Having Feeler Means Patents (Class 114/276)
  • Assisted foil for watercraft
    Patent number: 10279873
    Abstract: A hydrofoil watercraft has propulsion system integrated with the hull that engages the water when the watercraft is in a displacement mode. The propulsion system is disengaged from the water when the hull is in foiling mode. The propulsion system may automatically deactivate when the watercraft transitions from the displacement mode to the foiling mode.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: May 7, 2019
    Inventor: Tony Logosz
  • Efficient wave energy conversion using cycloidal turbines
    Patent number: 9115687
    Abstract: A single-blade or double-blade cycloidal turbine can operate as a wave generator or a wave energy converter. Efficient operation techniques can adjust a pitch angle, a radial size, and/or a depth of the cycloidal turbine according to the height and wavelength of an incoming wave. The rotation of the cycloidal turbine can be controlled so that a rotational period of the cycloidal turbine matches the period of the wave and so that a target difference is maintained between a rotation angle of the cycloidal turbine and a phase angle of the wave.
    Type: Grant
    Filed: February 25, 2012
    Date of Patent: August 25, 2015
    Assignee: Atargis Energy Corporation
    Inventor: Stefan G. Siegel
  • Foil suspended watercraft
    Patent number: 5168824
    Abstract: A hydrofoil suspension system which maintains a watercraft in a desired attitude relative the water's surface. Pitching and rolling forces are automatically controlled while the system is resistant to destabilization by localized surface irregularities.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: December 8, 1992
    Inventor: Greg S. Ketterman
  • Automatic takeoff controller for hydrofoil craft
    Patent number: 4182256
    Abstract: An automatic takeoff control system for hydrofoil craft characterized in that the control surfaces of the craft are caused to automatically assume predetermined positions during takeoff, obviating the necessity for special levers, lever settings and special operator procedures which were involved in making a transition from hull-borne to foil-borne operation in accordance with prior art techniques.
    Type: Grant
    Filed: August 15, 1973
    Date of Patent: January 8, 1980
    Assignee: The Boeing Company
    Inventors: John H. Scott, Arlyn O. Harang