Patents by Inventor Brian E. Travis

Brian E. Travis 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).

  • Grid composite for longwall shield recovery in underground coal and trona mines
    Patent number: 5199825
    Abstract: A grid composite for protecting men and longwall mining equipment during longwall shield recovery includes a regular polymer geogrid structure formed by biaxially drawing a continuous sheet of select polypropylene material which is heat bonded to a polyester fabric. The grid composite is secured over caving shields of longwall mining equipment during a longwall mining operation.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: April 6, 1993
    Assignee: The Tensar Corporation
    Inventor: Brian E. Travis