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. 22, 1977
Filed:
Jan. 13, 1975
Applicant:
Inventor:
Jean-Claude Bouquet, Pantin, FR;
Assignee:
Societe d'Etudes de Machines Thermiques, Saint Denis, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P / ;
U.S. Cl.
CPC ...
123 4176 ; 123 4141 ; 1231 / ; 123 4185 ;
Abstract
An integrally moulded overhead valve chest for an internal combustion engine, comprising a cage having several arms and formed with an annular valve seat cooling chamber and a valve stem guide formed with an annular guide cooling chamber which communicates with said seat cooling chamber through at least one duct formed within one arm, wherein the improvement consists in at least one hole extending through the radially outer wall of one of said cooling chambers and stopped or closed off by a welded or brazed plug.