Patents by Inventor Helmut Kohlhaas

Helmut Kohlhaas 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).

  • Fuel Supply Device for a Motor Vehicle
    Publication number: 20080302339
    Abstract: The invention relates to a fuel supply device (2) for a motor vehicle, which comprises a fuel tank (1). An intake connection (24) of a fuel pump (7) is located in a ventilation device (4). The fuel pump (7) simultaneously takes in fuel from the fuel tank (1) and from the ventilation device (4). For this purpose, the fuel pump (7) and a bubble removal container (8) of the ventilation device (4) are configured as a single structural unit.
    Type: Application
    Filed: April 25, 2005
    Publication date: December 11, 2008
    Inventors: Christian Krogull, Knut Meyer, Frank Reiter, Stefan Fuehling, Helmut Kohlhaas
  • Delivery unit arranged in a surge chamber of a fuel tank of a motor vehicle
    Patent number: 6478014
    Abstract: A delivery unit arranged in a surge chamber of a fuel tank includes an ejector for filling the surge tank. One half of the ejector is defined by the surge chamber and the other half is defined by a pump holder holding a fuel pump in the surge chamber. The pump holder and the surge chamber are configured as components which are easy to manufacture, thereby allowing the delivery unit to be cost-effectively configured.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: November 12, 2002
    Assignee: Mannesmann VDO AG
    Inventor: Helmut Kohlhaas
  • Delivery unit
    Patent number: 6454547
    Abstract: A delivery unit which is provided for feeding motor-vehicle fuel has an electric motor (1) with vanes (1) arranged on the lateral surface of a rotor (4). During rotation of the rotor (4), the vanes (11) feed the fuel in a pump channel (19) between the rotor (4) and a stator (3). The delivery unit is thus constructed in a particularly compact manner and is cost-effective to produce.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: September 24, 2002
    Assignee: Mannesmann VDO AG
    Inventors: Helmut Kohlhaas, Dieter Wilhelm
  • Pump assembly
    Patent number: 6423221
    Abstract: A pump assembly is comprised of a pump member having a pump wall and a filter element located within a filter housing that is prestressed against the pump wall. In an exemplary embodiment, a housing of the pump assembly is manufactured in a single piece with a clamping element. The clamping element includes a flanged border for gripping behind an edge of the filter housing.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: July 23, 2002
    Assignee: Mannesmann VDO AG
    Inventors: Helmut Kohlhaas, Dieter Wilhelm
  • Internal gear fuel pump
    Patent number: 5156540
    Abstract: Feed unit, in particular for the feeding of fuel, having an electric drive motor and a pump unit coupled to it, which comprises a base plate, an intermediate plate having a recess for rotating pump parts and a cover, at least the base plate and the cover consisting of a ceramic material and the end sides of the base plate and of the cover which face the intermediate plate having ground surfaces.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: October 20, 1992
    Assignee: VDO Adolf Schindling AG
    Inventors: Norbert Fernau, Helmut Kohlhaas