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:
Mar. 20, 2012
Filed:
May. 28, 2008
David Duch, Brookfield, WI (US);
Gary Gracyalny, Elm Grove, WI (US);
John Thiermann, Greenfield, WI (US);
David Duch, Brookfield, WI (US);
Gary Gracyalny, Elm Grove, WI (US);
John Thiermann, Greenfield, WI (US);
Briggs & Stratton Corporation, Wauwatosa, WI (US);
Abstract
A catalytic muffler that treats the exhaust gases of an internal combustion engine. The catalytic muffler includes a catalyst chamber, a catalyst disposed in the catalyst chamber, an upstream chamber disposed upstream of the catalyst, an exhaust inlet configured to receive exhaust gases, an exhaust outlet configured to discharge converted gases converted by the catalyst to the atmosphere, and further configured to receive secondary air, and a passageway communicating between the exhaust outlet and the upstream chamber, and configured to provide the secondary air received by the exhaust outlet to the upstream chamber.