Valve for aerosol container
AssigneeSmithKline Beecham Corporation
InventorPeter Colin Weston Burt
Life of this patent
Estimating the term…
Abstract
The invention is directed to a valve for an aerosol container for dispersing a suspension or solution of a medicament in a liquid propellant contained therein. The valve comprises a valve body defining an aperture, a seal mounted at the aperture, and a valve stem having a dispensing passage. The valve stem being slidably moveable through the seal such that in a first position the valve is closed to prevent the medicament and propellant from entering the dispensing passage. The valve stem also being such that in a second position the valve is open to allow the substance to be dispensed through the dispensing passage. The valve stem characterized in that it is constructed from a mouldable plastic and a mouldable lubricant.
Claims35
A valve for use with an aerosol container for dispensing a suspension or solution of a medicament in a liquid propellant contained therein, the valve comprising:
- a valve body defining a metering chamber,
- one or more gaskets suitable for slidingly engaging a valve stem, and the valve stem constructed from a mouldable plastic and one or more flurocarbon polymers, having a dispensing passage, and in communication with the metering chamber.
A metering device comprising:
- a container in communication with
- a metering chamber,
- a valve stem constructed from a mouldable plastic and one or more flurocarbon polymers, the stem having a transfer passage adapted to dispense a quantity of an aerosol drug formulation comprising a medicament and a propellant, and,
- a valve body defining the metering chamber,
- one or more gaskets adapted to slidingly engage the valve stem.
A valve stem comprising:
- a mouldable plastic, and
- one or more mouldable flurocarbon polymers.
A valve for use with an aerosol container for dispensing a suspension or solution of a medicament in a liquid propellant contained therein, the valve comprising:
- a valve body defining an aperture, and
- a valve stem constructed from one or more mouldable plastics and one or more flurocarbon polymers and having a dispensing passage, the valve stem adapted to slidingly engage
- a means for sealing the valve stem from the valve body.
Dependencies are inferred from the claim text.