Patent ID: 6919052

Claim:
A catalytic converter comprising: a catalyst substrate comprising a catalyst, and having a first lip concentrically disposed about a first end of said catalyst substrate, a second lip concentrically disposed about a second end of said catalyst substrate, at least one ridge therebetween, and an outer surface such that the ridge is spaced apart form the first lip by said outer surface and spaced apart from the second lip by said outer surface, said outer surface having an outer surface diameter less than the outer diameter of the ridge; a shell having an opening, and concentrically disposed around said catalyst substrate, said shell comprising a U-shaped attachment opposite the ridge; and a first mat support material disposed about the outer surface between said ridge and the first lip, and a second mat support disposed about said outer surface between said ridge and the second lip and spaced apart from the first mat support material by a gap between said ridge and said shell, whereby the U-shaped attachment is disposed with said gap.