Patents by Inventor Sathy P. Viswanathan

Sathy P. Viswanathan 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).

  • Pylon mounting system for reducing helicopter vibration
    Patent number: 4362281
    Abstract: A mounting for a helicopter pylon having a plurality of resilient vertical support links (24-27) between the pylon (12) and the helicopter fuselage (13). The links have a composite spring rate for a given pylon weight which establishes a resilient support for the fuselage from the pylon at the thrust required to support said fuselage in normal flight and in which oscillatory vertical force transmitted to fuselage is minimal for acceptable static deflections of the pylon.Physical stops (24e, 24n, 24p) are operable to limit deflection between the pylon (12) and the fuselage (13) at predetermined rotor thrust above and below said normal thrust.Links (24-27) are mounted at the ends of a pair of rigid beams (20, 21 and 22, 23) which are secured at the centers thereof to opposite sides of transmission portion of the pylon (12).A vertical rigid mounting pin (24b) extends downward at the end of each beam.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: December 7, 1982
    Assignee: Textron, Inc.
    Inventors: Wesley L. Cresap, Alan W. Myers, Sathy P. Viswanathan