Patents by Inventor Philip E. Harcourt

Philip E. Harcourt 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).

  • Wing sail drive system
    Patent number: 4506619
    Abstract: A hydraulic drive system for a wing sail on a vessel, comprising a rotatable frame at the base of the mast and hydraulic cylinders connected between the frame and the ship's structure to cause rotation of the frame in either direction through a limited angle, and a brake is provided on the frame for transmitting rotation of the frame to the mast when the frame is rotating in a direction that it is desired for the mast to rotate, and a brake is provided for preventing rotation of the mast when the frame rotates in the opposite direction, whereby the mast may be rotated through a desired angle by oscillatory movement of the rotatable frame.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: March 26, 1985
    Assignee: Lloyd Bergeson
    Inventors: Alexander P. Bates, Philip E. Harcourt