| US 7,587,819 B1 | ||
| Insert for a catalytic converter and method and apparatus for forming an insert for a catalytic converter | ||
| Herbert L. Hall, Jr., 1371 Pleasant Valley Rd., Newark, Ohio 43055 (US) | ||
| Filed on Dec. 23, 2003, as Appl. No. 10/744,284. | ||
| Claims priority of provisional application 60/436049, filed on Dec. 23, 2002. | ||
| Int. Cl. B01D 50/00 (2006.01); B21D 39/00 (2006.01); B21D 51/16 (2006.01); B23K 31/02 (2006.01); B23P 15/26 (2006.01) | ||
| U.S. Cl. 29—890 [29/890.043; 29/890.08; 228/181; 422/177; 422/179; 422/180; 428/116; 428/593; 502/439] | 17 Claims |
| 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.
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