Manufacture of metered dose valve components
OwnerMichael B. Sivigny, Peter D. Hodsoninventors
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Abstract
Use of metal powder injection molding for the manufacture of a metal valve component, such as a valve stem or a valve body, of a metered dose dispensing valve for use in a medicinal pressurized metered dose dispenser, such as an inhaler.
Claims34
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A method of manufacturing a metal valve component of a medicinal metered dose dispensing valve for use in a medicinal pressurized metered dose dispenser, said method comprising the steps of
- a) providing an mold for the valve component,
- b) injecting into the mold a feedstock of metal particles and/or metal-containing precursor particles in a binder to provide a green part;
- c) removing binder to provide a brown part;
- and
- e) sintering the brown part.
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A valve component of a medicinal metered dose dispensing valve for use in a medicinal pressurized metered dose dispenser, the valve component made of a grade of stainless steel selected from the group consisting of 316-grade, 316L-grade, 304-grade, 17-4PH-grade, 410-grade and 420-grade stainless steel.
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Dependencies are inferred from the claim text.