Patents by Inventor William L. Dunlap

William L. Dunlap 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).

  • Conical nut
    Publication number: 20080166202
    Abstract: A conical nut comprising a body (10) having a cylindrical portion (121), a threaded bore surface (13) and a flange (11) extending normally from the cylindrical portion, a biasing member comprising a disc spring (30), a conical seat (450) having a tapered surface (451), the conical seat coaxially engagable with the cylindrical portion, the biasing member disposed between the flange and the conical seat, and a flared rim (120) engaged with the conical seat (450) to prevent disengagement of the conical seat from the cylindrical portion.
    Type: Application
    Filed: January 8, 2007
    Publication date: July 10, 2008
    Inventors: William L. Dunlap, Daniel W. Bard
  • Hangers for trailer heights adjustment
    Patent number: 6708988
    Abstract: An individual hanger as well as a hanger system is provided for changing the height on a trailer. Each individual hanger includes a hanger spacer which is easily removable and interchangeable with hanger spacers of a different size. The system includes hanger spacers of the same and differing heights so that different combinations of hanger spacers can be used to achieve different trailer heights.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: March 23, 2004
    Assignee: Dexter Axle Company
    Inventors: William L. Dunlap, Terry L. Trindle
  • Hangers for trailer height adjustment
    Publication number: 20030205870
    Abstract: An individual hanger as well as a hanger system is provided for changing the height on a trailer. Each individual hanger includes a hanger spacer which is easily removable and interchangeable with hanger spacers of a different size. The system includes hanger spacers of the same and differing heights so that different combinations of hanger spacers can be used to achieve different trailer heights.
    Type: Application
    Filed: May 1, 2002
    Publication date: November 6, 2003
    Inventors: William L. Dunlap, Terry L. Trindle