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. 09, 2004
Filed:
Mar. 18, 2002
Mazda Motor Corporation, Hiroshima, JP;
Abstract
An exhaust system having an exhaust manifold that comprises a plurality of single-shell discrete exhaust pipes connected to an engine, a double-shell collective chambered pipe joined to the discrete exhaust pipes and comprising an internal pipe shell into which exhaust gas streams passing through the discrete exhaust pipes are introduced and merge together and an external pipe shell surrounding the internal pipe shell, and a spherical joint connecting the collective chambered pipe to the exhaust pipe. The discrete exhaust pipe has a bent portion and a straight portion continuously extending from the bent portion to the collective chambered pipe. The bent portions of the respective discrete exhaust pipes are oriented toward a center of a straight row of cylinders so as to lay the straight portions of the discrete exhaust pipes nearly parallel to one another.