Patents by Inventor Rainer Franz

Rainer Franz 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).

  • Apparatus for the controlled feeding of volatile fuel components to the intake of an internal combustion engine
    Patent number: 5220897
    Abstract: A line (3) provided between the head space (11) of the fuel tank (10) and the induction tube (1) of the engine contains an absorption element (9) and can be shut off by a signal-actuated servo valve (8) connected to the outlet from the absorption element. The line (3) is provided with a first sensor (4) preceding the absorption element (9) and detecting gas flows. A vacuum actuator (12) following the servo valve (8) is provided with a second sensor (13) which gives a signal when actuated. The first sensor (4) and the second sensor (13) are connected for carrying signals to a diagnosis block (14) which compares them with the signal (17) actuating the servo valve (8) and uses them for fault diagnosis.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: June 22, 1993
    Assignee: Firma Carl Freudenberg
    Inventors: Harald Buchalla, Stefan Burger, Rainer Franz, Joachim Heinemann, Reinhard Tinz
  • Two-chamber engine mount having variable disc stops and variable choke canal means
    Patent number: 4836515
    Abstract: A two-chamber engine mount with hydraulic damping has a partition arranged between a working space and an equalization space. The partition is formed in a first subarea by a disc movable between stops. The play of the disc between the stops can be varied by a motor. In a second subarea, the partition is penetrated by a first choke canal. A second choke canal can be added to the first choke canal in series or parallel therewith by a motor.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: June 6, 1989
    Assignee: Firma Carl Freudenberg
    Inventors: Rainer Franz, Werner Idigkeit, Hartmut Loschmann, Gerhard Rohner, Klaus Kurr