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US 7,841,338 B2Granted
Dispensing device
AssigneeBoehringer Ingelheim International GmbH
InventorsStephen Terence Dunne, Herbert Wachtel
Life of this patent
Estimating the term…
Abstract
A dispensing device for dispensing powder as a spray is disclosed. The dispensing device comprises a duct through which the powder is dispensable by gas pressure for de-agglomerating the powder. The duct is angled by at least about 90 degrees at a diversion portion and/or diverted into two opposite directions at a fork portion so that the powder is impacted on to or sheared by a solid surface for powder de-agglomeration.
Claims19
Dispensing device for dispensing powder as a spray including fine powder particles, the dispensing device comprising:
- at least one powder storage chamber, and
- at least one duct through which the powder is dispensable from the at least one powder storage chamber by gas pressure for de-agglomerating the powder,
- wherein the at least one duct is meander or zig-zag shaped along its length while maintaining an essentially constant diameter so that the powder is at least one of impacted on to and sheared by a solid surface for de-agglomeration of the powder.
Dependencies are inferred from the claim text.