Patents by Inventor Rick D. Dunagan

Rick D. Dunagan 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).

  • Patent number: 7497838
    Abstract: A method and apparatus for aerating a fracture sight that employs a membrane or covering that wraps and seals the outside of a breathable, orthopedic cast and typically includes an array of spaced apart protrusions on an inside surface to facilitate generally even airflow, thereby providing comfort and/or improved hygiene for the patient when an air moving device is connected to the apparatus and the air moving device is powered on.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: March 3, 2009
    Inventor: Rick D. Dunagan
  • Patent number: 7229425
    Abstract: A method and apparatus for aerating a fracture sight that employs a membrane or covering that wraps and seals the outside of a breathable, orthopedic cast and typically includes an array of spaced apart protrusions on an inside surface to facilitate generally even airflow, thereby providing comfort and/or improved hygiene for the patient when an air moving device is connected to the apparatus and the air moving device is powered on.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: June 12, 2007
    Inventor: Rick D. Dunagan
  • Patent number: 6645017
    Abstract: In an exemplary embodiment, a marine powertrain includes a flywheel motor generator (MG) directly driven by an engine to which a marine drive is also connected. The MG provides a 36 volt AC power output to charge a 36 volt battery to crank the engine for starting. The marine drive is connected to the engine output shaft through a hollow rotor of the MG. The 36 volt battery may be used directly to power 36 volt loads. Auxiliary 12 volt DC and 110 or 220 volt AC outputs may be provided. The motor generator can also provide sufficient electric power to support an electrically-driven hydraulic system capable of providing for power steering, trim and other auxiliary hydraulic functions. A selective cylinder deactivation system will allow the engine to operate in a more efficient mode for electric power generation and low power propulsion than with all the cylinders operating.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: November 11, 2003
    Assignee: General Motors Corporation
    Inventors: Mark L. Skrzypek, Stephen Gregory Poulos, Rick D. Dunagan