Dispensing – With discharge assistant – Movable or conveyer-type trap chamber
Patent
1986-09-09
1989-04-11
Shaver, Kevin P.
Dispensing
With discharge assistant
Movable or conveyer-type trap chamber
22240216, 2224022, 12820023, G01F 1110
Patent
active
048198340
ABSTRACT:
The present invention relates to metering valves and methods for repeatedly delivering a precise amount of a pressurized fluid such as an aerosol. Each metering valve is configured such that the metering chamber exists only upon actuation of the valve stem to dispense a dosage. Thus, the metering chamber is created, filled with aerosol formulation, and emptied during the brief moment that the valve stem is depressed and subsequently released by the user to dispense a dosage. Alternative embodiments of the present invention also include mechanisms for pressure filling an aerosol container through such a metering valve.
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Hulse Dale E.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Noland Kenneth
Sell Donald M.
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