Dispensing – With filter – Associated with vent passage
Patent
1977-03-03
1979-02-27
Scherbel, David A.
Dispensing
With filter
Associated with vent passage
137199, 137588, 22240218, 222564, 239333, 239337, B65D 8314
Patent
active
041414721
ABSTRACT:
An aerosol container is provided, especially intended for use with compositions containing liquefied flammable propellants, and having a gas-permeable membrane that is impermeable or at best only slowly permeable by liquefied propellants, and impeding liquid flow via a gas tap orifice through an open manually-operated delivery valve, at least when the container is tipped from the upright position beyond the horizontal towards the fully inverted position, the container comprising, in combination, a pressurizable container having at least one storage compartment for an aerosol composition and a liquefied propellant in which compartment liquefied propellant can assume an orientation according to orientation of the container between a horizontal and an upright position, and a horizontal and an inverted position; a delivery valve movable manually between open and closed positions, and including a valve stem and a delivery port; an aerosol-conveying passage in flow connection at one end with the storage compartment and at the other end with the delivery port, manipulation of the delivery valve opening and closing the passage to flow of aerosol composition and propellant from the storage compartment to the delivery port; and a gas-permeable membrane that is at best only slowly permeable by liquefied propellant, disposed across the line of flow from the storage compartment to the delivery port of liquefied propellant, and impeding flow of liquefied propellant to the delivery port, at least in an orientation of the container between the horizontal and an inverted position.
REFERENCES:
patent: 2183639 (1939-12-01), Burdick et al.
patent: 3326230 (1967-06-01), Frank
patent: 3525497 (1970-08-01), Zalan
patent: 3912131 (1975-10-01), Friedman et al.
patent: 4035303 (1977-07-01), Ufferfilge
Marra Dorothea C.
Osipow Lloyd I.
Small Marvin
Spitzer Joseph G.
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