Dispensing – With discharge assistant – Fluid pressure
Patent
1978-12-22
1980-07-08
Nilson, Robert G.
Dispensing
With discharge assistant
Fluid pressure
137595, 22240224, B65D 8314
Patent
active
042113474
ABSTRACT:
The present valve is for use on an aerosol container having a propellant. It has an axially displaceable, tubular valve body with an eduction passageway leading up to an orifice located below an internal dividing wall, and a product discharge passageway leading up from another orifice located above this wall. An upper, annular, elastomeric gasket closes these orifices in the normal position of the valve body. A lower, annular, elastomeric gasket directly below the upper gasket normally closes a separate propellant discharge passageway in the valve in the normal position of the tubular valve body. When the valve body is displaced downward from its normal position, a first annular passageway is formed between the two gaskets to connect the eduction passageway to the product discharge passageway, and a second annular passageway is formed below the lower gasket to open the propellant discharge passageway to pass gaseous propellant from inside the container. The flow of the gaseous propellant from inside the container is restricted before reaching the lower gasket and the propellant discharge passageway.
REFERENCES:
patent: 3061203 (1962-10-01), Kitabayashi
patent: 3606963 (1971-09-01), Marand
patent: 3612362 (1971-10-01), Champagne
patent: 3615042 (1971-10-01), Marand
patent: 3669316 (1972-06-01), Corsette
patent: 3841602 (1974-10-01), Mildern
patent: 3982674 (1976-09-01), Mildern
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