Patents by Inventor Uwe Bruetsch

Uwe Bruetsch 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).

  • Actuating unit for a piezo-electrically controlled fuel injection valve
    Patent number: 7339308
    Abstract: An actuator unit which is suitable for actuating a fuel injection valve of an injection system for internal combustion engines includes a piezoelectric actuator and a hollow body embodied as a spring. The service life of the actuator unit can be improved by designing the hollow body to eliminate or minimize bending stresses on the piezoelectric actuator.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: March 4, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Friedrich Boecking, Dieter Kienzler, Dietmar Uhlmann, Uwe Bruetsch
  • Actuating unit for a piezo-electrically controlled fuel injection valve
    Publication number: 20060284740
    Abstract: An actuator unit which is suitable for actuating a fuel injection valve of an injection system for internal combustion engines includes a piezoelectric actuator and a hollow body embodied as a spring. The service life of the actuator unit can be improved by designing the hollow body to eliminate or minimize bending stresses on the piezoelectric actuator.
    Type: Application
    Filed: March 19, 2004
    Publication date: December 21, 2006
    Inventors: Friedrich Boecking, Dieter Kienzler, Dietmar Uhlmann, Uwe Bruetsch
  • Spring bushing and method for producing a spring bushing
    Publication number: 20040026839
    Abstract: A spring bushing, in particular for prestressing a piezoelectric actuator in a valve for controlling fluids, is disclosed, which is a one-piece deep-drawn part, which is hollow and at least approximately cylindrical. The one-piece body is provided with a number of openings distributed over the circumference and length of the body.
    Type: Application
    Filed: August 6, 2003
    Publication date: February 12, 2004
    Inventors: Dietmar Schmieder, Uwe Bruetsch
  • Spring bushing and method for producing a spring bushing
    Publication number: 20030034594
    Abstract: A spring bushing, in particular for prestressing a piezoelectric actuator in a valve for controlling fluids, is disclosed, which is a one-piece deep-drawn part, which is hollow and at least approximately cylindrical. The one-piece body is provided with a number of openings distributed over the circumference and length of the body.
    Type: Application
    Filed: August 16, 2002
    Publication date: February 20, 2003
    Applicant: Robert Bosch GmbH
    Inventors: Dietmar Schmieder, Uwe Bruetsch