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:
Mar. 02, 2010
Filed:
Nov. 30, 2004
Masaaki Ashida, Yokohama, JP;
Sunkee Yi, Kanagawa, JP;
Takao Inoue, Yokohama, JP;
Shunichi Mitsuishi, Kanagawa, JP;
Masaaki Ashida, Yokohama, JP;
Sunkee Yi, Kanagawa, JP;
Takao Inoue, Yokohama, JP;
Shunichi Mitsuishi, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
An exhaust manifold connected to exhaust ports of at least three straightly-arranged cylinders of an internal combustion engine is constructed by a primary exhaust pipe which extends from the foremost cylinder of the cylinders in the rearward direction of the engine along the direction of the straight arrangement of the cylinders and a plurality of secondary exhaust pipes which extend from the other cylinders except for the foremost cylinder to the primary exhaust pipe. The secondary exhaust pipes are collected to the primary exhaust pipe so that downstream end portions of the secondary exhaust pipes are wound into the center axis of the primary exhaust pipe at a plurality of points on the center axis, respectively.