Patent ID: 6338826
Filing Date: 2002-01-15
Classification: B01D,F01N,F23J

Abstract:
A honeycomb-containing structure, which comprises:a metal case having an inner surface and at least two openings; a honeycomb structure, having passages and two end faces, a circumference defined by the outer edge of each end face and an outer surface between the end faces, the honeycomb structure being located inside the metal case; a holding member placed between the outer surface of the honeycomb structure and the inner surface of the metal case; and a cone fitted to the inner surface of the metal case at one or both openings of the metal case, wherein the outer surface at the circumference of one or both end faces of the honeycomb structure is rounded thereby presenting a rounded surface between the end face and the outer surface, the rounded surface abutting at least one cone, and wherein (1) basically none of the passages of the honeycomb structure are blocked and basically the whole volume of the honeycomb structure can be effectively used and (2) the radius of rounding of the circumference of the end face of the honeycomb structure is 0.1 to 1 mm.