Patents Assigned to Helixsphere Technologies, Inc.
  • Helical drive human powered boat
    Patent number: 6241565
    Abstract: A boat having a helical drive mechanism. The helical drive mechanism includes a slider engaged with a twisted screw or a cylinder having a helical slot or groove. The helical drive mechanism is connected to a force input shaft which is arranged within the boat so that it can be driven by the user's feet or hands. The user drives the force input shaft in a rectilinear motion to force the twisted screw or cylinder of the helical drive mechanism to rotate. This force is ultimately transferred to a propeller to move the boat.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: June 5, 2001
    Assignee: Helixsphere Technologies, Inc.
    Inventor: Mighel Doroftel