Patents by Inventor Ari Hietanen, deceased

Ari Hietanen, deceased 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).

  • Vessel mobile on air cushion or the like
    Patent number: 4046215
    Abstract: A propeller driven vehicle, such as an air cushion hovercraft, comprising a hull, a teardrop shaped cabin mounted on the hull and a propeller arranged in front of the cabin. A gutter shaped obstructing plate is pivotally mounted to each side wall of the cabin and is movable between a horizontal and vertical position. When the obstructing plate is moved from its horizontal position to obstruct the air flow from the propeller around the side wall of the cabin, a pressure differential is created on the cabin which is effective in steering the vehicle.
    Type: Grant
    Filed: September 30, 1975
    Date of Patent: September 6, 1977
    Inventors: Esko Hietanen, Ari Hietanen, deceased, by Margo-Ritta Hietanen, heiress