Patents by Inventor Daniel A. Ortega

Daniel A. Ortega 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).

  • Method and apparatus for temporarily sealing off pipelines
    Patent number: 5285806
    Abstract: A method and apparatus for sealing off flow in a pipeline for the purpose of repairing the line includes a combination of a restraining rod and inflation bag which can be installed on either or both sides of the intended site of repair; and a flexible sleeve is provided for use in association with the entry ports and any associated valve members for insertion of the restraining rod and bag to prevent the escape of gas from the line during the insertion procedures. Once the line is repaired, the restraining rod and inflation bag can be removed and the entry ports completely sealed off.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: February 15, 1994
    Assignee: Public Service Company of Colorado
    Inventor: Daniel A. Ortega