Fluid flow control cock fitted with a lever having several...

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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F16K 1/30 (2006.01)

Patent

CA 2458241

The invention relates to a cock that is used to control the flow of a pressurised fluid, in particular a medical or industrial gas. The inventive cock consists of: a body (1) with an internal fluid distribution circuit (3, 31, 32) comprising an internal fluid passage which fluidically connects a fluid inlet (31) with a fluid outlet (32); means for controlling the fluid flow (4) that can be used to enable or prevent the circulation of fluid in said passage (3); and handling means which are provided with a pivoting lever that is actuated manually by an operator and which co-operate, directly or indirectly, with the fluid flow control means (4). The pin lever (2) (YY) pivots around a pivot point (XX) and can move between at least three stable positions which are angularly staggered in relation to each other. In the rest position, said lever (2) is fixed and solidly connected to the body (1) of the cock and there is zero fluid flow in the internal passage. In the intermediary released position, the axis (YY) of the lever is disposed at a positive non-zero angle .alpha. in relation to axis YY of the lever (2) in the rest position, said lever (2) being disconnected from the body (1), and the fluid flow is still zero. In the active position, axis YY of the lever (2) is disposed at a positive non-zero angle .beta. in relation to axis YY of the lever (2) in the intermediary released position, said lever (2) being disconnected from the body (1), and fluid is flowing through the internal passage at a non-zero flow rate. The invention also relates to a gas cylinder equipped with one such cock.

Un robinet permettant de contrôler le débit d'un fluide sous pression, notamment d'un gaz industriel ou médical, comportant un corps (1) de robinet comprenant un circuit interne de distribution de fluide (3, 31, 32) comprenant un passage interne de fluide reliant fluidiquement un orifice d'entrée (31) a un orifice de sortie (32) de fluide ; des moyens de contrôle du débit (4) de fluide pour permettre ou pour empêcher une circulation de fluide dans ledit passage (3) ; des moyens de manipulation avec un levier pivotant, actionnable manuellement par un opérateur, et coopérant, directement ou indirectement, avec les moyens de contrôle (4) du débit de fluide. Le levier (2) d'axe (YY) pivote autour d'un axe de pivotement (XX) et mobile entre au moins trois positions stables et angulairement décalées les unes des autres. Dans sa position de repos, le levier (2) est maintenu fixé et solidaire du corps (1) du robinet et le débit de fluide dans ledit passage interne est nul. Dans sa position intermédiaire libératoire, l'axe (YY) du levier (2) est décalé d'un angle .alpha. positif et non nul par rapport à l'axe (YY) du levier (2) en position de repos, le levier (2) étant désolidarisé du corps (1) et le débit de fluide est toujours nul. Dans sa position active, !'axe (YY) du levier (2) est décalé d'un angle .beta. positif et non nul par rapport à l'axe (YY) du levier (2) en position intermédiaire libératoire, le levier (2) étant désolidarisé du corps (1) et il s'opère une circulation du fluide à un débit non nul dans ledit passage interne. Bouteille de gaz équipée d'un tel robinet.

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