Patents by Inventor Norman James Longworth

Norman James Longworth 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).

  • Clew board with traveller for self tacking head sails
    Patent number: 5771832
    Abstract: A sail fastening apparatus (18) for a yacht. The apparatus (18) comprises a first track (21) extending along a sail clew (12) in a direction generally normal to a preferred vertical sheeting angle of the sail, a first carriage (22) slidably mounted for movement along the first track (21), and a sheet (16) extending between the first carriage and a sheeting point (27) on the yacht aft of the clew. The first carriage tends automatically to adopt a stable equilibrium position on the track such that the preferred vertical sheeting angle (B) for the sail is maintained.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: June 30, 1998
    Assignee: Ausman Engineering and Associates Pty. Ltd.
    Inventors: Ian Cameron MacDiarmid, Norman James Longworth