Patents by Inventor Pierre H. Fort

Pierre H. Fort 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).

  • Patent number: 4291630
    Abstract: An extractor carriage is furnished on each side with an elbow bracket projecting towards its lower portion. To each of these brackets is attached the end of a cable which moves the carriage in its forward direction towards the centrifuging machine. Each cable is protected at its upper portion from sand debris by lateral wings extending from the upper portions of a trough which receives the debris. These cables, as well as a third cable for returning the carriage, are wound around a single motor drum driven by hydraulic motors which are capable of operating at several speeds. The invention may be applied to centrifuging equipment for cast iron pipe.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: September 29, 1981
    Assignee: Pont-a-Mousson S.A.
    Inventor: Pierre H. Fort