: 4885530
    Abstract: A device for the early detection of breaks and/or marginal wear in the cutting edge in machine tools equipped with reversible cutting plates having at least one insulated conductor path embedded in their cutting edge, with the conductor path being in communication with a voltage source and forming part of a circuit for actuating a signal to break off a machining process. The conductor path is part of an alternating circuit which is connected with the voltage source without physical contact. An induction coil disposed in the tool is able to induce a current in a circuit closed within the cutting plate itself and this current is measured by a measuring coil disposed in the tool. In some embodiments, insulated conductor paths in the reversible cutting plate are capacitively coupled with the voltage source without contacting it.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: December 5, 1989
    Assignee: Fried Krupp, GmbH
    Inventors: Kurt Mayer, Volker Richey, Hans-Peter Schneider
  • Patent number: 4865661
    Abstract: A high strength austenitic steel having a yield strength above 600 N/mm.sup.2 at 02% permanent strain, containing about 0.5 to 1.5% by weight of nitrogen, about 6 to 12% by weight cobalt, and less than 5% by weight nickel. The steel is treated at about 1050.degree. C. to 1200.degree. C. and then quenched in water.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: September 12, 1989
    Assignee: Fried. Krupp GmbH
    Inventors: Peter Dahlmann, Johannes Jachowski, Paul Pant, Gerald Stein
  • Patent number: 4855101
    Abstract: Particles are sinter-fused onto the surface of a prosthesis shaft of titanium or titanium alloys. Before sinter-fusing, a coating material which forms below the .alpha.-.beta.-transition temperature a liquid phase with the material of the prosthesis and particles is applied to provide a coating between the shaft and particles.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: August 8, 1989
    Assignee: Fried. Krupp GmbH
    Inventors: Rudolf Mohs, Gunter Bensmann
  • Patent number: 4844747
    Abstract: A process of manufacturing a roll suitable for use in a rolling mill, the roll having a cylindrical barrel middle section and a neck at each end of the barrel, wherein the barrel and necks are of different material compositions, by remelting an electrode having a central region corresponding in mass and composition of materials to that desired for the barrel of the roll, two end regions corresponding in mass and composition of materials to that desired for the necks of the roll and a transition region disposed between the central region and each end region, each transition region including the material of the barrel and at least one further material. An electroslag remelting process is used in a water cooled mold. The mold is composed of at least two parts and defines a cavity approximating the final outlines of the roll. The mold has tapered transition regions between a part of the cavity corresponding to the barrel and the constricted cavity regions corresponding to the necks.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: July 4, 1989
    Assignee: Fried. Krupp GmbH
    Inventors: Johannes Jachowski, Paul Pant, Udo Riepe, Gerald Stein
  • Patent number: 4816079
    Abstract: A process for continuous dextrose-monohydrate crystallization whereby an evaporated concentrated liquor is mixed with a recirculated dilute phase to form a feeding liquor. At least a portion of this feeding liquor is fed through the shearing zone of a homogenizer. The sheared mother liquor is then fed to a vertical cooling-crystallizer to form a suspension. The suspension is separated into a concentrated phase and a dilute phase. The dilute phase separated from the suspension is employed as the dilute phase which is mixed with the evaporated concentrated liquor.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: March 28, 1989
    Assignee: Fried Krupp GmbH
    Inventors: Karl-Heinz Ahrens, Georg Osthaus