Patents by Inventor Dave Allison

Dave Allison 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).

  • Triple baffled muffler
    Patent number: 9587537
    Abstract: A triple-baffled muffler enables an engine sound that changes from very quiet when idling to louder as the throttle is pressed. The muffler provides three baffles which are hinged over the center of the muffler. The exhaust pressure travels through the muffler and pushes the baffles until they open to release the pressure. The angle of incidence of the baffles on their hinges governs the loudness of the sound.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: March 7, 2017
    Inventor: Dave Allison
  • Triple baffled muffler
    Publication number: 20160160718
    Abstract: A triple-baffled muffler enables an engine sound that changes from very quiet when idling to louder as the throttle is pressed. The muffler provides three baffles which are hinged over the center of the muffler. The exhaust pressure travels through the muffler and pushes the baffles until they open to release the pressure. The angle of incidence of the baffles on their hinges governs the loudness of the sound.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 9, 2016
    Inventor: Dave Allison