Patents by Inventor Michael J. McKerrow

Michael J. McKerrow 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).

  • Rotary face seal with anti-crowning features
    Patent number: 8616233
    Abstract: A typical rotary face seal employs a seal ring rotating relative to a sealing surface and also employs means to urge the seal ring towards the sealing surface in order to effect a seal. The seal ring may itself comprise a seal face bonded to a backing ring. In certain applications, the seal face may deform significantly as a result of the temperature variations experienced and an undesirable crowning of the seal face may occur. Such crowning may be reduced by employing an improved seal ring with anti-crowning features in which the thickness of an edge of the seal face is different from that in the middle of the seal face, or in which a relief slot is employed in the seal face. The improved seal ring is particularly suited for rotary face seals used in a rotary valve in a rotary gas separation device.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: December 31, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Christopher R. McLean, Michel P. LeBlanc, Michael J. McKerrow, Bowie G. Keefer, Xiang Lu Kong, Alan O. Lebeck
  • ROTARY FACE SEAL WITH ANTI-CROWNING FEATURES
    Publication number: 20100001220
    Abstract: A typical rotary face seal employs a seal ring rotating relative to a sealing surface and also employs means to urge the seal ring towards the sealing surface in order to effect a seal. The seal ring may itself comprise a seal face bonded to a backing ring. In certain applications, the seal face may deform significantly as a result of the temperature variations experienced and an undesirable crowning of the seal face may occur. Such crowning may be reduced by employing an improved seal ring with anti-crowning features in which the thickness of an edge of the seal face is different from that in the middle of the seal face, or in which a relief slot is employed in the seal face. The improved seal ring is particularly suited for rotary face seals used in a rotary valve in a rotary gas separation device.
    Type: Application
    Filed: July 1, 2009
    Publication date: January 7, 2010
    Inventors: Christopher R. McLean, Michel P. LeBlanc, Michael J. McKerrow, Bowie G. Keefer, Xiang Lu Kong, Alan O. Lebeck