Patents by Inventor Francis E. Tiller

Francis E. Tiller 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).

  • Helicopter cargo hook apparatus
    Patent number: 4138078
    Abstract: An apparatus for attaching a load bearing line to a helicopter is disclosed that utilizes a curvilinear track mounted on the underside of the helicopter with a carriage having a cargo hook freely movable thereon. The curvilinear track has a radius of curvature that extends from the center of gravity of the helicopter to maintain forces imposed on the helicopter from a swinging load directed through a point near the center of gravity of the helicopter.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: February 6, 1979
    Assignee: Textron Inc.
    Inventors: Michael L. Hester, Francis E. Tiller