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. 21, 1995
Filed:
Jun. 07, 1994
Stephane Venturi, La Rochette, FR;
Institut Francais du Petrole, Rueil Malmaison, FR;
Abstract
The object of the present invention is a seal device for a valve rod controlled by a cam included in a camshaft housing of an internal-combustion engine having at least one cylinder. The device according to the invention includes a pipe (10) connecting on the one hand a feed line (2) for feeding the carbureted mixture into a combustion chamber (1) closed by a valve (5) and, on the other hand, a camshaft housing (4). A nonreturn valve (11) is arranged in said pipe (10) in order to divide said pipe (10) into two volumes (12, 13), the first volume (12) being connected to housing (4) and forming a capacity under pressure having a pressure P1 greater than or equal to the pressure P2 prevailing in feed line (2) and in the second volume (13). The device according to the invention is intended for preventing fuel leaks from the feed line (2) towards the camshaft housing (4).