Patents by Inventor John William Ash

John William Ash 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).

  • Directed air flow coupling guard
    Patent number: 6474934
    Abstract: Method and apparatus are described for a guard for a rotating member. The guard comprises a shell surrounding the rotating member, and a plenum member concentrically spaced from an interior surface of the shell, the shell comprising an inlet for receiving air and an outlet for discharging the air so that rotation of the rotating member draws air through the inlet and into the plenum member and the air circulates through the plenum member to cool the shell before it exhausts through the outlet.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: November 5, 2002
    Assignee: Dresser-Rand Company
    Inventors: William Henry Jahnke, Jr., John William Ash, Charles Alexander Greenawalt