Patent ID: 6602477
Filing Date: 2003-08-05
Classification: B01J,F01N,Y10T

Abstract:
A metal honeycomb core body comprising:a honeycomb structure used for carrying exhaust gas cleaning catalyst, said honeycomb structure including corrugated band members and planar band members made of a thin-walled metal sheet, said honeycomb structure is fabricated by bringing said corrugated and planar band members alternately into contact, wherein said corrugated band members are shaped into a first waveform, said first waveform is a triangular or sinusoidal waveform having a waveheight (h) and one period length (&lgr;), wherein alternating troughs of the first waveform are truncated such that said first waveform has a structure comprising: a first portion where the first waveform of said corrugated band members is in contact with said planar band members on a pair of an adjacent crest and trough of a wave, a second portion of the corrugated band members that is not in contact with said planar band members and is connected adjacent to the first portion, and a third portion with at least one end that is in contact with said planar band members and is connected adjacent to said second portion, wherein the second portion is formed to have a height of about one half of the waveheight (Â½Â·h) of said first waveform, and the first waveform is constituted by connecting the first, second, and third portions to form said first waveform of one period length (&lgr;).