Patents by Inventor Sherman F. Martin

Sherman F. Martin 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).

  • Cascade thrust reverser
    Patent number: 4790495
    Abstract: A convergent-divergent jet exhaust nozzle has an aft end with an exit area thereat and a throat area spaced from the exit area and forward thereof. The ratio of the exit to throat diameter is from 1.00 to 1.05. Each of two symmetrical blocker doors has an axis coincident with the axis of the nozzle. Each of the blocker doors has opposite forward and rear edges and a surface extending between the edges. Each of the blocker doors is pivotally mounted to pivot about a pivot axis transverse to the axis of the nozzle and disposed downstream of the engine in the nozzle. The pivot axes are in a plane intersected by the axis of the nozzle.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: December 13, 1988
    Assignee: Grumman Aerospace Corporation
    Inventors: William K. Greathouse, Sherman F. Martin