Patents by Inventor James M. O'Kelly

James M. O'Kelly 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).

  • Continuous atomspheric pressure CVD coating of fibers
    Patent number: 5547512
    Abstract: Barrier coatings are deposited onto fibrous materials at atmospheric pressure by a continuous CVD process. A relatively short furnace tube with an unrestricted outlet is used. Thus, the supply and takeup reels do not need to be contiguous with the coating part of the apparatus. This allows the periodic removal of fuzz and soot without the interruption of the coating process.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: August 20, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas Gabor, James M. O'Kelly
  • Self-cleaning chemical vapor deposition apparatus and method
    Patent number: 5405654
    Abstract: A self-cleaning chemical vapor deposition (CVD) apparatus and method allow CVD reactors to operate long periods of time without manual removal of extraneous materials such as soot and fuzz. The apparatus is made self-cleaning by superposing a scraping member having a surface, such as a glass rod, over an inner surface of a reactor, and effecting relative movement between the inner surface and scraping member surface. Preferably the reactor is tilted at an angle to horizontal to enhance removal of extraneous material.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: April 11, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas Gabor, James M. O'Kelly, Joseph H. Eaton
  • Continuous atmospheric pressure CVD coating of fibers
    Patent number: 5364660
    Abstract: Barrier coatings are deposited onto fibrous materials at atmospheric pressure by a continuous CVD process. A relatively short furnace tube with an unrestricted outlet is used. Thus, the supply and takeup reels do not need to be contiguous with the coating part of the apparatus. This allows the periodic removal of fuzz and soot without the interruption of the coating process.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: November 15, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas Gabor, James M. O'Kelly
  • Continuous method of covering inorganic fibrous material with particulates
    Patent number: 5322711
    Abstract: To inhibit agglomeration of fibrous material during composite preparation and to increase transverse strength, particulates such as whiskers have been attached to the fibrous material. Whiskers can be economically grown on the fibrous material while it is transported lengthwise through a heated gaseous mixture under APCVD conditions and the presence of an agent for catalyzing the formation of whiskers. The fibrous material preferably is a roving or tow of a ceramic or carbon.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: June 21, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Thomas Gabor, James M. O'Kelly, Chris J. Goodbrake, Joseph H. Eaton