Patents by Inventor Wendelin Potz, legal representative

Wendelin Potz, legal representative 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).

  • Patent number: 7051958
    Abstract: A fuel injection valve for internal combustion engines, having a housing in which an outer valve needle and an inner valve needle guided in it are disposed in a bore. The outer valve needle controls an outer row of injection openings, and the inner valve needle controls an inner row of injection openings, to which rows of injection openings fuel is delivered at an injection pressure through a high-pressure conduit embodied in the housing. A control pressure chamber in the housing can be made to communicate with the high-pressure conduit, and by means of its pressure, a closing force is exerted at least indirectly on the inner valve needle. The high-pressure conduit communicates with a control chamber, by whose pressure a closing force is exerted at least indirectly on the outer valve needle, and the control chamber communicates with the control pressure chamber. A control valve is disposed in a housing, and by means of the control valve, the control chamber can be made to communicate with a leak fuel chamber.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: May 30, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Maike Sander-Potz, legal representative, Wendelin Potz, legal representative, Peter Boehland, Thomas Kuegler, Andreas Koeninger, Predrag Nunic, Detlev Potz, deceased
  • Patent number: 7021567
    Abstract: A fuel injection valve for internal combustion engines, having a housing with a bore inside it that contains a longitudinally sliding outer valve needle which in turn contains a longitudinally sliding inner valve needle and the end of each valve needle oriented toward the combustion chamber controls at least one injection opening. The pressure in a control pressure chamber at least indirectly exerts a closing force on the outer valve needle and the pressure in a control pressure chamber at least indirectly exerts a closing force on the inner valve needle. The housing contains a control valve that has a valve chamber and a valve element contained in it, wherein the valve chamber has a connection to the leakage oil chamber a continuously open connection to the control chamber and a connection to the control pressure chamber.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: April 4, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Maike Sander-Potz, legal representative, Wendelin Potz, legal representative, Thomas Kuegler, Andreas Koeninger, Predrag Nunic, Detlev Potz, deceased