Patents by Inventor Andreas Hettrich

Andreas Hettrich 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).

  • Piston pump
    Patent number: 8353691
    Abstract: A piston pump for the hydraulic energy supply in a motor vehicle, comprising a piston that is movably arranged in a stepped bore of an accommodating member that is provided with a closure, the piston carries a seat for an elastic sealing element which accommodates the sealing element with axial play, and with radial elastic preload for the purpose of sealing between piston and cylinder. The seat for the sealing element has a structure which generates forces pointing radially towards a piston axis and expanding the sealing element in a radial direction, and that the structure produces an elastic deformation of the sealing element for an increased and dosed sealing contact pressure between piston and cylinder.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: January 15, 2013
    Assignee: Continental Teves AG & Co., oHG
    Inventors: Georg Sonnenschein, Georg Obersteiner, Jurgen Uhlmer, Achim Possmann, Andreas Hettrich
  • Piston Pump
    Publication number: 20080246225
    Abstract: A piston pump for the hydraulic energy supply in a motor vehicle, comprising a piston that is movably arranged in a stepped bore of an accommodating member that is provided with a closure, the piston carries a seat for an elastic sealing element which accommodates the sealing element with axial play, and with radial elastic preload for the purpose of sealing between piston and cylinder. The seat for the sealing element has a structure which generates forces pointing radially towards a piston axis and expanding the sealing element in a radial direction, and that the structure produces an elastic deformation of the sealing element for an increased and dosed sealing contact pressure between piston and cylinder.
    Type: Application
    Filed: September 8, 2006
    Publication date: October 9, 2008
    Applicant: CONTINENTAL TEVES AG & CO. oHG
    Inventors: Georg Sonnenschein, Georg Obersteiner, Jurgen Uhlmer, Achim Possmann, Andreas Hettrich