Patents by Inventor Richard N. Lehman

Richard N. Lehman 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).

  • Premise cable with fiberglass reinforcement
    Publication number: 20020191923
    Abstract: A premise cable having a plurality of inorganic fibers for protecting and suspending a plurality of optical fibers within a polymer jacket. The inorganic fibers, preferably glass fibers, do not generate smoke or fire and thus offer an improvement over traditional polyaramid fibers used as reinforcement materials in premise cables. A sizing composition is applied to the inorganic fibers to prevent ribbonization of the inorganic fibers, thereby preventing attenuation of the optical fibers caused by such a ribbonization and also allowing a uniform distribution of glass fibers around the optical fibers to further protect the optical fibers.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 19, 2002
    Inventors: James R. Priest, Richard N. Lehman
  • Methods for resin impregnated pultrusion
    Patent number: 6048427
    Abstract: A method and apparatus for resin injected pultrusion is provided. The method comprises injecting a resin material into a reinforcement pack at a sufficiently high pressure such that the pressure in the injection area or weir of the injection die is substantially equal to the compression pressure applied by the exit portion of the injection die. An apparatus for achieving the method is also provided.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: April 11, 2000
    Assignee: Owens Corning Fiberglas Technology, Inc.
    Inventors: James V. Gauchel, Richard N. Lehman
  • Apparatus for resin ipregnated pultrusion
    Patent number: 5747075
    Abstract: A method and apparatus for resin injected pultrusion is provided. The method comprises injecting a resin material into a reinforcement pack at a sufficiently high pressure such that the pressure in the injection area or weir of the injection die is substantially equal to the compression pressure applied by the exit portion of the injection die. An apparatus for achieving the method is also provided.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 5, 1998
    Assignee: Owens-Corning Fiberglas Technology Inc.
    Inventors: James V. Gauchel, Richard N. Lehman