Invention Grant
- Patent Title: Residual pressure valve device, valve and cylinder having such a device
-
Application No.: US14433266Application Date: 2013-10-01
-
Publication No.: US09677715B2Publication Date: 2017-06-13
- Inventor: Guillaume Roberge
- Applicant: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
- Applicant Address: FR Paris
- Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
- Current Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
- Current Assignee Address: FR Paris
- Agent Elwood L. Haynes
- Priority: FR1259299 20121002
- International Application: PCT/FR2013/052334 WO 20131001
- International Announcement: WO2014/053764 WO 20140410
- Main IPC: F16K31/12
- IPC: F16K31/12 ; F17C13/04

Abstract:
The invention relates to a residual pressure valve device comprising a shut-off member (1) that is able to move in the body (9) relative to a seat (2), a return member (5) that urges the shut-off member (1) by default towards the seat (2), the shut-off member (1) comprising an internal duct (6) having a first end in communication with the gas inlet (3) and a second end that leads, via a calibrated orifice (8), into a control chamber (7) that is closed by the shut-off member (1) such that, when the gas pressure in the control chamber (7) reaches a predetermined threshold, this pressure causes the shut-off member (1) to move away from the seat (2), the body of the shut-off member (1) comprising a first portion (11) that forms a male element which is able to move in translation in a female passage of the body (9) with a predetermined fit forming a restriction ensuring partial and progressive opening of the passage for the gas between the inlet (3) and the outlet (4).
Public/Granted literature
- US20150276132A1 RESIDUAL PRESSURE VALVE DEVICE, VALVE AND CYLINDER HAVING SUCH A DEVICE Public/Granted day:2015-10-01
Information query