초록 ▼

There is provided a substantially nonnesting corrugated catalytically active thin metal foil suitable for making a monolith which when encased in a housing and inserted in the exhaust line, e.g., an automobile exhaust line, will remove pollutants in the exhaust. The device is rendered substantially

There is provided a substantially nonnesting corrugated catalytically active thin metal foil suitable for making a monolith which when encased in a housing and inserted in the exhaust line, e.g., an automobile exhaust line, will remove pollutants in the exhaust. The device is rendered substantially nonnesting by forming the corrugations according to guidelines and which corrugations are perpendicular to the longitudinal marginal edges of the metal foil. The pressure drop through the device is thus minimized and the necessity for a flat foil co-laminate is avoided.

대표청구항 ▼

A substantially nonnesting straight corrugated thin metal foil having parallel longitudinally extending marginal edges and wherein the corrugations are parallel to each other and are arrayed in a plurality of sequential repeating units, each of said repeating units including a plurality of patterns;

A substantially nonnesting straight corrugated thin metal foil having parallel longitudinally extending marginal edges and wherein the corrugations are parallel to each other and are arrayed in a plurality of sequential repeating units, each of said repeating units including a plurality of patterns; the length of a repeating unit being no greater than the length of the smallest chord to be made, and the length of each pattern being constant within a repeating unit.