B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 83/66 (2006.01)
Patent
CA 2617203
A novel pressure control device is provided comprising a first cylinder (3) at a predetermined excess pressure, a piston (4) with a sealing ring (5) being movable within said first cylinder, and a second cylinder (7). The first cylinder (3) is encompassed by the second cylinder (7) as to form a ring-shaped passage which is leading to the outside. A valve in said passageway is released and closed by a stem (14) of the piston (4). The open end of the first cylinder (3) is provided with at least one axially directed incision (37), such that the piston (4) with the sealing ring (5) introduced in the first cylinder (3) and covering the end of the incision (37) is in a non-pressurized position. The stem (14) has a stop element (15) which closes the valve in the upper position of the piston, wherein the piston stroke essentially defines the excess pressure.
La présente invention se rapporte à un dispositif de régulation de la pression, qui comprend un premier cylindre (3) présentant une surpression prédéterminée, un piston (4) doté d'un anneau d'étanchéité (5) pouvant se déplacer à l'intérieur dudit premier cylindre, et un second cylindre (7). Le second cylindre (7) entoure le premier cylindre (3), de manière à former un passage annulaire menant vers l'extérieur. Une soupape placée dans ledit passage est libérée et fermée par la tige (14) du piston (4). L'extrémité libre du premier cylindre (3) est dotée d'au moins une incision axiale (37), de façon que le piston (4), dont l'anneau d'étanchéité (5) est introduit dans le premier cylindre (3) et recouvre l'extrémité de l'incision (37), se trouve dans une position non pressurisée. La tige (14) possède un élément d'arrêt (15) qui ferme la soupape dans la position supérieure du piston, la course du piston définissant essentiellement la surpression.
Regan Phil
Van Swieten Roy
Van Wieringen Niels
I.p.s. Research & Development B.v.
Intelligent Packaging Systems Group Sa
Moffat & Co.
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