Patents by Inventor Paul Woellhaf

Paul Woellhaf 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).

  • ACTUATOR FOR GENERATING A ROTATIONAL POSITIONING MOVEMENT
    Publication number: 20100072725
    Abstract: The present invention relates to an actuator for generating a rotational positioning movement, wherein the actuator comprises an electric motor (1) and a reduction gear (2) which consists of two assemblies (4, 5). The first assembly (4) is formed by a gear of the harmonic, cycloid or wobble, type and the second assembly (5) by a gear of the single-step or multistep planetary or Wolfrom type, whereby both assemblies (4, 5) are so tuned to each other, that the reduction gear (2) is not self-locking.
    Type: Application
    Filed: December 3, 2007
    Publication date: March 25, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Paul Woellhaf, Roland Doerner