Patents by Inventor Ian Denison

Ian Denison 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).

  • Sailboard apparatus
    Patent number: 4958581
    Abstract: A sailboard has a force responsive device connected to its mast for providing first and second output signals corresponding to the shearing forces acting between the mast and the sailboard in the longitudinal direction of the sailboard and in the transverse direction of the sailboard, with an indicator responsive to the first and second output signals for providing visual indications representing the shearing forces to enable improved operation of the sailboard.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: September 25, 1990
    Inventor: Ian Denison