Patents by Inventor Bruno GEHLERT

Bruno GEHLERT 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).

  • Differential cylinder for a hydromechanical drive for electrical circuit breakers
    Patent number: 9920777
    Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: March 20, 2018
    Assignee: ABB Schweiz AG
    Inventors: Thomas Brenneis, Matthias Schmidt, Henrik Lohrberg, Frank Fiedler, Bruno Gehlert, Roland Palm
  • DIFFERENTIAL CYLINDER FOR A HYDROMECHANICAL DRIVE FOR ELECTRICAL CIRCUIT BREAKERS
    Publication number: 20140137731
    Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.
    Type: Application
    Filed: February 3, 2014
    Publication date: May 22, 2014
    Applicant: ABB Technology AG
    Inventors: Thomas BRENNEIS, Matthias SCHMIDT, Henrik LOHRBERG, Frank FIEDLER, Bruno GEHLERT, Roland PALM