End cone construction for catalytic converters and method for making same

• Main Authors: GRABLE KEITH A, BRISBIN RONALD S, DEPIERRE ROBERT J
• Format: Patent
• Language: English
• Published: 17.02.2005
• Edition: 7
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WEAPONS

An end cone construction and related method for catalytic converters includes first and second inner and outer cone members, each with a small end, a large end and a continuous imperforate sidewall therebetween. The large ends of the first inner and outer cone members are connected with the small ends of the second inner and outer cone members respectively to create airtight seals, and define inner and outer cone assemblies which are positioned concentrically to define an insulating space therebetween. The small ends of the inner and outer cone assemblies are connected with an exhaust pipe, and the large ends of the inner and outer cone assemblies are connected with a catalytic converter can. A vacuum may be drawn in the insulating space to insulate the inner and outer cone assemblies.