Patents by Inventor David C. Hackney

David C. Hackney 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: 6178907
    Abstract: A steering system is provided for watercraft having a hull and first and second thrust producing devices capable of providing forward or reverse thrust relative to the hull, wherein the first and second thrust producing devices provide thrust along first and second thrust axes, respectively, comprising a first rudder assembly positioned forward of the first thrust producing device, wherein the first rudder assembly is pivotally connected beneath the hull; a second rudder assembly positioned forward of the second thrust producing device, wherein the second rudder assembly is pivotally connected beneath the hull; first actuation device operatively connected to the first rudder assembly for actuating a change in the rotational position of the first rudder assembly; second actuation device operatively connected to the second rudder assembly for actuating a change in the rotational position of the second rudder assembly; and a control device operatively connected to the first and second actuation devices for contr
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: January 30, 2001
    Inventors: David C. Shirah, David C. Hackney