Patents by Inventor Mark Blezard

Mark Blezard 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).

  • Flexible hydraulic expansion mandrel
    Patent number: 5392626
    Abstract: A flexible mandrel for expanding a tube in a tubesheet comprises a length of flexible wire which is placed within a tube. A hydraulic seal is located at each end of the length of flexible wire for sealing a section of the tube and is connected to the flexible wire by a connector. A fluid inlet is provided at the rear end of the mandrel for providing fluid to the mandrel between the sealed section of the tube.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: February 28, 1995
    Assignee: The Babcock & Wilcox Company
    Inventors: Mark Blezard, Keirouz Diab