Patent ID: 7818881

Claim:
A vehicle exhaust system comprising: a first exhaust member having an end that includes an enlarged section; and a second exhaust member sized to receive a portion of the first exhaust member, the enlarged section of the first exhaust member having an outer diameter that is larger than an inner diameter of at least one section of the second exhaust member for creating an interference condition between the first and second exhaust member to prevent axial movement of the first exhaust member in at least one axial direction, the second exhaust member including a receiving section that is a stepped surface for receiving the enlarged section of the first exhaust member, the first exhaust member having a first impact surface overlapping a second impact surface of the second exhaust member, the first exhaust member further including a stepped surface that nests with the stepped surface of the second exhaust member, wherein the first impact surface of the first exhaust member is fused to the second impact surface of the second exhaust surface by magnetic pulse welding for securing the first exhaust member to the second exhaust member, and wherein the stepped surface of the first exhaust member is formed during the magnetic pulse welding.