Patents by Inventor Anthony I. Rees

Anthony I. Rees 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).

  • Attitude sensor
    Patent number: 5452519
    Abstract: An attitude sensor comprises a spherical ball suspended in a fluid contained in a housing. The ball is maintained neutrally buoyant with respect to the fluid and out of direct contact with the housing. A means is provided for detecting the orientation of the ball. The sensor is particularly useful as a compass, in which case one or more magnets may be provided within the ball or a passive magnetic element is provided which is influenced by the earth's magnetic field.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: September 26, 1995
    Assignee: 3D Instruments Limited
    Inventors: Timothy R. Crocker, Anthony I. Rees