Patents by Inventor David E. Hahn

David E. Hahn 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).

  • Publication number: 20120037557
    Abstract: The filter may include a first end cap, a second end cap, and a filter media. The filter media may be located between the first end cap and the second end cap. The filter media and the end caps may be located in a shell. An insert including a projection may be connected to the shell. The projection may engage a valve in the filter head when the filter is mounted onto a filter head. The projection may include a curved portion. The curved portion may engage a ball in the valve. The filter media may be a coalescing media which may assist in separating water from a fuel and water mixture.
    Type: Application
    Filed: August 11, 2011
    Publication date: February 16, 2012
    Inventors: Welby S. Atteberry, David E. Hahn, John D. Gaither, John W. Stockhowe, JR.
  • Patent number: 6926827
    Abstract: A fuel dispenser filter for filtering fuel is adapted to be connected to a support in a fuel distribution system. The filter comprises a housing including an adaptor constructed and arranged to be secured to the support and a bowl operatively connected to the adaptor. A stud/spacer is secured in the adaptor. The stud/spacer defines a centrally disposed outlet flow passage and outwardly disposed inlet flow passages. A sleeve member is movably supported in the adaptor between the stud/spacer and the adaptor. The sleeve member is constructed and arranged to open and close the fuel flow through the inlet flow passages. A filter assembly including filter media is provided in the bowl for filtering the fuel passing through the filter. When the bowl is firmly engaged with the adaptor, the sleeve member is moved to open position to permit the flow of fuel through the filter and when the bowl is removed from the adaptor, the sleeve member is moved to a closed position to stop the flow of fuel.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: August 9, 2005
    Assignee: Champion Laboratories, Inc.
    Inventors: Michael J. Gruca, David E. Hahn, W. Scott Atteberry
  • Publication number: 20040217045
    Abstract: A fuel dispenser filter for filtering fuel is adapted to be connected to a support in a fuel distribution system. The filter comprises a housing including an adaptor constructed and arranged to be secured to the support and a bowl operatively connected to the adaptor. A stud/spacer is secured in the adaptor. The stud/spacer defines a centrally disposed outlet flow passage and outwardly disposed inlet flow passages. A sleeve member is movably supported in the adaptor between the stud/spacer and the adaptor. The sleeve member is constructed and arranged to open and close the fuel flow through the inlet flow passages. A filter assembly including filter media is provided in the bowl for filtering the fuel passing through the filter. When the bowl is firmly engaged with the adaptor, the sleeve member is moved to open position to permit the flow of fuel through the filter and when the bowl is removed from the adaptor, the sleeve member is moved to a closed position to stop the flow of fuel.
    Type: Application
    Filed: May 2, 2003
    Publication date: November 4, 2004
    Applicant: Champion Laboratories, Inc.
    Inventors: Michael J. Gruca, David E. Hahn, W. Scott Atteberry