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:
Feb. 10, 1987
Filed:
Jan. 13, 1986
Applicant:
Inventor:
Yoshimichi Tanaka, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02F / ;
U.S. Cl.
CPC ...
123 / ; 1231 / ;
Abstract
A cylinder head for a multicylinder DOHC internal combustion engine comprises an upper deck for supporting a pair of spaced camshafts for driving intake and exhaust valves and having spark plug wells equal in number to the cylinders in the engine. The upper deck is integrally formed with a row or tubular columns for surrounding the respective spark plugs. Each neighboring columns are connected together by means of a connecting rib extending longitudinally of the engine for impart a rigidity to the cylinder head effective to resist against the tendency of a cylinder head to warp in a direction longitudinally of the engine.