Patents by Inventor Boris K. Kogan

Boris K. Kogan 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).

  • Transfer valve system
    Patent number: 6823669
    Abstract: A hydraulic transfer valve system has a main valve selectively placing one of a primary and secondary hydraulic system in communication with a hydraulic load. A pilot valve provides a toggling action between the primary and secondary systems with respect to pressure changes in such systems.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: November 30, 2004
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Boris K. Kogan, William F. Lange
  • Transfer valve system
    Publication number: 20040194458
    Abstract: A hydraulic transfer valve system has a main valve selectively placing one of a primary and secondary hydraulic system in communication with a hydraulic load. A pilot valve provides a toggling action between the primary and secondary systems with respect to pressure changes in such systems.
    Type: Application
    Filed: April 2, 2003
    Publication date: October 7, 2004
    Inventors: Boris K. Kogan, William F. Lange