Patents by Inventor Mark E. Tohlen

Mark E. Tohlen 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).

  • Composite core and method of making same
    Patent number: 9120255
    Abstract: A method of wrapping a plurality of mandrels with a composite material can include rotating each mandrel at a rotational speed; translating each mandrel at a translation speed; positioning each mandrel back to back such that an aft face of a preceding mandrel is approximate to a forward face of a trailing mandrel; and sequentially wrapping each mandrel with the composite material in a helical orientation.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 1, 2015
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Paul K. Oldroyd, James D. Hethcock, Jr., Mark E. Tohlen, Phillip A. Kendrick
  • COMPOSITE CORE AND METHOD OF MAKING SAME
    Publication number: 20140265043
    Abstract: A method of wrapping a plurality of mandrels with a composite material can include rotating each mandrel at a rotational speed; translating each mandrel at a translation speed; positioning each mandrel back to back such that an aft face of a preceding mandrel is approximate to a forward face of a trailing mandrel; and sequentially wrapping each mandrel with the composite material in a helical orientation.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Paul K. Oldroyd, James D. Hethcock, Jr., Mark E. Tohlen, Phillip A. Kendrick