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:
Dec. 20, 2011
Filed:
Apr. 13, 2005
Stéphane Beucher, Sartrouville, FR;
Bernard Dusser, Saint Martin de Nigelles, FR;
Nicolas Giraud, Neauphle le Chateau, FR;
Stéphane Beucher, Sartrouville, FR;
Bernard Dusser, Saint Martin de Nigelles, FR;
Nicolas Giraud, Neauphle le Chateau, FR;
Siemens S.A.S, Saint-Denis Cedex, FR;
Abstract
A valve assembly has a valve body having an inlet section for a pressurized fluid and an outlet. A piston is movable within the valve body between an open position and a closed position blocking fluid communication. The piston has an end section, a sealing section and a middle section located between the end section and the sealing section. A cavity receives the piston within the valve body. The cavity has a superior chamber, an intermediate chamber, and an inferior chamber. A spring within the superior chamber exerts a spring force onto the piston to urge the piston towards the open position. An actuator device provides upon actuation for a first flow of fluid outside the cavity from the inlet section to the superior chamber. The first flow causes a pressure within the superior chamber to increase until it is about the same as the pressure within the container so that the spring force moves the piston to the open position. In the open position a main flow of fluid flows from the inlet section via the intermediate chamber to the outlet.