Christopher D Berger

US Patent:

58697934, Feb 9, 1999

Filed:

Dec 9, 1997

Appl. No.:

8/987414

Inventors:

Christopher J. Berger - South Russell OH
Terry Goettle - Olmsted Township OH
Peter Levin - Davis CA

Assignee:

Supertrapp Industries, Inc. - Cleveland OH

International Classification:

F01N 124

US Classification:

181256

Abstract:

An engine muffler and spark arrester includes an oval shaped outer tube extending along an axis and having an inlet end and an outlet end. A plurality of substantially identical nested oval shaped disks are disposed coaxially adjacent the outlet end. Each of the disks has an oval shaped centrally located aperture. An inner tube is disposed coaxially within the outer tube. The inner tube has a circular inlet end and an oval-shaped outlet end. An oval end cap is disposed adjacent the disks. A sound absorbent material can be disposed in a cavity defined between the inner tube and the outer tube. An oval-shaped inlet cap is secured to the inlet end of the outer tube with the inlet cap having a circular centrally located aperture extending therethrough. An oval-shaped outlet cap is secured to the outlet end of the outer tube. The outlet cap has an oval-shaped centrally located aperture extending therethrough.