The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2002
Filed:
Aug. 04, 2000
Gary D. Goplen, Stoughton, WI (US);
Kory J. Schuhmacher, Oregon, WI (US);
Nelson Industries, Inc., Stoughton, WI (US);
Abstract
A muffler ( ) is provided by upstream and downstream outer shells ( and ) and a single sole internal baffle ( or or ), all three of which are joined to each other around an outer peripheral edge ( ). The internal baffle defines a first chamber ( ) between the internal baffle and the upstream outer shell. The internal baffle has an extension portion ( ) extending away from the upstream outer shell and toward and into the downstream outer shell and forming second and third chambers ( and ) between the internal baffle and the downstream outer shell and forming multiple sound attenuating tubed passages ( and and ) bounded by the downstream outer shell and the extension portion and connecting the second and third chambers on distally opposite ends ( and ) of the extension portion. The baffle has an opening ( ) therethrough adjacent the extension portion and connecting the first and second chambers.