Patents by Inventor Wulf Pfeiffer

Wulf Pfeiffer 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).

  • Method for the production of electroplated components
    Patent number: 11021805
    Abstract: Disclosed is a method for the production of electroplated components. In the disclosed method, an edge layer of a component to be coated is subjected to a mechanical treatment in which the edge layer is deformed at least in portions, consequently the structure of the edge layer being modified at least in portions and hydrogen traps being produced in the modified portions of the edge layer.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: June 1, 2021
    Assignee: Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V.
    Inventor: Wulf Pfeiffer
  • METHOD FOR THE PRODUCTION OF ELECTROPLATED COMPONENTS AND ELECTROPLATED COMPONENT
    Publication number: 20200149177
    Abstract: Disclosed is a method for the production of electroplated components. In the disclosed method, an edge layer of a component to be coated is subjected to a mechanical treatment in which the edge layer is deformed at least in portions, consequently the structure of the edge layer being modified at least in portions and hydrogen traps being produced in the modified portions of the edge layer.
    Type: Application
    Filed: November 7, 2019
    Publication date: May 14, 2020
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.
    Inventor: Wulf PFEIFFER
  • Method of increasing the fracture toughness of the outer layer of a carbide cutting bit of a drill
    Publication number: 20110135414
    Abstract: A method of increasing fracture toughness of an outer layer of a carbide cutting bit of a drill for impact drilling of hard materials, preferably of rock or concrete. The invention is characterized by combination of the following steps: providing a drill having a finished-contoured carbide cutting bit; treating at least one partial region of the finished-contoured carbide cutting bit by introduction of mechanical energy at a surface by using a plurality of non-sharp-edged tools with a tool diameter of up to 6 mm and directing them onto the at least one partial region of the carbide cutting bit with a predetermined metered intrinsic pulse thereby carrying out deformation of the outer layer of the partial region, with introduction of only local plastic deformation into the outer layer while preventing formation of cracks within the outer layer of the treated region of the carbide cutting bit.
    Type: Application
    Filed: September 19, 2007
    Publication date: June 9, 2011
    Inventors: Wulf Pfeiffer, Till Cramer, Amo Glaser
  • Method of increasing the boundary layer strength on surfaces of workpieces made of brittle hard materials
    Publication number: 20020079602
    Abstract: A method for increasing the boundary layer strength of a workpiece made of brittle, hard material by applying a plastic deformation to a narrowly limited surface area, in order to generate internal compressive strain within a workpiece where the temperature of the workpiece is not elevated prior to the application of mechanical force.
    Type: Application
    Filed: August 14, 2001
    Publication date: June 27, 2002
    Inventor: Hans-Wulf Pfeiffer