Patents by Inventor Josef Rosgen

Josef Rosgen 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).

  • Carburetor for internal-combustion engines
    Patent number: 4283354
    Abstract: The ratio air:fuel with a mixture fed to an internal combustion engine is maintained constant independent of the condition of said internal combustion engine in that the mixture is fed supercritically and the air subcritically into a by-pass line bypassing the main choke.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: August 11, 1981
    Assignee: Pierburg GmbH & Co. KG
    Inventors: Walter Schauer, Josef Rosgen
  • Carburetors for internal combustion engines
    Patent number: 4191149
    Abstract: A carburetor has a float chamber and a device for adjusting the gaseous pressure in the float chamber. The device comprises a pressure source and a probe contacting the exhaust gas and delivering a signal which is a function of the exhaust gas composition. The device has an airflow pipe connecting the source to atmosphere, a throttle for impressing a head loss to the flow and controlled by the probe and a venturi located in the pipe and connected to the float chamber for giving a pressure which may be out of the range between the source pressure and atmospheric pressure.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: March 4, 1980
    Assignee: Societe Industrielle de Brevets et d'Etudes S.I.B.E.
    Inventors: Rathindra Dutta, Josef Rosgen, Gerd Rosemann