Patents Assigned to The United of America as represented by the Secretary of the Army
  • Method and apparatus for optical fiber transmission in a utility conduit containing a hostile fluid
    Patent number: H704
    Abstract: Optical fibers are used in a utility piping system containing oil, water or as by coating the fibers after drawing with an inorganic hermetic coating which is impervious to both moisture and whatever fluid is contained in the system. The hermetic coating permits the fibers to undergo the mechanical stresses encountered during insertion in the piping system without causing degradation of either the mechanical or optical performance of the fibers.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: November 7, 1989
    Assignee: The United of America as represented by the Secretary of the Army
    Inventors: Sam Di Vita, Edmund E. Malecki, Loretta J. Kubricky