Patents by Inventor Helmar Dannenmann

Helmar Dannenmann 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: 20220062980
    Abstract: A foundry component for an apparatus for casting or handling a metal melt includes a metallic main body which is provided in a melt-contact surface region with an anticorrosion layer structure composed of one or more superposed layers. The anticorrosion layer structure has, as a sole layer or as one of a plurality of layers, a protective woven fabric body prefabricated as flexible woven fabric body from a woven fabric material which is casting temperature resistant or a nonwoven protective layer prefabricated as pliable nonwoven layer from a fiber nonwoven material or fiber paper material which is casting temperature resistant or a protective shaped body prefabricated as rigid shaped body from a material which is casting temperature resistant.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Helmar DANNENMANN, Alexander BAESGEN
  • Patent number: 10766064
    Abstract: A casting component and method for the application of an anticorrosive layer to a substrate, such as the casting component, are provided. The casting component for a device for casting a metal melt includes a metallic basic body and a melt contact surface region which is exposed to the metal melt during casting operation. In the casting component, the metallic basic body is provided in the melt contact surface region with an anticorrosive layer which is resistant to the metal melt and which is formed, using microparticles and/or nanoparticles of one or more substances from a substance group which includes borides, nitrides and carbides of the transition metals and their alloys and also of boron and silicon and Al2O3.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: September 8, 2020
    Assignee: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Helmar Dannenmann, Juergen Kurz, Andreas Sydlo, Daniel Gerner
  • Patent number: 9233417
    Abstract: A diecasting machine casting unit includes a casting chamber body having a casting chamber with a casting material inlet and outlet. A casting piston is movable forward in a longitudinal direction in the casting chamber to discharge casting material from the casting chamber under pressure via the outlet, and is movable back, whereby casting material is feedable into the casting chamber via the inlet. The casting piston extends through a through-passage of the casting chamber body from outside into the casting chamber. An area of free space of the casting chamber is formed between an outer lateral surface of the casting piston and an inner wall surface of the casting chamber body transversely relative to the casting piston longitudinal direction by an outer cross section of the casting piston being appropriately smaller than an inner cross section of the casting chamber body.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: January 12, 2016
    Assignee: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Helmar Dannenmann, Juergen Kurz, Andreas Sydlo, Daniel Gerner
  • Publication number: 20140193635
    Abstract: A casting component and method for the application of an anticorrosive layer to a substrate, such as the casting component, are provided. The casting component for a device for casting a metal melt includes a metallic basic body and a melt contact surface region which is exposed to the metal melt during casting operation. In the casting component, the metallic basic body is provided in the melt contact surface region with an anticorrosive layer which is resistant to the metal melt and which is formed, using microparticles and/or nanoparticles of one or more substances from a substance group which includes borides, nitrides and carbides of the transition metals and their alloys and also of boron and silicon and Al2O3.
    Type: Application
    Filed: June 22, 2012
    Publication date: July 10, 2014
    Applicant: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Helmar Dannenmann, Juergen Kurz, Andreas Sydlo, Daniel Gerner
  • Patent number: 8376025
    Abstract: A casting machine system includes a first casting machine and a separate second casting machine, wherein the first casting machine is a metal-casting machine and the second casting machine is a plastic-casting machine, or the first casting machine is a plastic-casting machine and the second casting machine is a metal-casting machine. An associated process produces hybrid metal/plastic articles. The casting machine includes a transfer device for transferring a precursor product, produced by a first casting process in the first casting machine, to the second casting machine, in which a hybrid metal/plastic component is formed from the precursor product by a second casting process, and a temperature-regulating device for regulating the temperature of the precursor product in a controllable manner after its removal from the first casting machine, and before starting the second casting process.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: February 19, 2013
    Assignee: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Helmar Dannenmann, Juergen Kurz, Knut Morgenstern, Wolgang Nendel, Tino Zucker, Bernd Zimmer, Martin Kausch
  • Publication number: 20120273530
    Abstract: A diecasting machine casting unit includes a casting chamber body having a casting chamber with a casting material inlet and outlet. A casting piston is movable forward in a longitudinal direction in the casting chamber to discharge casting material from the casting chamber under pressure via the outlet, and is movable back, whereby casting material is feedable into the casting chamber via the inlet. The casting piston extends through a through-passage of the casting chamber body from outside into the casting chamber. An area of free space of the casting chamber is formed between an outer lateral surface of the casting piston and an inner wall surface of the casting chamber body transversely relative to the casting piston longitudinal direction by an outer cross section of the casting piston being appropriately smaller than an inner cross section of the casting chamber body.
    Type: Application
    Filed: November 24, 2010
    Publication date: November 1, 2012
    Applicant: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Helmar Dannenmann, Juergen Kurz, Andreas Sydlo, Daniel Gerner
  • Publication number: 20110000634
    Abstract: A casting machine system includes a first casting machine and a separate second casting machine, wherein the first casting machine is a metal-casting machine and the second casting machine is a plastic-casting machine, or the first casting machine is a plastic-casting machine and the second casting machine is a metal-casting machine. An associated process produces hybrid metal/plastic articles. The casting machine includes a transfer device for transferring a precursor product, produced by a first casting process in the first casting machine, to the second casting machine, in which a hybrid metal/plastic component is formed from the precursor product by a second casting process, and a temperature-regulating device for regulating the temperature of the precursor product in a controllable manner after its removal from the first casting machine, and before starting the second casting process.
    Type: Application
    Filed: December 19, 2008
    Publication date: January 6, 2011
    Applicant: Oskar Frech GmbH + Co. KG
    Inventors: Norbert Erhard, Helmar Dannenmann, Juergen Kurz, Knut Morgenstern, Wolfgang Nendel, Tino Zucker, Bernd Zimmer, Martin Kausch