초록 ▼

A muffler including an internal assembly formed of a pair of identical stampings. The internal assembly includes three tubes extending longitudinally between baffles. The internal assembly received within the muffler outer shell forms central upper and lower attenuation chambers as well as chambers

A muffler including an internal assembly formed of a pair of identical stampings. The internal assembly includes three tubes extending longitudinally between baffles. The internal assembly received within the muffler outer shell forms central upper and lower attenuation chambers as well as chambers at each proximal end of the muffler. The stampings are provided with impressions for forming weep holes and allowing acidic condensation to exit the central chambers. The stampings are located in mirror image relation with one another and are attached to one another by a rivet pattern and using the metal of the stampings. The rivets readily allow acidic condensate to flow between the upper and lower central chambers. Louver-shaped openings are provided on the stampings providing communication between the formed tubes and the upper and lower central chambers and thereby providing attenuation. The muffler is generally universal for use on many different exhaust engines and vehicles and is generally corrosion resistant and generally long lasting.

대표청구항 ▼

1. A muffler comprising:an outer shell having an inlet end and an exhaust end; an pair of stampings forming an assembly including at least three tubes extending between baffles, said assembly received in said outer shell and therewith forming a first chamber between said inlet end and a baffle, a se

1. A muffler comprising:an outer shell having an inlet end and an exhaust end; an pair of stampings forming an assembly including at least three tubes extending between baffles, said assembly received in said outer shell and therewith forming a first chamber between said inlet end and a baffle, a second chamber between said outlet end and a baffle, and a central chamber between said baffles; an inlet tube extending through said inlet end and communicating with one of said assembly tubes; an outlet tube extending through said outlet end and communicating with another one of said assembly tubes; a plurality of openings between at least one said assembly tubes and said central chamber; wherein said stampings are provided with impressions for thereby forming weep holes between said central chamber and said first and second chambers whereby condensate may travel between said central chamber and said first or second chambers; and, wherein said impressions are located on a perimeter area of said stampings whereby said weepholes are formed between said stampings perimeter areas and said outer shell.