Valve closing device

Details Valve closing device Valve closing device

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/00 (2006.01) E21B 34/06 (2006.01) E21B 34/00 (2006.01)

Patent

CA 2422996

An apparatus capable of moving a shiftable valve member into a closed position, the shiftable valve member mounted in a valve housing having a bore and being moveable between at least one open and at least one closed position relative to the bore, includes at least one elastically deformable member that extends at least partially around the circumference of the bore and is disposed at least partially in a cavity in the valve housing. Each elastically deformable member is elongated, has first and second ends and is connected to the shiftable valve member at one location and to the valve housing at at least one other location. Each elastically deformable member is torsionally loaded to provide biasing, closing force to the shiftable valve member to assist in moving the shiftable valve member into a closed position and retaining it in the closed position.

Appareil capable de déplacer l'élément mobile d'une valve vers une position fermée. Cette partie mobile est montée à l'intérieur d'un boitier doté d'un orifice de passage et pouvant être déplacé d'une position ouverte à au moins une position fermée par rapport à celui-ci. Elle comprend au moins un élément déformable par élasticité disposé au moins partiellement le long de la circonférence de l'orifice et inséré au moins en partie dans un trou sur le boitier de la valve. Chaque élément déformable par élasticité est allongé, possède deux extrémités, et est relié d'une part à l'élément mobile de la valve, et d'autre part à son boitier en un ou plusieurs points. Une force de torsion est appliquée à chaque élément déformable par élasticité afin de créer une force permettant la fermeture de biais de l'élément mobile de la valve en l'amenant et en le maintenant dans une position fermée.

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