Patents by Inventor David J. Leskow

David J. Leskow 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).

  • Main rotor shaft mounted hydraulic pressure system
    Patent number: 6908286
    Abstract: A rotor system includes a hydraulic pressure system located within a rotor shaft along an axis or rotation. The hydraulic pressure system is within the rotating field such that fluid pressure is generated and supplied from within the rotational field without the need to cross a rotational interface. Differential rotation between the rotor shaft and a standpipe rotates a hydraulic pump body relative a hydraulic pump shaft. The hydraulic pressure system is contained within a support structure so as to be readily mounted and removed from the rotor hub for replacement or maintenance. A gear system is mounted to the support structure between the standpipe and the hydraulic pump shaft to step-up or step-down the relative rotation between the rotor shaft and the standpipe.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: June 21, 2005
    Assignee: Sikorsky Aircraft Corporation
    Inventors: David J. Leskow, William J. Eadie