Improvements in the construction of automatic closure valves for aerosol and analog packaging (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of automatic shut-off valves for aerosol and analogous containers, characterized by a cylindrical seat element, of stamped metal sheet, including an end wall and a side wall integrated with the end wall at the periphery of this, said end wall having a circular central opening constituting an outlet extending part of the end wall marginally around the opening and into the side wall constituting a seat for the valve, said cylindrical seat element being open at the end of the valve. The side wall farthest from the end wall to provide an entrance; a valvular member of compressible elastic material of a flat base portion and a convex portion of narrower apex than, and in opposition to, said base portion and larger diameter than the outlet, said valvular element being in decrease from the base to the vertex part and all its dimensions parallel to the surface of the base are substantially lower than the interior dimensions of the side wall, said valvular element being placed inside the side wall and cooperating with it to define a annular passage, a support element for said valvular element, which is relatively rigid in comparison with said valve element and which has at least parts of its peripheral surface cylindrical and which engage or adjust with the inner surface of the side wall for centering the support element a flat surface transverse to said cylindrical surface, and in which the flat base of valvular element is supported, said support element being provided with passages that provide the communication of the fluid between said inlet and said annular passage, whose valvular element and said support element are capable of being inserted through the entry into the seat cushion element; means integrated with one of said elements for retaining the support element within the cylindrical seat element in a position in which the support element and the end wall cooperate to compress the valve element, the aforementioned vertex part of the valve element cooperating and the end wall, in the case of misalignment of the vertex part of the valve element and the outlet, to apply to the valvular element to force that tends to center the vertex part in the outlet, accommodating the flat support surfaces of the valve element and the element of support the lateral movement of the valve element by means of the aforementioned force necessary to carry out said centering, the said support element then cooperating with the end wall to maintain the vertex part of the valve element in an obligate sealing coupling with the seat; a valve actuator pin; means for supporting the spike on the opposite side of the end wall, from the valve element, in a normal position in which it is adjacent to the valve element, but inefficient to compress it and is in inclination with the outlet, the spike being of smaller diameter by the outlet, the support means of said peg being movable to move the peg from its normal position to an adjustment with the vertex part out of engagement with the seat, thereby opening the valve to provide communication of the fluid between the annular passage and the exit. (Machine-translation by Google Translate, not legally binding)