Patent ID: 8057746

Claim:
A carrier construction for purification of exhaust gas comprised of a carrier coated with a catalyst to get harmful materials including particulate matters and soot disappeared with burning or oxidizing-reducing reaction to purify the exhaust gas, and a canister that fits over the carrier; wherein the carrier is constituted with a laminate web of wire netting or a metallic nonwoven fabric wound up into a cylindrical column or stacked on top of the other into a column, the laminate web including at least a sheet of corrugated web having ridges extending parallel with an axis of the column or obliquely to the axis of the column and grooves between successive ridges to make channels through which the exhaust gas is passed from any one side to other side of the column with accompanying turbulent flow caused by a crimped surface of the web, wherein the laminate web is composed of the corrugated web overlapped on top of the other, or the corrugated web and a flat web overlapped alternately each other, wherein the ridges on the corrugated web extend zigzag with respect to the axis of the column to make zigzag channels through which the exhaust gas is passed, and wherein the ridges on the corrugated web are embossed obliquely to have a series of angles across angular range of 10Â°Ëœ50Â° with respect to the axis of the column to form the zigzag channels through which the exhaust gas is passed.