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.

Date of Patent:
Dec. 09, 2008

Filed:

Apr. 17, 2006
Applicant:

Yukihiro Nakagawa, Kasugai, JP;

Inventor:

Yukihiro Nakagawa, Kasugai, JP;

Assignee:

Nakagawa Sangyo Co., Ltd., Nishikasugai-gun, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

An exhaust pipehaving a circular cross section is connected to a circular cylindrical housingwhich creates part of pipe conduit. The housingforms a storage spacehaving a diameter larger than the diameter of the exhaust pipeand connecting to the rear connection part. The connection partis tapered toward the downstream exhaust pipeand the diameter of the connection partis gradually reduced and its opening is welded into the opening of the downstream exhaust pipe. And a cylindrical honeycomb catalyst carrieris stored in the storage spaceso that the outer surface of the catalyst carrier is in contact with the inner surface of the storage space. An expanded portionhaving a diameter larger than the diameter of the storage spaceis outwardly expanded from the outer circumference of the housingand connectingly provided on the front face of the storage space. The diameter of the expanded portionis gradually reduced toward the upstream exhaust pipeand welded into the opening of the outer wall of the exhaust pipe


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