Patents by Inventor Peter M. Linfield

Peter M. Linfield 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).

  • Apparatus for spraying an insulating foam on an inside wall of a tank
    Patent number: 3989006
    Abstract: Apparatus for spraying plastic insulating material on the inner surfaces of the inner hull of a tanker for transporting liquefied gas, e.g. LNG, LPG, etc. The apparatus comprises a vertical column adapted to be mounted in a tank, hinged extendible arm rotatable around and up and down on the column, a carriage carried on the free end of the arm, and spraying apparatus on the carriage.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: November 2, 1976
    Assignee: Shell Oil Company
    Inventors: Joseph Estebanez, Peter M. Linfield