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:
Feb. 13, 2007
Filed:
Nov. 03, 2000
Peter Gunnarsson, Gränna, SE;
Esbjörn Ollas, Huskvarna, SE;
Mattias Ossiansson, Huskvarna, SE;
Aktiebolaget Electrolux, Stockholm, SE;
Abstract
The subject invention refers to a muffler comprising a muffler housing () and generally a catalytic converter element () mounted in the housing, which muffler has at least one inner outlet () through which exhaust gases cleaned by the catalytic element () are intended to pass. Furthermore, according to the invention an outlet duct () is arranged in connection to the outside of the housing, comprising a first section () for leading exhaust gases in a first direction (A) in parallel with the outside of the housing, and a second section () for leading exhaust gases in a second, opposite direction (B), whereby said first and second sections () have an essentially equally large cross-sectional area. By way of this outlet duct an improved cooling of the exhaust gases before they are brought in contact with fresh air rich in oxygen can be achieved. A back-pulsation of fresh air into the muffler can also be prevented.