Patents Assigned to Allied Witan Company
  • Patent number: 5489753
    Abstract: An auto-adjusting damper assembly for an air muffler, such assembly including a spring loaded damper plate located above an outlet hole for transferring some of the energy of incoming air into a mechanical movement of such damper.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: February 6, 1996
    Assignee: Allied Witan Company
    Inventor: Steve Gibel