Patents by Inventor John Penley

John Penley 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).

  • Exhaust gas control device for an engine
    Patent number: 6286307
    Abstract: An improved exhaust gas control device that has a hollow diverter pipe to divert exhaust around the muffler and in which a gate valve is slidably mounted to open and close the hollow pipe thus either forcing the exhaust gas through the muffler or diverting it to the atmosphere.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: September 11, 2001
    Inventors: Robert L. Feeny, John Penley