Gas capsules and method of filling them

Details Gas capsules and method of filling them Gas capsules and method of filling them

F - Mech Eng,Light,Heat,Weapons

17

C

F17C 13/06 (2006.01)

Patent

CA 2512746

A gas capsule comprises a hollow body portion (1) and a cap (2) including a stem (3) providing a filling orifice (3A). Prior to assembly of the body portion (1) and the cap (2) a stopper member (4) is inserted loosely within the capsule. During filling of the capsule with gas, the stopper member (4) is located within the body of the capsule and, prior to release of the gas pressure at the orifice (3A) of the capsule, the stopper member is moved to obstruct the path of gas from the capsule, for example by inverting the capsule so that the stopper member falis under gravity into a position between the body of the capsule (1) and the filling orifice (3A). The gas pressure is then released so that the stopper member (4) is forced into the stem (3) under the pressure of the gas to form a gas tight seal closing the orifice (3A). The orifice (3A) may then be welded to form a permanent closure.

Une capsule de gaz comprend une partie de corps creux (1) et un capuchon (2) comportant une tige (3) fournissant un orifice de remplissage (3A). Avant l'assemblage de la partie corps (1) et du capuchon (2), un élément d'arrêt (4) est inséré de manière lâche à l'intérieur de la capsule. Lors du remplissage de la capsule avec un gaz, l'élément d'arrêt (4) est disposé à l'intérieur du corps de la capsule et, avant la libération du gaz sous pression au niveau de l'orifice (3A) de la capsule, l'élément d'arrêt est déplacé de manière à obstruer le passage du gaz provenant de la capsule, par exemple au moyen d'une inversion de la capsule permettant à l'élément d'arrêt de tomber sous l'effet de la pesanteur dans une position entre le corps de la capsule (1) et l'orifice de remplissage (3A). le gaz sous pression est ensuite libéré de sorte que l'élément d'arrêt (4) est contraint de rentrer dans la tige (3) sous l'effet de la pression du gaz de manière à former un joint étanche au gaz fermant l'orifice (3A). L'orifice (3A) peut ensuite être soudé aux fins de la formation d'une fermeture permanente.

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