Patents by Inventor Karl-Heinz Friebe

Karl-Heinz Friebe 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: 4642030
    Abstract: An arrangement for feeding a fuel from a supply tank to an internal combustion engine, the arrangement comprises a motor; a multistage feed pump unit driven by the motor and including a flow pump having a rotor and a gerotor pump having an inner runner arranged so that the rotor and the inner runner have aligning axes of rotation and the flow pump is arranged upstream of the rotor pump as considered in the flow direction of a fuel, the rotor of the flow pump and the inner runner of the gerotor pump being located near one another as considered in an axial direction, the gerotor pump also having an outer runner which surrounds a feed chamber, and the rotor of the flow pump having a wall which axially limits the feed chamber surrounded by the outer runner of the gerotor pump.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: February 10, 1987
    Assignee: Robert Bosch GmbH
    Inventors: Karl-Heinz Friebe, Karl-Otto Heinz, Werner Scholten
  • Patent number: 4629399
    Abstract: An aggregate for delivering fuel from a fuel supply tank to an internal combustion engine of a motor vehicle comprises an electric drive motor, on the output shaft of which an inner rotor, having teeth on the peripheral surface, is positioned, and a ring-shaped outer rotor surrounding the inner rotor and having inner teeth meshing with the teeth of the inner rotor to form a gear pump. Fuel-conveying vanes are provided on at least one rotor to form a regenerative-type pump. The regenerative-type pump is connected in series to the gear pump as seen in the direction of the fuel supply.
    Type: Grant
    Filed: January 17, 1985
    Date of Patent: December 16, 1986
    Assignee: Robert Bosch GmbH
    Inventor: Karl-Heinz Friebe