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.:

US 6874317 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 05, 2005

Filed:

Jun. 18, 2002
Applicants:

Daisuke Sugaya, Tokyo, JP;

Katsumi Amada, Tokyo, JP;

Satoshi Azuma, Tokyo, JP;

Inventors:

Daisuke Sugaya, Tokyo, JP;

Katsumi Amada, Tokyo, JP;

Satoshi Azuma, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N007/10 ;
U.S. Cl.
CPC ...
Abstract

A double pipe exhaust manifold includes an inner pipe, an outer pipe formed in a cylindrical shape by joining at least one side edge thereof by welding, a space retaining member disposed in an annular space defined between the inner pipe and the outer pipe, a connection pipe connecting to a exhaust gas recirculation valve, and a mesh ring. Opening holes are formed in the inner pipe and the outer pipe so that the opening holes are opposed to each in a radial direction of the pipes. The connection pipe is connected to the opening hole of the outer pipe. The mesh ring is interposed between the inner pipe and the outer pipe in a state that the mesh ring plugs an annular opening part defined between opening edges of the opening holes.


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Sugaya, Daisuke. (2005). Double pipe exhaust manifold (U.S. Patent No. 6874317). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6874317

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