Patents by Inventor Ralph KALTHOFF

Ralph KALTHOFF 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: 20210178519
    Abstract: The invention relates to a method for producing a welding assembly (2, 8), in particular a housing of an electrical machine (1). A first, cold-formed joining partner (2), which is formed from a cold-formable first aluminium alloy having a low silicon content, and a second joining partner (8) formed from a second aluminium alloy having an increased silicon content as compared to the first aluminium alloy are provided. Said joining partners are joined by means of laser beam welding. The silicon content of the second aluminium alloy is increased relative to the first aluminium alloy in such a way that a silicon content of at least approximately 3% is provided in a welding zone (74) between the first and the second joining partner (2, 8).
    Type: Application
    Filed: May 13, 2019
    Publication date: June 17, 2021
    Applicant: Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
    Inventors: Dominik FENTEN, Michael SCHULZE, Julian SCHMITT, Ralph KALTHOFF
  • Publication number: 20180269757
    Abstract: A method and an apparatus for providing a toothed motor part of an electric motor with a winding using a coil wire with a round wire cross-section, wherein the coil wire is converted into a coil wire with a wire cross-section different from the round wire cross-section in a forming process, and the formed coil wire is wound around the teeth of the motor part to produce a rotating field winding.
    Type: Application
    Filed: May 23, 2018
    Publication date: September 20, 2018
    Applicant: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wuerzburg
    Inventors: Daniel FIEDERLING, Ralph KALTHOFF, Wolfgang STRAUSS