Patents by Inventor Volker Heuer

Volker Heuer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200348081
    Abstract: The present invention relates to devices used during the thermomechanical treatment of workpieces. During thermochemical treatment, metallic workpieces are mounted on and/or shielded by a high-temperature-resistant device configured specifically for this purpose in order to reduce dimensional and shape changes or warping. The inventive devices provide support and flow guiding for metallic workpieces during thermochemical treatment, and include a plate or a ring having a first and a second face, in which the second face is equipped with three or more support elements and the support elements are bound to a support plane.
    Type: Application
    Filed: January 29, 2019
    Publication date: November 5, 2020
    Applicant: ALD VACUUM TECHNOLOGIES GMBH
    Inventor: Volker HEUER
  • Patent number: 10626490
    Abstract: A process and apparatus for thermochemically hardening workpieces is provided incorporating the following steps, carried out in a variable sequence: one or more carburizing steps, each in a carbon-containing gas atmosphere at a pressure of less than 50 mbar, the workpieces being held at temperatures of 900 to 1050° C.; if appropriate, one or more diffusion steps, each in a gas atmosphere at a pressure of less than 100 mbar; and one or more nitriding steps, each in a nitrogen-containing discharge plasma at a pressure of less than 50 mbar, the workpieces being held at temperatures of 800 to 1050° C.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: April 21, 2020
    Assignee: ALD Vacuum Technologies GmbH
    Inventors: Volker Heuer, Klaus Löser
  • Patent number: 10196730
    Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more carburizing or heating chambers in which the workpieces are heated to a temperature of 950 to 1200° C. by means of radiation, such as direct heat radiation from a heating device.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: February 5, 2019
    Assignee: ALD Vacuum Technologies GmbH
    Inventors: Volker Heuer, Klaus Löser, Gunther Schmitt, Gerhard Welzig
  • Publication number: 20170114441
    Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more carburizing or heating chambers in which the workpieces are heated to a temperature of 950 to 1200° C. by means of radiation, such as direct heat radiation from a heating device.
    Type: Application
    Filed: December 9, 2016
    Publication date: April 27, 2017
    Inventors: Volker HEUER, Klaus LÖSER, Gunther SCHMITT, Gerhard WELZIG
  • Patent number: 9518318
    Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more carburizing chambers in which the work pieces are heated to a temperature of 950 to 1200° C. by means of direct heat radiation from a heating device.
    Type: Grant
    Filed: September 6, 2010
    Date of Patent: December 13, 2016
    Assignee: ALD Vacuum Technologies GmbH
    Inventors: Volker Heuer, Klaus Loeser, Gunther Schmitt, Gerhard Welzig
  • Publication number: 20160053359
    Abstract: A process and apparatus for thermochemically hardening workpieces is provided incorporating the following steps, carried out in a variable sequence: one or more carburizing steps, each in a carbon-containing gas atmosphere at a pressure of less than 50 mbar, the workpieces being held at temperatures of 900 to 1050° C.; if appropriate, one or more diffusion steps, each in a gas atmosphere at a pressure of less than 100 mbar; and one or more nitriding steps, each in a nitrogen-containing discharge plasma at a pressure of less than 50 mbar, the workpieces being held at temperatures of 800 to 1050° C.
    Type: Application
    Filed: April 15, 2014
    Publication date: February 25, 2016
    Inventors: Volker HEUER, Klaus LÖSER
  • Publication number: 20120168033
    Abstract: The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more cementing chambers in which the workpieces are heated to a temperature of 950 to 1200° C. by means of direct heat radiation from a heating device.
    Type: Application
    Filed: September 6, 2010
    Publication date: July 5, 2012
    Applicant: Ald Vacuum Technologies GMBH
    Inventors: Volker Heuer, Klaus Loeser, Gunther Schmitt, Gerhard Welzig
  • Publication number: 20070277912
    Abstract: An arrangement for quenching structural components in a hot gas stream with which rapid cooling of the structural components to a holding temperature takes place at which transformation of the austenitic structure to bainite occurs. The control of the process can be carried out if a thermal buffer is disposed in the cooling gas stream.
    Type: Application
    Filed: May 22, 2007
    Publication date: December 6, 2007
    Inventors: Josef Ruppel, Gerhard Welzig, Volker Heuer, Klaus Loser
  • Patent number: 6913449
    Abstract: In an apparatus for the treatment of metallic workpieces (4) with cooling gas, having a cylindrical housing (3) with an opening at the end face for introducing and removing the workpieces (4), two support plates (6, 7) extending in parallel planes vertically in the housing (3) and two air-guiding plates (14, 15) are provided, the workpiece batch (4) being held between the support plates (6, 7), and the air-guiding plates (14, 15) each forming, with the adjacent support plates (6, 7) and with the respectively adjacent inner wall of the housing, shafts (16, 17 and 26, 27, respectively) through which the cooling gas conveyed by blowers held on the housing (3) flows, controlled by reversing flaps (18, 19, 20, 21) arranged at the upper and lower ends of the air-guiding plates (14, 15).
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: July 5, 2005
    Assignee: ALD Vacuum Technologies AG
    Inventors: Klaus Loeser, Georg Stueber, Gerhard Welzig, Volker Heuer
  • Publication number: 20030175130
    Abstract: In an apparatus for the treatment of metallic workpieces (4) with cooling gas, having a cylindrical housing (3) with an opening at the end face for introducing and removing the workpieces (4), two support plates (6, 7) extending in parallel planes vertically in the housing (3) and two air-guiding plates (14, 15) are provided, the workpiece batch (4) being held between the support plates (6, 7), and the air-guiding plates (14, 15) each forming, with the adjacent support plates (6, 7) and with the respectively adjacent inner wall of the housing, shafts (16, 17 and 26, 27, respectively) through which the cooling gas conveyed by blowers held on the housing (3) flows, controlled by reversing flaps (18, 19, 20, 21) arranged at the upper and lower ends of the air-guiding plates (14, 15).
    Type: Application
    Filed: March 6, 2003
    Publication date: September 18, 2003
    Inventors: Klaus Loeser, Georg Stueber, Gerhard Welzig, Volker Heuer