Valve for aerosol container

Details Valve for aerosol container Valve for aerosol container

1987-10-14

1989-09-05

Huppert, Michael S.

Dispensing

With discharge assistant

Fluid pressure

222453, B65D 8306

Patent

active

048630730

ABSTRACT:
A valve is provided for dispensing metered doses from an aerosol container, which contains a substance to be dispensed suspended in a liquid propellant. The valve comprises a valve body (2, 3), first and second valve seals (6,7) at opposite ends of the valve body (2,3), and a valve stem (5) having an outlet (18) and a transfer port (19) extending from the exterior of the valve stem (5) to the outlet (18). A metering chamber (4) is defined by the internal wall of the valve body (2,3), the first and second valve seals (6,7) and the portion of the valve stem (5) within the cavity. The valve stem (5) is biased to a position in which, when the container is orientated with the valve at the bottom, liquid can enter the metering chamber through at least one orifice (12) which communicates with the interior of the container at a location which, when the container is orientated with the valve at the bottom, is an appreciable distance above the nearest surface which is horizontal or has an appreciable horizontal component. The orifice (12) is directed transversely with respect to the direction of movement of the valve stem (5).

REFERENCES:
patent: 1947310 (1934-02-01), Sample et al.
patent: 3404681 (1968-10-01), Fowler
patent: 3587929 (1971-06-01), Usen et al.
patent: 3591059 (1971-07-01), Stearns
patent: 4433797 (1984-02-01), Galia
Bespak BK 300 Pressure Filling Valve.

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