Patent ID: 7587819
Filing Date: 2009-09-15
Classification: B21K,B23P,F01N,Y10T

Abstract:
1. A method of forming an insert for a catalytic converter comprising: providing an open-ended, single piece mantle having end portions; wrapping a catalytic core with a fibrous packing; inserting the wrapped core into the mantle; and subsequently subjecting the mantle to a forming process that applies pressure to the end portions of the mantle to reshape the end portions into converging tapered portions capable of retaining the wrapped core in place within the mantle, wherein the forming process includes causing the end portions of the mantle to compress the fibrous packing at the end portions of the core so that the fibrous packing at the end portions of the core has a greater density than the density of the fibrous packing at an intermediate portion of the core.