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:
Jan. 29, 2013
Filed:
Nov. 04, 2009
Nobuyuki Murakami, Toyota, JP;
Hiroshi Hosoi, Nisshin, JP;
Hitoshi Shimamura, Toyota, JP;
Jin Wakamatsu, Toyota, JP;
Katsumi Yagi, Ichinomiya, JP;
Kimihiro Jinno, Toukai, JP;
Tatsuki Fukagawa, Nagoya, JP;
Nobuyuki Murakami, Toyota, JP;
Hiroshi Hosoi, Nisshin, JP;
Hitoshi Shimamura, Toyota, JP;
Jin Wakamatsu, Toyota, JP;
Katsumi Yagi, Ichinomiya, JP;
Kimihiro Jinno, Toukai, JP;
Tatsuki Fukagawa, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An exhaust manifold includes: a double collecting pipe formed of inner and outer pipes; and an inner pipe retainer formed of a pair of semi-circular portions and a connecting portion. The inner pipe includes a collecting pipe portion and bifurcated branch pipe portions. The outer pipe covers outer peripheral portions of the collecting and branch pipe portions. The semi-circular portions are respectively connected to outer peripheral portions of branched branch pipe portions and an inner peripheral portion of the outer pipe. The connecting portion connects the semi-circular portions. The inner pipe retainer is interposed between the inner pipe and the outer pipe and is connected to the inner pipe and the outer pipe to define a certain gap therebetween. Exhaust gas from exhaust ports of a set of cylinders among a plurality of cylinders of an engine is introduced into the collecting pipe portion through the branch pipe portions.