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US 6,644,306 B1Granted
Valve for aerosol container
AssigneeSmithKline Beecham Corporation
InventorsMichael Thomas Riebe, Mark Douglas Schulze
Life of this patent
Estimating the term…
Abstract
The invention provides a valve for an aerosol container suitable for use in dispensing a quantity of the contents thereof. The valve components comprise a fluorinated polymer and/or a fluorinated coating which have been found to reduce drug deposition in the valve.
Claims40
A valve for an aerosol container, comprising:
- a valve body including a metering chamber having a first internal surface and a transfer passage in liquid communication with said metering chamber;
- and
- an actuator having a dispensing passage in liquid communication with said metering chamber, said dispensing passage having a second internal surface, wherein at least said valve body comprises a mixture of a first fluorinated polymer and a non-fluoridated polymer and said first internal surface includes a plasma coated second fluorinated polymer.
A metering valve made by a process comprising the steps of:
- providing a valve body comprising a mixture of a fluorinated polymer and a non-fluorinated polymer, said valve body including a metering chamber having a first interior surface, and a transfer passage in liquid communication with the metering chamber;
- providing an actuator having a dispensing passage in liquid communication with said metering chamber, said dispensing passage having a second internal surface;
- and
- plasma reacting a suitable fluorocarbon monomer on at least said interior surface of said metering chamber.
1 more element
Dependencies are inferred from the claim text.