Patents by Inventor David Lee McCrary

David Lee McCrary 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).

  • Thermally isolated actuator with temporary contacting linkage for an exhaust valve
    Patent number: 7581710
    Abstract: An exhaust valve assembly includes a valve body, a valve supported by a shaft within the valve body, and an actuator that moves the valve relative to the valve body to control exhaust flow. The actuator is thermally isolated from the valve by a linkage mechanism that cooperates with exhaust flow to move the valve between open and closed positions. The actuator temporarily contacts the linkage mechanism to initiate opening and closing movement but then moves out of contact with the linkage mechanism as the exhaust flow exerts a force against the valve to move the valve to a fully open or fully closed position. This temporary contact between the linkage mechanism and the actuator reduces heat transfer from the valve to the actuator.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: September 1, 2009
    Assignee: EMCON Technologies LLC
    Inventors: Kwin Abram, Joseph Callahan, Robin Willats, David Lee McCrary
  • Thermally isolated actuator with temporary contacting linkage for an exhaust valve
    Publication number: 20080017817
    Abstract: An exhaust valve assembly includes a valve body, a valve supported by a shaft within the valve body, and an actuator that moves the valve relative to the valve body to control exhaust flow. The actuator is thermally isolated from the valve by a linkage mechanism that cooperates with exhaust flow to move the valve between open and closed positions. The actuator temporarily contacts the linkage mechanism to initiate opening and closing movement but then moves out of contact with the linkage mechanism as the exhaust flow exerts a force against the valve to move the valve to a fully open or fully closed position. This temporary contact between the linkage mechanism and the actuator reduces heat transfer from the valve to the actuator.
    Type: Application
    Filed: July 24, 2006
    Publication date: January 24, 2008
    Inventors: Kwin Abram, Joseph Callahan, Robin Willats, David Lee McCrary