Patents by Inventor Gilbert M. Martin

Gilbert M. Martin 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).

  • Swivel air lock for airtight connection between submergibles
    Patent number: 3987742
    Abstract: An air lock in accordance with the invention is composed of two portions -- stationary hemispherical bell 6 fastened on a submarine rescue device 5 and a swivel skirt 7 in the form of a portion of a swivel joint, nested in the bell with a slight amount of play, bearing a peripheral sealing joint 28 which is applied against the hull 2 of a submarine around an opening 3. Two sealing joints 19 and 15 are placed between the bell and the skirt and the intermediate space 20 is filled with oil maintained at a constant pressure which is slightly different from the hydrostatic pressure.
    Type: Grant
    Filed: February 4, 1975
    Date of Patent: October 26, 1976
    Assignee: Etat Francais represente par le Deleque Ministeriel pour l'Armement
    Inventors: Gerald M. Boisrayon, Gilbert M. Martin, Jean C. Mollard
  • Buoy releasable from a submarine
    Patent number: 3933109
    Abstract: A distress buoy releasable from a submarine comprising two hemispherical portions sealably joined to form a hollow spherical body mounting a radio transmitter with deployable antenna, a radar responder with antenna, a beacon light, a tape recorder containing information recorded over a time period before release, and electrical power cells. A ring of float members is secured to and surrounds the spherical body.
    Type: Grant
    Filed: November 29, 1973
    Date of Patent: January 20, 1976
    Assignee: Etat Francais
    Inventors: Gerard M. Boisrayon, Gilbert M. Martin, Gabriel M. Delfosse