Patents by Inventor Scott Roberts Kalkman

Scott Roberts Kalkman 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: 6748894
    Abstract: The present invention generally includes a submersible marine vehicle for recreational use in which a propeller and motor assembly is disposed within the vehicle's hull and a battery is disposed beneath the hull. The front end of the hull contains a plurality of inlets and the back end contains a plurality of outlets. The propeller and motor assembly is disposed within the hull such the propeller is adjacent to the hull's front end and the motor is adjacent to the hull's back end. Each propeller blade has its leading edge aft of its trailing edge. The hull includes a pair of fins which are integral with the hull, each fin extending horizontally and away from the hull. Each fin contains a hand hold, extending downwardly and away from the underside surface of the fin. A pair of curved tracking fins are attached to opposite sides of the bottom side of the hull, each curved tracking fin extending outwardly and downwardly away from the hull.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: June 15, 2004
    Inventors: Adam Peter Dunn, Scott Roberts Kalkman, Gary Starr, James R. Jeremias
  • Patent number: D453726
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: February 19, 2002
    Assignee: ZAP
    Inventors: Adam Peter Dunn, Scott Roberts Kalkman, Gary Starr, James Richard Jeremias