Patents by Inventor Charles K. Atwell

Charles K. Atwell 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).

  • Fan rotor with construction and safety performance optimization
    Patent number: 6457941
    Abstract: A one-piece fan rotor optimized for construction and safety performance criteria is provided. The rotor has a hub with a radial cross-section defined by an I-beam. A plurality of unequally-spaced rotor blades are disposed circumferentially around and extend radially outward from the hub. Each rotor blade has a root portion coupled to the hub with the root portion defined by a concave fillet circumventing the rotor blade. For rotational balance, at least one of the forward side and backside of the hub incorporates an axially extending pad. Methods are provided for controlling stress on the rotor and for balancing the rotor.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: October 1, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John C. Larzelere, Dale W. Sisson, Jr., Craig S. LaMoy, Charles K. Atwell, Thomas W. Van Doren, Marh A. Huebner, Nicholas L. Tzortzinis
  • FAN ROTOR WITH CONSTRUCTION AND SAFETY PERFORMANCE OPTIMIZATION
    Publication number: 20020131865
    Abstract: A one-piece fan rotor optimized for construction and safety performance criteria is provided. The rotor has a hub with a radial cross-section defined by an I-beam. A plurality of unequally-spaced rotor blades are disposed circumferentially around and extend radially outward from the hub. Each rotor blade has a root portion coupled to the hub with the root portion defined by a concave fillet circumventing the rotor blade. For rotational balance, at least one of the forward side and backside of the hub incorporates an axially extending pad. Methods are provided for controlling stress on the rotor and for balancing the rotor.
    Type: Application
    Filed: March 13, 2001
    Publication date: September 19, 2002
    Inventors: John C. Larzelere, Dale W. Sisson, Craig S. LaMoy, Charles K. Atwell, Thomas W. Van Doren, Marh A. Huebner, Nicholas L. Tzortzinis
  • Air supply system particularly suited to remove contaminants created by chemical, biological or radiological conditions
    Patent number: H2221
    Abstract: Disclosed is an air supply system that provides filtered ventilation to a protected zone which is maintained at a positive pressure so as to prevent contaminants from infiltrating therein. The system further discloses a three-stage air filter apparatus that provides all the necessary filtering to remove contaminants from the air that may be created by chemical, biological and radiological conditions.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 5, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Craig S. LaMoy, Michael A. Pompeii, Charles K. Atwell, W. Dale Craig, Bradley A. Repp, Dallas Wayne Culbertson