Patents by Inventor Daniel J. S. Broadhurst

Daniel J. S. Broadhurst 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).

  • Recreational semi-displacement hull watercraft
    Patent number: 4660490
    Abstract: A watercraft comprising an efficient, directionally stable and maneuverable hull construction useful for recreation and water sports. In a preferred embodiment the hull has an outwardly projecting flange longitudinally positioned along the periphery of the hull substantially about the waterline, whereby the flange increases the directional stability and maneuverability of the hull and keeps the wetted surface area of the hull to a minimum.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: April 28, 1987
    Assignee: Olympia Sports Products, Inc.
    Inventor: Daniel J. S. Broadhurst