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:
Jul. 22, 2003
Filed:
Oct. 30, 2001
Applicant:
Inventor:
Ronald G. Huff, Westlake, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 1/02 ;
U.S. Cl.
CPC ...
F01N 1/02 ;
Abstract
A high performance muffler for an internal combustion engine of a passenger vehicle includes a straight through main pipe and a side branch open at one end to the main pipe and at the other end to the atmosphere. The side branch is tuned to attenuate a noise frequency that is loudest in the passenger compartment of the vehicle when the engine is operated without a muffler. Numerous embodiments of the invention are disclosed including arrangements in which the side branch pipe has acoustic path sections that are folded on one another to reduce the axial length of a main envelope of the side branch pipe.