The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 1976
Filed:
Jan. 23, 1976
Robert Joseph Fedor, Westlake, OH (US);
Gould Inc., Rolling Meadows, IL (US);
Abstract
A system for reducing NO.sub.x gases found in the exhaust stream of the internal combustion engine is provided which includes an internal combustion engine having associated therewith a means for supplying fuel and oxygen to the engine, a manifold system for directing or channeling the exhaust gases from the engine, and a NO.sub.x reducing catalyst assembly communicating with the manifold which includes a housing having a NO.sub.x reducing catalytic structure of apertured thin metal foil positioned therein which includes, in one aspect, a plurality of sheets of expanded metal foil wherein at least one sheet of expanded metal foil has at least some openings therein which are of a different size than at least some openings in a juxtapositioned sheet of expanded metal foil. In another aspect, it includes a sheet of expanded metal foil having at least some openings of different sizes.