Patents by Inventor Richard Rule

Richard Rule 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).

  • Valve for controlling slurry flow
    Patent number: 7461829
    Abstract: The invention relates to a seal to be used as a valve stem seal in a valve for controlling flows containing solid material such as slurry flows with an actuator. The seal is positioned outside of the valve body so that the inside of the seal and the valve body form an essentially closed space for the flow to be controlled.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: December 9, 2008
    Assignee: Outotec Ojy
    Inventor: Richard Rule
  • Seal for a valve
    Publication number: 20060118753
    Abstract: The invention relates to a seal to be used as a valve stem seal in a valve for controlling flows containing solid material such as slurry flows with an actuator. The seal is positioned outside of the valve body so that the inside of the seal and the valve body form an essentially closed space for the flow to be controlled.
    Type: Application
    Filed: June 3, 2004
    Publication date: June 8, 2006
    Inventor: Richard Rule