Patents by Inventor Francis X. Hurley

Francis X. Hurley 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).

  • Variable cycle engine passive mechanism
    Patent number: 4978286
    Abstract: A mechanism for varying the cycle of a power plant comprising a turbine ene having a housing connected to the rotating spool of the turbine engine with a plurality of propeller blades slideably attached to the housing such that at maximum rotational speed of the turbine engine the blades are extended beyond the cowling of the engine providing external airflow. A nonlinear spring is used for causing the propeller blades to stow within the confines of the cowling of the engine at minimum rotational speed of the engine thus providing no external airflow.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: December 18, 1990
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Francis X. Hurley