Patents by Inventor Ralf Kuebler

Ralf Kuebler 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).

  • Injection valve, method for its production, and apparatus for performing the method
    Patent number: 8595933
    Abstract: The invention relates to a method for producing an injection valve for liquids, preferably an injection valve for injecting fuel into a combustion chamber of an internal combustion engine. The injection valve has a valve body, with a valve seat which is formed therein, and a valve needle which interacts with the valve seat in order to open and close at least one injection opening. The injection valve is produced by means of the following method steps: producing the valve body from steel, hardening the valve body, annealing a partial region of the valve body at an annealing temperature. The device for carrying out the method according to the invention has an inductive annealing generator which generates a suitable alternating current for operating a coil, in the magnetic field of which coil the valve body can be heated for annealing.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: December 3, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Bernhard Zeiss, Wilhelm Christ, Ralf Kuebler, Alfred Hoch, Matthias Herrmann, Lars Ulrich
  • INJECTION VALVE, METHOD FOR ITS PRODUCTION, AND APPARATUS FOR PERFORMING THE METHOD
    Publication number: 20100180442
    Abstract: The invention relates to a method for producing an injection valve for liquids, preferably an injection valve for injecting fuel into a combustion chamber of an internal combustion engine. The injection valve has a valve body, with a valve seat which is formed therein, and a valve needle which interacts with the valve seat in order to open and close at least one injection opening. The injection valve is produced by means of the following method steps: producing the valve body from steel, hardening the valve body, annealing a partial region of the valve body at an annealing temperature. The device for carrying out the method according to the invention has an inductive annealing generator which generates a suitable alternating current for operating a coil, in the magnetic field of which coil the valve body can be heated for annealing.
    Type: Application
    Filed: June 17, 2008
    Publication date: July 22, 2010
    Inventors: Bernhard Zeiss, Wilhelm Christ, Ralf Kuebler, Alfred Hoch, Matthias Herrmann, Lars Ulrich