Patents by Inventor Gregor Pfister

Gregor Pfister 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).

  • Work apparatus
    Patent number: 12521864
    Abstract: A work apparatus has a tool, which can be driven in a rotating manner around a rotational axis. The work apparatus has a protective hood extending over at least a part of the periphery of the tool. The protective hood is attached to a housing part of the work apparatus. At least two rotation locks for the protective hood are arranged in different angular positions around the rotational axis. Each rotation lock is formed by virtue of the fact that one of the components of the protective hood and the housing part has a protruding section cooperating with a section of the other component of the protective hood and the housing part and securing the protective hood on the housing part in a positive-locking manner against rotation around the rotational axis, so that the protective hood is prevented from moving with respect to the housing part around the rotational axis.
    Type: Grant
    Filed: March 12, 2024
    Date of Patent: January 13, 2026
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Alexander Haertel, Fabian Willems, Gregor Pfister, Benjamin Barth
  • WORK APPARATUS
    Publication number: 20240308049
    Abstract: A work apparatus has a tool, which can be driven in a rotating manner around a rotational axis. The work apparatus has a protective hood extending over at least a part of the periphery of the tool. The protective hood is attached to a housing part of the work apparatus. At least two rotation locks for the protective hood are arranged in different angular positions around the rotational axis. Each rotation lock is formed by virtue of the fact that one of the components of the protective hood and the housing part has a protruding section cooperating with a section of the other component of the protective hood and the housing part and securing the protective hood on the housing part in a positive-locking manner against rotation around the rotational axis, so that the protective hood is prevented from moving with respect to the housing part around the rotational axis.
    Type: Application
    Filed: March 12, 2024
    Publication date: September 19, 2024
    Inventors: Alexander Haertel, Fabian Willems, Gregor Pfister, Benjamin Barth