Patents by Inventor Volker Behrens

Volker Behrens 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: 20190035563
    Abstract: A method for producing a contact material on the basis of silver-tin oxide or silver-zinc oxide is disclosed. Tin oxide particles and/or zinc oxide particles are mixed with a powder of a metal different from silver. The mixture is heated beyond the melting point of the metal powder such that the tin oxide particles and/or zinc oxide particles are wetted with liquid metal. The mixture is exposed to an atmosphere containing oxygen and the metal is thereby oxidized. Thereafter, the mixture product formed by the oxidation step is embedded as a powder into a silver matrix. The product further relates to a corresponding contact material.
    Type: Application
    Filed: September 15, 2018
    Publication date: January 31, 2019
    Inventors: Thomas Honig, Volker Behrens, Havva Cinaroglu
  • Patent number: 8992826
    Abstract: The method relates to a method for producing a strand-like, particularly band-like semi-finished part for electrical contacts, wherein the semi-finished part has a top side intended for making the electrical contact, said top side made from a silver-based composite material in which one or multiple metal oxides or carbon are embedded, and has a carrier layer supporting the composite material made of easily solderable or weldable ignoble metal, and method having the following steps: Powder-metallurgic production of a block made from the silver-based composite material, encasing of the block made of the composite material with a powder made from the easily solderable or weldable ignoble metal, compressing the block, encased by the metal powder, to condense the metal powder, sintering the compressed block in a reducing atmosphere or in an inert atmosphere or in a vacuum, avoiding the formation of fluid eutectics from the silver of the composite material and from the non-precious metal with which the block made f
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: March 31, 2015
    Assignee: Doduco GmbH
    Inventors: Helmut Heinzel, Dirk Moog, Norbert Witulski, Stefan Dasler, Andreas Kraus, Johann Wenz, Evelin Mahle-Moessner, Volker Behrens
  • Publication number: 20110262293
    Abstract: The method relates to a method for producing a strand-like, particularly band-like semi-finished part for electrical contacts, wherein the semi-finished part has a top side intended for making the electrical contact, said top side made from a silver-based composite material in which one or multiple metal oxides or carbon are embedded, and has a carrier layer supporting the composite material made of easily solderable or weldable ignoble metal, and method having the following steps: Powder-metallurgic production of a block made from the silver-based composite material, encasing of the block made of the composite material with a powder made from the easily solderable or weldable ignoble metal, compressing the block, encased by the metal powder, to condense the metal powder, sintering the compressed block in a reducing atmosphere or in an inert atmosphere or in a vacuum, avoiding the formation of fluid eutectics from the silver of the composite material and from the non-precious metal with which the block made f
    Type: Application
    Filed: October 27, 2009
    Publication date: October 27, 2011
    Inventors: Helmut Heinzel, Dirk Moog, Norbert Witulski, Stefan Dasler, Andreas Kraus, Johann Wenz, Evelin Mahle-Moessner, Volker Behrens
  • Publication number: 20110180515
    Abstract: The invention relates to a quenching plate made of a matrix composite material, comprising a ferromagnetic phase in which a high temperature stable phase is embedded. Example of an embodiment: In order to produce the matrix composite material, 96 wt. % iron and 4 wt. % MgO are mixed. The powder mixture is pressed into green plates. The green plate are sintered and rolled into the desired thickness of 0.8 mm to 1.2 mm The rolling can be done in several rolling steps, between which the sinter plates are aged. After the last rolling step, the sinter plates are preferably aged once more. The plates produced of the matrix composite material in said way are then coated galvanically with a 5 to 10 micrometer thin electrically conductive layer, for example a copper layer.
    Type: Application
    Filed: July 8, 2009
    Publication date: July 28, 2011
    Applicant: Doduco GmbH
    Inventors: Volker Behrens, Thorsten Maldener, Thomas Honig
  • Publication number: 20080135524
    Abstract: The invention relates to a coated arc splitter made of a ferromagnetic material for use in an arcing chamber. The invention provides that the arc splitter has a layer made of a composite material consisting of at least two constituents of which the first constituent is electrically conductive, has a melting point which does not exceed that of the ferromagnetic material, and has a vaporization point which does not exceed that of the ferromagnetic material, and of which the second component has a melting point higher than that of the first constituent, and has a vaporization point higher than that of the first constituent.
    Type: Application
    Filed: July 23, 2005
    Publication date: June 12, 2008
    Applicant: AMI DODUCO GMBH
    Inventors: Volker Behrens, Thomas Honig
  • Patent number: 5822674
    Abstract: A material for electric contacts based on silver-tin oxide is obtained by mixing a powder of silver or an alloy mainly containing silver with a powder consisting mainly of tin oxide and 0.01 to 10 wt. % (in relation to the quantity of tin oxide) of an additive consisting of one or more compounds containing silver, oxygen and a metal from sub-groups II to VI of the periodic system and/or antimony, bismuth, germanium, indium and gallium, compacting the mixture and sintering it. The tin oxide may be replaced by zinc oxide.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: October 13, 1998
    Assignee: Doduco GmbH + Co. Dr. Eugen Durrwachter
    Inventors: Volker Behrens, Thomas Honig
  • Patent number: 5610347
    Abstract: The invention relates to a material for electric contacts taking silver tin-oxide as basis, consisting of silver or mainly silver-containing alloy, tin oxide and other oxides or carbides of tungsten, molybdenum, vanadium, bismuth, titanium, and/or copper.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: March 11, 1997
    Assignee: Doduco GmbH & Co. Dr. Eugen Durrwachter
    Inventors: Volker Behrens, Thomas Honig, Andreas Kraus, Karl E. Saeger, Rainer Schmidberger, Theodor Staneff
  • Patent number: 5445895
    Abstract: A powder-metallaurgically produced material or extruded semi-finished product for electric contacts of silver or a silver-based metal material with 0.5 to 10 wt. % carbon and 0 to 2 wt. % of an additional metal. The material contains powdered carbon in combination with carbon fibers in the mass ratio of 10:1 to 1:10, whereby the diameter of the powder particles is on average smaller than half the length of the fibers.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: August 29, 1995
    Assignee: Doduco GmbH & Co. Dr. Eugen Durrwachter
    Inventors: Volker Behrens, Carl L. Meyer, Karl Saeger, Thomas Honig, Roland Michal