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. 23, 1993
Filed:
Apr. 02, 1992
Applicant:
Inventor:
Jacques Fournier, Bretigny S/Orge, FR;
Assignee:
Schlumberger Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
137509 ; 13763014 ;
Abstract
The invention relates to a valve with a control chamber and with controlled closing, especially for hydrocarbon fuel dispensers. In order to avoid abrupt closing of the valve, especially in the case of accidental or abnormal operation of the dispenser, the valve is formed by a first piston, which can cooperate with a fixed seat to block the duct, and a second piston on which the control fluid acts. The first piston is provided with a bore which is closed when the second piston is applied to the first piston. A spring is fitted between the two pistons.