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:
Apr. 21, 1981
Filed:
Sep. 25, 1979
Jean P Coulin, Enghien-les-Bains, FR;
Societe d'Etudes de Machines Thermiques S.E.M.T., Saint-Denis, FR;
Abstract
A valve, in particular for an internal combustion engine, of the mushroom type cooled by forced circulation of a cooling fluid, comprising a valve stem having at least two longitudinal cooling passage-ways and a valve head being provided with a substantially peripheral cooling passage-way extending in a substantially parallel plane to the lower plane surface of the head and with at least two substantially radial passage-ways connecting the said longitudinal passage-ways to the said peripheral passage-way, wherein said passage-ways provided in the said valve head are constituted by rectilinear passage-way lengths extending from the periphery of said head and opening outwardly, said peripheral passage-way being in the shape of a polygon, and said rectilinear passage-ways are obturated at their outward opening.