Patents by Inventor Donn J. Hethcock

Donn J. Hethcock 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).

  • Method and apparatus for Z-direction reinforcement of composite laminates
    Patent number: 8214981
    Abstract: A method and apparatus for Z-direction reinforcement of composite laminates is disclosed. Discrete fibers are pulled through a fiber composite preform in the Z-direction by barbed needles.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: July 10, 2012
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Donn J. Hethcock, Scott J. Drennan, Ken D. Cominsky