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US 2013/0274690 A1Published application
Powder delivery device
AssigneeProfibrix B.V.
InventorsPaul Greenhalgh, Eliane Schutte
Life of this patent
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Abstract
Provided is a device for the dispensing of powders of the type in which a generated gas flow entrains the powder to be dispensed and carries the powder from the device via a barrel. The barrel has a bore including a main portion with a continuous internal surface, and is characterized in that the length of the main portion is at least fifteen times its maximum internal diameter; and/or the internal bore of the main portion is tapered; and/or the barrel has an outwardly flared outlet portion.
Claims27
A device for the dispensing of powder comprising:
- a barrel having a bore including a main portion with a continuous internal surface through which a generated gas flow entrains the powder to be dispensed, wherein:
- a length of the main portion is at least fifteen times a maximum internal diameter of the bore;
- and
- the barrel has an outwardly flared outlet portion.
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Dependencies are inferred from the claim text.