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:
Jun. 13, 2017
Filed:
Oct. 01, 2013
L'air Liquide, Société Anonyme Pour L'etude ET L'exploitation Des Procédés Georges Claude, Paris, FR;
Guillaume Roberge, Maubec, FR;
Abstract
The invention relates to a residual pressure valve device comprising a shut-off member () that is able to move in the body () relative to a seat (), a return member () that urges the shut-off member () by default towards the seat (), the shut-off member () comprising an internal duct () having a first end in communication with the gas inlet () and a second end that leads, via a calibrated orifice (), into a control chamber () that is closed by the shut-off member () such that, when the gas pressure in the control chamber () reaches a predetermined threshold, this pressure causes the shut-off member () to move away from the seat (), the body of the shut-off member () comprising a first portion () that forms a male element which is able to move in translation in a female passage of the body () with a predetermined fit forming a restriction ensuring partial and progressive opening of the passage for the gas between the inlet () and the outlet ().