Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1991-07-19
1992-09-22
Epstein, Henry F.
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
55523, 156 89, 264162, 26417711, 26417712, 428116, 428188, 502527, B32B 312
Patent
active
051494752
ABSTRACT:
A honeycomb structure as a substrate for at least one catalyst includes a ridge arranged on at least one part of an outer surface of the honeycomb structure and extending in a direction of through-apertures thereof, and at least one notch formed in the at least one ridge. A method of producing the honeycomb structure includes the steps of extruding a ceramic batch to form a honeycomb structure having a ridge in the form of a shape extending at least one part of the honeycomb structure in cross-section, and removing at least at one part of the ridge in directions of through-apertures of the honeycomb structure to form a notch. With the arrangement of the honeycomb structure, it is possible to prevent any shifting of the honeycomb structure in directions of through-apertures of the structure and rotation of the structure about its axis relative to a converter can without closing any ends of through-apertures.
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Horikawa Osamu
Ikeshima Koichi
Epstein Henry F.
NGK Insulators Ltd.
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